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silverbullet
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Moving everything into a single repo and build

pull/3/head
Zef Hemel 2022-03-20 09:56:28 +01:00
parent 4e570191a6
commit 7352c6c612
64 changed files with 11463 additions and 0 deletions
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6
.parcelrc Normal file
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{
"extends": "@parcel/config-default",
"validators": {
"*.{ts,tsx}": ["@parcel/validator-typescript"]
}
}

9
Makefile Normal file
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.PHONY: core
BUILD=../plugbox/bin/plugbox-bundle.mjs
core: core/*
${BUILD} --debug core/core.plug.json ../webapp/src/generated/core.plug.json
watch: *
ls -d core/* | entr make

77
bin/plugbox-bundle.mjs Executable file
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#!/usr/bin/env node
import esbuild from "esbuild";
import { readFile, unlink, writeFile } from "fs/promises";
import path from "path";
import yargs from "yargs";
import { hideBin } from "yargs/helpers";
async function compile(filePath, functionName, debug) {
let outFile = "out.js";
let inFile = filePath;
if (functionName) {
// Generate a new file importing just this one function and exporting it
inFile = "in.js";
await writeFile(
inFile,
`import {${functionName}} from "./${filePath}";
export default ${functionName};`
);
}
// TODO: Figure out how to make source maps work correctly with eval() code
let js = await esbuild.build({
entryPoints: [inFile],
bundle: true,
format: "iife",
globalName: "mod",
platform: "neutral",
sourcemap: false, //sourceMap ? "inline" : false,
minify: !debug,
outfile: outFile,
});
let jsCode = (await readFile(outFile)).toString();
jsCode = jsCode.replace(/^var mod ?= ?/, "");
await unlink(outFile);
if (inFile !== filePath) {
await unlink(inFile);
}
// Strip final ';'
return jsCode.substring(0, jsCode.length - 2);
}
async function bundle(manifestPath, sourceMaps) {
const rootPath = path.dirname(manifestPath);
const manifest = JSON.parse((await readFile(manifestPath)).toString());
for (let [name, def] of Object.entries(manifest.functions)) {
let jsFunctionName = def.functionName,
filePath = path.join(rootPath, def.path);
if (filePath.indexOf(":") !== -1) {
[filePath, jsFunctionName] = filePath.split(":");
}
def.code = await compile(filePath, jsFunctionName, sourceMaps);
delete def.path;
}
return manifest;
}
async function run() {
let args = await yargs(hideBin(process.argv))
.option("debug", {
type: "boolean",
})
.parse();
let generatedManifest = await bundle(args._[0], !!args.debug);
await writeFile(args._[1], JSON.stringify(generatedManifest, null, 2));
}
run().catch((e) => {
console.error(e);
process.exit(1);
});

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jest.config.js Normal file
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export default {
extensionsToTreatAsEsm: [".ts"],
preset: "ts-jest/presets/default-esm", // or other ESM presets
globals: {
"ts-jest": {
useESM: true,
},
},
moduleNameMapper: {
"^(\\.{1,2}/.*)\\.js$": "$1",
},
};

94
package.json Normal file
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{
"name": "silverbullet",
"version": "0.0.1",
"license": "MIT",
"resolutions": {
"@lezer/common": "https://github.com/zefhemel/common.git#046c880d1fcab713cadad327a5b7d8bb5de6522c"
},
"scripts": {
"watch": "parcel watch",
"build": "parcel build",
"clean": "rm -rf dist",
"server": "nodemon dist/server/server.js pages"
},
"targets": {
"webapp": {
"source": [
"webapp/index.html"
],
"context": "browser"
},
"server": {
"source": [
"server/server.ts"
],
"outputFormat": "commonjs",
"isLibrary": true,
"context": "node"
}
},
"dependencies": {
"@codemirror/basic-setup": "^0.19.1",
"@codemirror/collab": "^0.19.0",
"@codemirror/commands": "^0.19.8",
"@codemirror/lang-markdown": "^0.19.6",
"@codemirror/state": "^0.19.7",
"@codemirror/view": "^0.19.42",
"@fortawesome/fontawesome-svg-core": "1.3.0",
"@fortawesome/free-solid-svg-icons": "6.0.0",
"@fortawesome/react-fontawesome": "0.1.17",
"@parcel/optimizer-data-url": "2.3.2",
"@parcel/service-worker": "^2.3.2",
"@parcel/transformer-inline-string": "2.3.2",
"@types/cors": "^2.8.12",
"@types/express": "^4.17.13",
"dexie": "^3.2.1",
"idb": "^7.0.0",
"jest": "^27.5.1",
"lodash": "^4.17.21",
"nodemon": "^2.0.15",
"parcel": "^2.3.2",
"socket.io-client": "^4.4.1",
"ts-jest": "^27.1.3",
"express": "^4.17.3",
"vm2": "^3.9.9",
"yargs": "^17.3.1",
"better-sqlite3": "^7.5.0",
"body-parser": "^1.19.2",
"browserify-zlib": "^0.2.0",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"buffer": "^6.0.3",
"knex": "^1.0.4",
"cors": "^2.8.5",
"socket.io": "^4.4.1",
"socket.io-client": "^4.4.1"
},
"devDependencies": {
"@parcel/packager-raw-url": "2.3.2",
"@parcel/service-worker": "^2.3.2",
"@parcel/transformer-inline-string": "2.3.2",
"@parcel/transformer-sass": "2.3.2",
"@parcel/transformer-webmanifest": "2.3.2",
"@parcel/validator-typescript": "^2.3.2",
"@types/events": "^3.0.0",
"@types/jest": "^27.4.1",
"@types/node": "^17.0.21",
"@types/react": "^17.0.39",
"@types/react-dom": "^17.0.11",
"@vscode/sqlite3": "^5.0.7",
"assert": "^2.0.0",
"events": "^3.3.0",
"parcel": "^2.3.2",
"prettier": "^2.5.1",
"querystring-es3": "^0.2.1",
"stream-browserify": "^3.0.0",
"stream-http": "^3.2.0",
"timers-browserify": "^2.0.12",
"tty-browserify": "^0.0.1",
"typescript": "^4.6.2",
"uglify-js": "^3.15.1",
"url": "^0.11.0",
"util": "^0.12.4"
}
}

8
plugbox/iframe_sandbox.html Normal file
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<html>
<body>
<script type="module">
// Sup yo!
import "./sandbox_worker";
</script>
</body>
</html>

43
plugbox/iframe_sandbox.ts Normal file
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import { ControllerMessage, WorkerLike, WorkerMessage } from "./types";
import { Sandbox, System } from "./runtime";
import { safeRun } from "./util";
// @ts-ignore
import sandboxHtml from "bundle-text:./iframe_sandbox.html";
class IFrameWrapper implements WorkerLike {
private iframe: HTMLIFrameElement;
onMessage?: (message: any) => Promise<void>;
constructor() {
const iframe = document.createElement("iframe", {});
this.iframe = iframe;
iframe.style.display = "none";
// Let's lock this down significantly
iframe.setAttribute("sandbox", "allow-scripts");
iframe.srcdoc = sandboxHtml;
window.addEventListener("message", (evt: any) => {
if (evt.source !== iframe.contentWindow) {
return;
}
let data = evt.data;
if (!data) return;
safeRun(async () => {
await this.onMessage!(data);
});
});
document.body.appendChild(iframe);
}
postMessage(message: any): void {
this.iframe.contentWindow!.postMessage(message, "*");
}
terminate() {
return this.iframe.remove();
}
}
export function createSandbox(system: System<any>) {
return new Sandbox(system, new IFrameWrapper());
}

45
plugbox/node_sandbox.ts Normal file
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import { ControllerMessage, WorkerLike, WorkerMessage } from "./types";
import { System, Sandbox } from "./runtime";
import { Worker } from "worker_threads";
import * as fs from "fs";
import { safeRun } from "./util";
// @ts-ignore
import workerCode from "bundle-text:./node_worker.ts"
// ParcelJS will simply inline this into the bundle.
// const workerCode = fs.readFileSync(__dirname + "/node_worker.ts", "utf-8");
class NodeWorkerWrapper implements WorkerLike {
onMessage?: (message: any) => Promise<void>;
private worker: Worker;
constructor(worker: Worker) {
this.worker = worker;
worker.on("message", (message: any) => {
safeRun(async () => {
await this.onMessage!(message);
});
});
}
postMessage(message: any): void {
this.worker.postMessage(message);
}
terminate(): void {
this.worker.terminate();
}
}
export function createSandbox(system: System<any>) {
return new Sandbox(
system,
new NodeWorkerWrapper(
new Worker(workerCode, {
eval: true,
})
)
);
}

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const { VM, VMScript } = require("vm2");
const { parentPort } = require("worker_threads");
let loadedFunctions = new Map<string, Function>();
let pendingRequests = new Map<
number,
{
resolve: (result: unknown) => void;
reject: (e: any) => void;
}
>();
let vm = new VM({
sandbox: {
console: console,
self: {
syscall: (reqId : number, name : string, args: any[]) => {
return new Promise((resolve, reject) => {
pendingRequests.set(reqId, { resolve, reject });
parentPort.postMessage({
type: "syscall",
id: reqId,
name,
// TODO: Figure out why this is necessary (to avoide a CloneError)
args: JSON.parse(JSON.stringify(args)),
});
});
},
},
},
});
function wrapScript(code : string) {
return `(${code})["default"]`;
}
function safeRun(fn : any) {
fn().catch((e : any) => {
console.error(e);
});
}
parentPort.on("message", (data : any) => {
safeRun(async () => {
switch (data.type) {
case "load":
console.log("Booting", data.name);
loadedFunctions.set(data.name, new VMScript(wrapScript(data.code)));
parentPort.postMessage({
type: "inited",
name: data.name,
});
break;
case "invoke":
let fn = loadedFunctions.get(data.name);
if (!fn) {
throw new Error(`Function not loaded: ${data.name}`);
}
try {
let r = vm.run(fn);
let result = await Promise.resolve(r(...data.args));
parentPort.postMessage({
type: "result",
id: data.id,
result: result,
});
} catch (e : any) {
console.log("ERROR", e);
parentPort.postMessage({
type: "result",
id: data.id,
error: e.message,
});
}
break;
case "syscall-response":
let syscallId = data.id;
const lookup = pendingRequests.get(syscallId);
if (!lookup) {
console.log(
"Current outstanding requests",
pendingRequests,
"looking up",
syscallId
);
throw Error("Invalid request id");
}
pendingRequests.delete(syscallId);
if (data.error) {
lookup.reject(new Error(data.error));
} else {
lookup.resolve(data.result);
}
break;
}
});
});

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import { createSandbox } from "./node_sandbox";
import { System } from "./runtime";
import { test, expect } from "@jest/globals";
test("Run a Node sandbox", async () => {
let system = new System();
system.registerSyscalls({
addNumbers: (a, b) => {
return a + b;
},
failingSyscall: () => {
throw new Error("#fail");
},
});
let plug = await system.load(
"test",
{
functions: {
addTen: {
code: `(() => {
return {
default: (n) => {
return n + 10;
}
};
})()`,
},
addNumbersSyscall: {
code: `(() => {
return {
default: async (a, b) => {
return await self.syscall(1, "addNumbers", [a, b]);
}
};
})()`,
},
errorOut: {
code: `(() => {
return {
default: () => {
throw Error("BOOM");
}
};
})()`,
},
errorOutSys: {
code: `(() => {
return {
default: async () => {
await self.syscall(2, "failingSyscall", []);
}
};
})()`,
},
},
hooks: {
events: {},
},
},
createSandbox(system)
);
expect(await plug.invoke("addTen", [10])).toBe(20);
for (let i = 0; i < 100; i++) {
expect(await plug.invoke("addNumbersSyscall", [10, i])).toBe(10 + i);
}
try {
await plug.invoke("errorOut", []);
expect(true).toBe(false);
} catch (e: any) {
expect(e.message).toBe("BOOM");
}
try {
await plug.invoke("errorOutSys", []);
expect(true).toBe(false);
} catch (e: any) {
expect(e.message).toBe("#fail");
}
await system.stop();
});

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import {
ControllerMessage,
Manifest,
WorkerLike,
WorkerMessage,
} from "./types";
interface SysCallMapping {
[key: string]: (...args: any) => Promise<any> | any;
}
export class Sandbox {
protected worker: WorkerLike;
protected reqId = 0;
protected outstandingInits = new Map<string, () => void>();
protected outstandingInvocations = new Map<
number,
{ resolve: (result: any) => void; reject: (e: any) => void }
>();
protected loadedFunctions = new Set<string>();
protected system: System<any>;
constructor(system: System<any>, worker: WorkerLike) {
worker.onMessage = this.onMessage.bind(this);
this.worker = worker;
this.system = system;
}
isLoaded(name: string) {
return this.loadedFunctions.has(name);
}
async load(name: string, code: string): Promise<void> {
this.worker.postMessage({
type: "load",
name: name,
code: code,
} as WorkerMessage);
return new Promise((resolve) => {
this.loadedFunctions.add(name);
this.outstandingInits.set(name, resolve);
});
}
async onMessage(data: ControllerMessage) {
switch (data.type) {
case "inited":
let initCb = this.outstandingInits.get(data.name!);
initCb && initCb();
this.outstandingInits.delete(data.name!);
break;
case "syscall":
try {
let result = await this.system.syscall(data.name!, data.args!);
this.worker.postMessage({
type: "syscall-response",
id: data.id,
result: result,
} as WorkerMessage);
} catch (e: any) {
this.worker.postMessage({
type: "syscall-response",
id: data.id,
error: e.message,
} as WorkerMessage);
}
break;
case "result":
let resultCbs = this.outstandingInvocations.get(data.id!);
this.outstandingInvocations.delete(data.id!);
if (data.error) {
resultCbs && resultCbs.reject(new Error(data.error));
} else {
resultCbs && resultCbs.resolve(data.result);
}
break;
default:
console.error("Unknown message type", data);
}
}
async invoke(name: string, args: any[]): Promise<any> {
this.reqId++;
this.worker.postMessage({
type: "invoke",
id: this.reqId,
name,
args,
});
return new Promise((resolve, reject) => {
this.outstandingInvocations.set(this.reqId, { resolve, reject });
});
}
stop() {
this.worker.terminate();
}
}
export class Plug<HookT> {
system: System<HookT>;
sandbox: Sandbox;
public manifest?: Manifest<HookT>;
constructor(system: System<HookT>, name: string, sandbox: Sandbox) {
this.system = system;
this.sandbox = sandbox;
}
async load(manifest: Manifest<HookT>) {
this.manifest = manifest;
await this.dispatchEvent("load");
}
async invoke(name: string, args: Array<any>): Promise<any> {
if (!this.sandbox.isLoaded(name)) {
const funDef = this.manifest!.functions[name];
if (!funDef) {
throw new Error(`Function ${name} not found in manifest`);
}
await this.sandbox.load(name, this.manifest!.functions[name].code!);
}
return await this.sandbox.invoke(name, args);
}
async dispatchEvent(name: string, data?: any): Promise<any[]> {
let functionsToSpawn = this.manifest!.hooks.events[name];
if (functionsToSpawn) {
return await Promise.all(
functionsToSpawn.map(
async (functionToSpawn: string) =>
await this.invoke(functionToSpawn, [data])
)
);
} else {
return [];
}
}
async stop() {
this.sandbox.stop();
}
}
export class System<HookT> {
protected plugs = new Map<string, Plug<HookT>>();
registeredSyscalls: SysCallMapping = {};
registerSyscalls(...registrationObjects: SysCallMapping[]) {
for (const registrationObject of registrationObjects) {
for (let p in registrationObject) {
this.registeredSyscalls[p] = registrationObject[p];
}
}
}
async syscall(name: string, args: Array<any>): Promise<any> {
const callback = this.registeredSyscalls[name];
if (!name) {
throw Error(`Unregistered syscall ${name}`);
}
if (!callback) {
throw Error(`Registered but not implemented syscall ${name}`);
}
return Promise.resolve(callback(...args));
}
async load(
name: string,
manifest: Manifest<HookT>,
sandbox: Sandbox
): Promise<Plug<HookT>> {
const plug = new Plug(this, name, sandbox);
await plug.load(manifest);
this.plugs.set(name, plug);
return plug;
}
async dispatchEvent(name: string, data?: any): Promise<any[]> {
let promises = [];
for (let plug of this.plugs.values()) {
promises.push(plug.dispatchEvent(name, data));
}
return await Promise.all(promises);
}
async stop(): Promise<void[]> {
return Promise.all(
Array.from(this.plugs.values()).map((plug) => plug.stop())
);
}
}

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import { ControllerMessage, WorkerMessage, WorkerMessageType } from "./types";
import { safeRun } from "./util";
let loadedFunctions = new Map<string, Function>();
let pendingRequests = new Map<
number,
{
resolve: (result: unknown) => void;
reject: (e: any) => void;
}
>();
declare global {
function syscall(id: number, name: string, args: any[]): Promise<any>;
}
let postMessage = self.postMessage.bind(self);
if (window.parent !== window) {
console.log("running in an iframe");
postMessage = window.parent.postMessage.bind(window.parent);
// postMessage({ type: "test" }, "*");
}
self.syscall = async (id: number, name: string, args: any[]) => {
return await new Promise((resolve, reject) => {
pendingRequests.set(id, { resolve, reject });
postMessage(
{
type: "syscall",
id,
name,
args,
},
"*"
);
});
};
function wrapScript(code: string): string {
return `const fn = ${code};
return fn["default"].apply(null, arguments);`;
}
self.addEventListener("message", (event: { data: WorkerMessage }) => {
// console.log("Got a message", event.data);
safeRun(async () => {
let messageEvent = event;
let data = messageEvent.data;
switch (data.type) {
case "load":
console.log("Booting", data.name);
loadedFunctions.set(data.name!, new Function(wrapScript(data.code!)));
postMessage(
{
type: "inited",
name: data.name,
} as ControllerMessage,
"*"
);
break;
case "invoke":
let fn = loadedFunctions.get(data.name!);
if (!fn) {
throw new Error(`Function not loaded: ${data.name}`);
}
try {
let result = await Promise.resolve(fn(...(data.args || [])));
postMessage(
{
type: "result",
id: data.id,
result: result,
} as ControllerMessage,
"*"
);
} catch (e: any) {
postMessage(
{
type: "result",
id: data.id,
error: e.message,
} as ControllerMessage,
"*"
);
throw e;
}
break;
case "syscall-response":
let syscallId = data.id!;
const lookup = pendingRequests.get(syscallId);
if (!lookup) {
console.log(
"Current outstanding requests",
pendingRequests,
"looking up",
syscallId
);
throw Error("Invalid request id");
}
pendingRequests.delete(syscallId);
if (data.error) {
lookup.reject(new Error(data.error));
} else {
lookup.resolve(data.result);
}
break;
}
});
});

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export type EventHook = {
events: { [key: string]: string[] };
};
export type WorkerMessageType = "load" | "invoke" | "syscall-response";
export type WorkerMessage = {
type: WorkerMessageType;
id?: number;
name?: string;
code?: string;
args?: any[];
result?: any;
error?: any;
};
export type ControllerMessageType = "inited" | "result" | "syscall";
export type ControllerMessage = {
type: ControllerMessageType;
id?: number;
name?: string;
args?: any[];
error?: string;
result?: any;
};
export interface Manifest<HookT> {
hooks: HookT & EventHook;
functions: {
[key: string]: FunctionDef;
};
}
export interface FunctionDef {
path?: string;
code?: string;
}
export interface WorkerLike {
onMessage?: (message: any) => Promise<void>;
postMessage(message: any): void;
terminate(): void;
}

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export function safeRun(fn: () => Promise<void>) {
fn().catch((e) => {
// console.error(e);
throw e;
});
}

34
plugbox/webworker_sandbox.ts Normal file
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import { ControllerMessage, WorkerLike, WorkerMessage } from "./types";
import { Sandbox, System } from "./runtime";
import { safeRun } from "./util";
class WebWorkerWrapper implements WorkerLike {
private worker: Worker;
onMessage?: (message: any) => Promise<void>;
constructor(worker: Worker) {
this.worker = worker;
this.worker.addEventListener("message", (evt: any) => {
let data = evt.data;
if (!data) return;
safeRun(async () => {
await this.onMessage!(data);
});
});
}
postMessage(message: any): void {
this.worker.postMessage(message);
}
terminate() {
return this.worker.terminate();
}
}
export function createSandbox(system: System<any>) {
// ParcelJS will build this file into a worker.
let worker = new Worker(new URL("sandbox_worker.ts", import.meta.url), {
type: "module",
});
return new Sandbox(system, new WebWorkerWrapper(worker));
}

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import { test, expect, beforeAll, afterAll, describe } from "@jest/globals";
import { createServer } from "http";
import { io as Client } from "socket.io-client";
import { Server } from "socket.io";
import { SocketServer } from "./api_server";
import * as path from "path";
import * as fs from "fs";
describe("Server test", () => {
let io: Server,
socketServer: SocketServer,
clientSocket: any,
reqId = 0;
const tmpDir = path.join(__dirname, "test");
function wsCall(eventName: string, ...args: any[]): Promise<any> {
return new Promise((resolve, reject) => {
reqId++;
clientSocket.once(`${eventName}Resp${reqId}`, (err: any, result: any) => {
if (err) {
reject(err);
} else {
resolve(result);
}
});
clientSocket.emit(eventName, reqId, ...args);
});
}
beforeAll((done) => {
const httpServer = createServer();
io = new Server(httpServer);
fs.mkdirSync(tmpDir, { recursive: true });
fs.writeFileSync(`${tmpDir}/test.md`, "This is a simple test");
httpServer.listen(async () => {
// @ts-ignore
const port = httpServer.address().port;
// @ts-ignore
clientSocket = new Client(`http://localhost:${port}`);
socketServer = new SocketServer(tmpDir, io);
clientSocket.on("connect", done);
await socketServer.init();
});
});
afterAll(() => {
io.close();
clientSocket.close();
socketServer.close();
fs.rmSync(tmpDir, { recursive: true, force: true });
});
test("List pages", async () => {
let pages = await wsCall("page.listPages");
expect(pages.length).toBe(1);
await wsCall("page.writePage", "test2.md", "This is another test");
let pages2 = await wsCall("page.listPages");
expect(pages2.length).toBe(2);
await wsCall("page.deletePage", "test2.md");
let pages3 = await wsCall("page.listPages");
expect(pages3.length).toBe(1);
});
test("Index operations", async () => {
await wsCall("index.clearPageIndexForPage", "test");
await wsCall("index.set", "test", "testkey", "value");
expect(await wsCall("index.get", "test", "testkey")).toBe("value");
await wsCall("index.delete", "test", "testkey");
expect(await wsCall("index.get", "test", "testkey")).toBe(null);
await wsCall("index.set", "test", "unrelated", 10);
await wsCall("index.set", "test", "unrelated", 12);
await wsCall("index.set", "test2", "complicated", {
name: "Bla",
age: 123123,
});
await wsCall("index.set", "test", "complicated", { name: "Bla", age: 100 });
await wsCall("index.set", "test", "complicated2", {
name: "Bla",
age: 101,
});
expect(await wsCall("index.get", "test", "complicated")).toStrictEqual({
name: "Bla",
age: 100,
});
let result = await wsCall("index.scanPrefixForPage", "test", "compli");
expect(result.length).toBe(2);
let result2 = await wsCall("index.scanPrefixGlobal", "compli");
expect(result2.length).toBe(3);
await wsCall("index.deletePrefixForPage", "test", "compli");
let result3 = await wsCall("index.scanPrefixForPage", "test", "compli");
expect(result3.length).toBe(0);
let result4 = await wsCall("index.scanPrefixGlobal", "compli");
expect(result4.length).toBe(1);
});
});

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import { Server, Socket } from "socket.io";
import { Page } from "./types";
import * as path from "path";
import { IndexApi } from "./index_api";
import { PageApi } from "./page_api";
import { System } from "../plugbox/runtime";
import { createSandbox } from "../plugbox/node_sandbox";
import { NuggetHook } from "../webapp/types";
import corePlug from "../webapp/generated/core.plug.json";
import pageIndexSyscalls from "./syscalls/page_index";
export class ClientConnection {
openPages = new Set<string>();
constructor(readonly sock: Socket) {}
}
export interface ApiProvider {
init(): Promise<void>;
api(): Object;
}
export class SocketServer {
private openPages = new Map<string, Page>();
private connectedSockets = new Set<Socket>();
private apis = new Map<string, ApiProvider>();
readonly rootPath: string;
private serverSocket: Server;
system: System<NuggetHook>;
constructor(rootPath: string, serverSocket: Server) {
this.rootPath = path.resolve(rootPath);
this.serverSocket = serverSocket;
this.system = new System<NuggetHook>();
}
async registerApi(name: string, apiProvider: ApiProvider) {
await apiProvider.init();
this.apis.set(name, apiProvider);
}
public async init() {
const indexApi = new IndexApi(this.rootPath);
await this.registerApi("index", indexApi);
this.system.registerSyscalls(pageIndexSyscalls(indexApi.db));
await this.registerApi(
"page",
new PageApi(
this.rootPath,
this.connectedSockets,
this.openPages,
this.system
)
);
let plug = await this.system.load(
"core",
corePlug,
createSandbox(this.system)
);
this.serverSocket.on("connection", (socket) => {
const clientConn = new ClientConnection(socket);
console.log("Connected", socket.id);
this.connectedSockets.add(socket);
socket.on("disconnect", () => {
console.log("Disconnected", socket.id);
clientConn.openPages.forEach(disconnectPageSocket);
this.connectedSockets.delete(socket);
});
socket.on("page.closePage", (pageName: string) => {
console.log("Client closed page", pageName);
disconnectPageSocket(pageName);
clientConn.openPages.delete(pageName);
});
const onCall = (
eventName: string,
cb: (...args: any[]) => Promise<any>
) => {
socket.on(eventName, (reqId: number, ...args) => {
cb(...args)
.then((result) => {
socket.emit(`${eventName}Resp${reqId}`, null, result);
})
.catch((err) => {
socket.emit(`${eventName}Resp${reqId}`, err.message);
});
});
};
const disconnectPageSocket = (pageName: string) => {
let page = this.openPages.get(pageName);
if (page) {
for (let client of page.clientStates) {
if (client.socket === socket) {
(this.apis.get("page")! as PageApi).disconnectClient(
client,
page
);
}
}
}
};
for (let [apiName, apiProvider] of this.apis) {
Object.entries(apiProvider.api()).forEach(([eventName, cb]) => {
onCall(`${apiName}.${eventName}`, (...args: any[]): any => {
// @ts-ignore
return cb(clientConn, ...args);
});
});
}
});
}
close() {
(this.apis.get("index")! as IndexApi).db.destroy();
}
}

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import { readdir, readFile, stat, unlink, writeFile } from "fs/promises";
import * as path from "path";
import { PageMeta } from "./types";
export class DiskStorage {
rootPath: string;
constructor(rootPath: string) {
this.rootPath = rootPath;
}
async listPages(): Promise<PageMeta[]> {
let fileNames: PageMeta[] = [];
const walkPath = async (dir: string) => {
let files = await readdir(dir);
for (let file of files) {
const fullPath = path.join(dir, file);
let s = await stat(fullPath);
if (s.isDirectory()) {
await walkPath(fullPath);
} else {
if (path.extname(file) === ".md") {
fileNames.push({
name: fullPath.substring(
this.rootPath.length + 1,
fullPath.length - 3
),
lastModified: s.mtime.getTime(),
});
}
}
}
};
await walkPath(this.rootPath);
return fileNames;
}
async readPage(pageName: string): Promise<{ text: string; meta: PageMeta }> {
const localPath = path.join(this.rootPath, pageName + ".md");
try {
const s = await stat(localPath);
return {
text: await readFile(localPath, "utf8"),
meta: {
name: pageName,
lastModified: s.mtime.getTime(),
},
};
} catch (e) {
// console.error("Error while writing page", pageName, e);
throw Error(`Could not read page ${pageName}`);
}
}
async writePage(pageName: string, text: string): Promise<PageMeta> {
let localPath = path.join(this.rootPath, pageName + ".md");
try {
await writeFile(localPath, text);
// console.log(`Wrote to ${localPath}`);
const s = await stat(localPath);
return {
name: pageName,
lastModified: s.mtime.getTime(),
};
} catch (e) {
console.error("Error while writing page", pageName, e);
throw Error(`Could not write ${pageName}`);
}
}
async getPageMeta(pageName: string): Promise<PageMeta> {
let localPath = path.join(this.rootPath, pageName + ".md");
try {
const s = await stat(localPath);
return {
name: pageName,
lastModified: s.mtime.getTime(),
};
} catch (e) {
console.error("Error while getting page meta", pageName, e);
throw Error(`Could not get meta for ${pageName}`);
}
}
async deletePage(pageName: string) {
let localPath = path.join(this.rootPath, pageName + ".md");
await unlink(localPath);
}
}

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import { ApiProvider, ClientConnection } from "./api_server";
import knex, { Knex } from "knex";
import path from "path";
import pageIndexSyscalls from "./syscalls/page_index";
type IndexItem = {
page: string;
key: string;
value: any;
};
export class IndexApi implements ApiProvider {
db: Knex;
constructor(rootPath: string) {
this.db = knex({
client: "better-sqlite3",
connection: {
filename: path.join(rootPath, "data.db"),
},
useNullAsDefault: true,
});
}
async init() {
if (!(await this.db.schema.hasTable("page_index"))) {
await this.db.schema.createTable("page_index", (table) => {
table.string("page");
table.string("key");
table.text("value");
table.primary(["page", "key"]);
});
console.log("Created table page_index");
}
}
api() {
const syscalls = pageIndexSyscalls(this.db);
return {
clearPageIndexForPage: async (
clientConn: ClientConnection,
page: string
) => {
return syscalls["indexer.clearPageIndexForPage"](page);
},
set: async (
clientConn: ClientConnection,
page: string,
key: string,
value: any
) => {
return syscalls["indexer.set"](page, key, value);
},
get: async (clientConn: ClientConnection, page: string, key: string) => {
return syscalls["indexer.get"](page, key);
},
delete: async (
clientConn: ClientConnection,
page: string,
key: string
) => {
return syscalls["indexer.delete"](page, key);
},
scanPrefixForPage: async (
clientConn: ClientConnection,
page: string,
prefix: string
) => {
return syscalls["indexer.scanPrefixForPage"](page, prefix);
},
scanPrefixGlobal: async (
clientConn: ClientConnection,
prefix: string
) => {
return syscalls["indexer.scanPrefixGlobal"](prefix);
},
deletePrefixForPage: async (
clientConn: ClientConnection,
page: string,
prefix: string
) => {
return syscalls["indexer.deletePrefixForPage"](page, prefix);
},
clearPageIndex: async (clientConn: ClientConnection) => {
return syscalls["indexer.clearPageIndex"]();
},
};
}
}

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import { ClientPageState, Page, PageMeta } from "./types";
import { ChangeSet } from "@codemirror/state";
import { Update } from "@codemirror/collab";
import { ApiProvider, ClientConnection } from "./api_server";
import { Socket } from "socket.io";
import { DiskStorage } from "./disk_storage";
import { safeRun } from "./util";
import fs from "fs";
import path from "path";
import { stat } from "fs/promises";
import { Cursor, cursorEffect } from "../webapp/cursorEffect";
import { System } from "../plugbox/runtime";
import { NuggetHook } from "../webapp/types";
export class PageApi implements ApiProvider {
openPages: Map<string, Page>;
pageStore: DiskStorage;
rootPath: string;
connectedSockets: Set<Socket>;
private system: System<NuggetHook>;
constructor(
rootPath: string,
connectedSockets: Set<Socket>,
openPages: Map<string, Page>,
system: System<NuggetHook>
) {
this.pageStore = new DiskStorage(rootPath);
this.rootPath = rootPath;
this.openPages = openPages;
this.connectedSockets = connectedSockets;
this.system = system;
}
async init(): Promise<void> {
this.fileWatcher();
}
broadcastCursors(page: Page) {
page.clientStates.forEach((client) => {
client.socket.emit(
"cursorSnapshot",
page.name,
Object.fromEntries(page.cursors.entries())
);
});
}
flushPageToDisk(name: string, page: Page) {
safeRun(async () => {
let meta = await this.pageStore.writePage(name, page.text.sliceString(0));
console.log(`Wrote page ${name} to disk`);
page.meta = meta;
});
}
disconnectClient(client: ClientPageState, page: Page) {
console.log("Disconnecting client");
page.clientStates.delete(client);
if (page.clientStates.size === 0) {
console.log("No more clients for", page.name, "flushing");
this.flushPageToDisk(page.name, page);
this.openPages.delete(page.name);
} else {
page.cursors.delete(client.socket.id);
this.broadcastCursors(page);
}
}
fileWatcher() {
fs.watch(
this.rootPath,
{
recursive: true,
persistent: false,
},
(eventType, filename) => {
safeRun(async () => {
if (!filename.endsWith(".md")) {
return;
}
let localPath = path.join(this.rootPath, filename);
let pageName = filename.substring(0, filename.length - 3);
// console.log("Edit in", pageName, eventType);
let modifiedTime = 0;
try {
let s = await stat(localPath);
modifiedTime = s.mtime.getTime();
} catch (e) {
// File was deleted
console.log("Deleted", pageName);
for (let socket of this.connectedSockets) {
socket.emit("pageDeleted", pageName);
}
return;
}
const openPage = this.openPages.get(pageName);
if (openPage) {
if (openPage.meta.lastModified < modifiedTime) {
console.log("Page changed on disk outside of editor, reloading");
this.openPages.delete(pageName);
const meta = {
name: pageName,
lastModified: modifiedTime,
} as PageMeta;
for (let client of openPage.clientStates) {
client.socket.emit("pageChanged", meta);
}
}
}
if (eventType === "rename") {
// This most likely means a new file was created, let's push new file listings to all connected sockets
console.log(
"New file created, broadcasting to all connected sockets",
pageName
);
for (let socket of this.connectedSockets) {
socket.emit("pageCreated", {
name: pageName,
lastModified: modifiedTime,
} as PageMeta);
}
}
});
}
);
}
api() {
return {
openPage: async (clientConn: ClientConnection, pageName: string) => {
let page = this.openPages.get(pageName);
if (!page) {
try {
let { text, meta } = await this.pageStore.readPage(pageName);
page = new Page(pageName, text, meta);
} catch (e) {
console.log("Creating new page", pageName);
page = new Page(pageName, "", { name: pageName, lastModified: 0 });
}
this.openPages.set(pageName, page);
}
page.clientStates.add(
new ClientPageState(clientConn.sock, page.version)
);
clientConn.openPages.add(pageName);
console.log("Opened page", pageName);
this.broadcastCursors(page);
return page.toJSON();
},
pushUpdates: async (
clientConn: ClientConnection,
pageName: string,
version: number,
updates: any[]
): Promise<boolean> => {
let page = this.openPages.get(pageName);
if (!page) {
console.error(
"Received updates for not open page",
pageName,
this.openPages.keys()
);
return false;
}
if (version !== page.version) {
console.error("Invalid version", version, page.version);
return false;
} else {
console.log("Applying", updates.length, "updates to", pageName);
let transformedUpdates = [];
let textChanged = false;
for (let update of updates) {
let changes = ChangeSet.fromJSON(update.changes);
let transformedUpdate = {
changes,
clientID: update.clientID,
effects: update.cursors?.map((c: Cursor) => {
page!.cursors.set(c.userId, c);
return cursorEffect.of(c);
}),
};
page.updates.push(transformedUpdate);
transformedUpdates.push(transformedUpdate);
let oldText = page.text;
page.text = changes.apply(page.text);
if (oldText !== page.text) {
textChanged = true;
}
}
console.log(
"New version",
page.version,
"Updates buffered:",
page.updates.length
);
if (textChanged) {
// Throttle
if (!page.saveTimer) {
page.saveTimer = setTimeout(() => {
if (page) {
console.log("Indexing", pageName);
this.system.dispatchEvent("page:index", {
name: pageName,
text: page.text.sliceString(0),
});
this.flushPageToDisk(pageName, page);
page.saveTimer = undefined;
}
}, 1000);
}
}
while (page.pending.length) {
page.pending.pop()!(transformedUpdates);
}
return true;
}
},
pullUpdates: async (
clientConn: ClientConnection,
pageName: string,
version: number
): Promise<Update[]> => {
let page = this.openPages.get(pageName);
// console.log("Pulling updates for", pageName);
if (!page) {
console.error("Fetching updates for not open page");
return [];
}
// TODO: Optimize this
let oldestVersion = Infinity;
page.clientStates.forEach((client) => {
oldestVersion = Math.min(client.version, oldestVersion);
if (client.socket === clientConn.sock) {
client.version = version;
}
});
page.flushUpdates(oldestVersion);
if (version < page.version) {
return page.updatesSince(version);
} else {
return new Promise((resolve) => {
page!.pending.push(resolve);
});
}
},
readPage: async (
clientConn: ClientConnection,
pageName: string
): Promise<{ text: string; meta: PageMeta }> => {
let page = this.openPages.get(pageName);
if (page) {
console.log("Serving page from memory", pageName);
return {
text: page.text.sliceString(0),
meta: page.meta,
};
} else {
return this.pageStore.readPage(pageName);
}
},
writePage: async (
clientConn: ClientConnection,
pageName: string,
text: string
) => {
let page = this.openPages.get(pageName);
if (page) {
for (let client of page.clientStates) {
client.socket.emit("reloadPage", pageName);
}
this.openPages.delete(pageName);
}
return this.pageStore.writePage(pageName, text);
},
deletePage: async (clientConn: ClientConnection, pageName: string) => {
this.openPages.delete(pageName);
clientConn.openPages.delete(pageName);
// Cascading of this to all connected clients will be handled by file watcher
return this.pageStore.deletePage(pageName);
},
listPages: async (clientConn: ClientConnection): Promise<PageMeta[]> => {
return this.pageStore.listPages();
},
getPageMeta: async (
clientConn: ClientConnection,
pageName: string
): Promise<PageMeta> => {
let page = this.openPages.get(pageName);
if (page) {
return page.meta;
}
return this.pageStore.getPageMeta(pageName);
},
};
}
}

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import express from "express";
import { readFile } from "fs/promises";
import http from "http";
import { Server } from "socket.io";
import { SocketServer } from "./api_server";
import yargs from "yargs";
import { hideBin } from "yargs/helpers";
let args = yargs(hideBin(process.argv))
.option("debug", {
type: "boolean",
})
.option("port", {
type: "number",
default: 3000,
})
.parse();
const app = express();
const server = http.createServer(app);
const io = new Server(server, {
cors: {
methods: "GET,HEAD,PUT,OPTIONS,POST,DELETE",
preflightContinue: true,
},
});
const port = args.port;
const distDir = `${__dirname}/../webapp`;
app.use("/", express.static(distDir));
let socketServer = new SocketServer(args._[0] as string, io);
socketServer.init();
// Fallback, serve index.html
let cachedIndex: string | undefined = undefined;
app.get("/*", async (req, res) => {
if (!cachedIndex) {
cachedIndex = await readFile(`${distDir}/index.html`, "utf8");
}
res.status(200).header("Content-Type", "text/html").send(cachedIndex);
});
server.listen(port, () => {
console.log(`Server listening on port ${port}`);
});

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import { Knex } from "knex";
type IndexItem = {
page: string;
key: string;
value: any;
};
export type KV = {
key: string;
value: any;
};
export default function (db: Knex) {
const apiObj = {
"indexer.clearPageIndexForPage": async (page: string) => {
await db<IndexItem>("page_index").where({ page }).del();
},
"indexer.set": async (page: string, key: string, value: any) => {
let changed = await db<IndexItem>("page_index")
.where({ page, key })
.update("value", JSON.stringify(value));
if (changed === 0) {
await db<IndexItem>("page_index").insert({
page,
key,
value: JSON.stringify(value),
});
}
},
"indexer.batchSet": async (page: string, kvs: KV[]) => {
for (let { key, value } of kvs) {
await apiObj["indexer.set"](page, key, value);
}
},
"indexer.get": async (page: string, key: string) => {
let result = await db<IndexItem>("page_index")
.where({ page, key })
.select("value");
if (result.length) {
return JSON.parse(result[0].value);
} else {
return null;
}
},
"indexer.delete": async (page: string, key: string) => {
await db<IndexItem>("page_index").where({ page, key }).del();
},
"indexer.scanPrefixForPage": async (page: string, prefix: string) => {
return (
await db<IndexItem>("page_index")
.where({ page })
.andWhereLike("key", `${prefix}%`)
.select("page", "key", "value")
).map(({ page, key, value }) => ({
page,
key,
value: JSON.parse(value),
}));
},
"indexer.scanPrefixGlobal": async (prefix: string) => {
return (
await db<IndexItem>("page_index")
.andWhereLike("key", `${prefix}%`)
.select("page", "key", "value")
).map(({ page, key, value }) => ({
page,
key,
value: JSON.parse(value),
}));
},
"indexer.deletePrefixForPage": async (page: string, prefix: string) => {
return db<IndexItem>("page_index")
.where({ page })
.andWhereLike("key", `${prefix}%`)
.del();
},
"indexer.clearPageIndex": async () => {
return db<IndexItem>("page_index").del();
},
};
return apiObj;
}

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import { Update } from "@codemirror/collab";
import { Text } from "@codemirror/state";
import { Socket } from "socket.io";
import { Cursor } from "../webapp/cursorEffect";
export class ClientPageState {
constructor(public socket: Socket, public version: number) {}
}
export type PageMeta = {
name: string;
lastModified: number;
version?: number;
};
export class Page {
versionOffset = 0;
updates: Update[] = [];
cursors = new Map<string, Cursor>();
clientStates = new Set<ClientPageState>();
pending: ((value: any) => void)[] = [];
text: Text;
meta: PageMeta;
saveTimer: NodeJS.Timeout | undefined;
name: string;
constructor(name: string, text: string, meta: PageMeta) {
this.name = name;
this.text = Text.of(text.split("\n"));
this.meta = meta;
}
updatesSince(version: number): Update[] {
return this.updates.slice(version - this.versionOffset);
}
get version(): number {
return this.updates.length + this.versionOffset;
}
flushUpdates(version: number) {
if (this.versionOffset > version) {
throw Error("This should never happen");
}
if (this.versionOffset === version) {
return;
}
this.updates = this.updates.slice(version - this.versionOffset);
this.versionOffset = version;
// console.log("Flushed updates, now got", this.updates.length, "updates");
}
toJSON() {
return {
text: this.text,
version: this.version,
cursors: Object.fromEntries(this.cursors.entries()),
};
}
}

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export function safeRun(fn: () => Promise<void>) {
fn().catch((e) => {
console.error(e);
});
}

22
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export type AppEvent =
| "app:ready"
| "page:save"
| "page:click"
| "page:index"
| "editor:complete";
export type ClickEvent = {
pos: number;
metaKey: boolean;
ctrlKey: boolean;
altKey: boolean;
};
export type IndexEvent = {
name: string;
text: string;
};
export interface AppEventDispatcher {
dispatchAppEvent(name: AppEvent, data?: any): Promise<any[]>;
}

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import { Editor } from "./editor";
import { Space } from "./space";
import { safeRun } from "./util";
import { io } from "socket.io-client";
let socket = io(`http://${location.hostname}:3000`);
let editor = new Editor(new Space(socket), document.getElementById("root")!);
safeRun(async () => {
await editor.init();
});
// @ts-ignore
window.editor = editor;
navigator.serviceWorker
.register(new URL("service_worker.ts", import.meta.url), { type: "module" })
.then((r) => {
console.log("Service worker registered", r);
});

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import {
collab,
getSyncedVersion,
receiveUpdates,
sendableUpdates,
Update,
} from "@codemirror/collab";
import { RangeSetBuilder } from "@codemirror/rangeset";
import { Text, Transaction } from "@codemirror/state";
import {
Decoration,
DecorationSet,
EditorView,
ViewPlugin,
ViewUpdate,
WidgetType,
} from "@codemirror/view";
import { throttle } from "./util";
import { Cursor, cursorEffect } from "./cursorEffect";
import { EventEmitter } from "./event";
const throttleInterval = 250;
export class CollabDocument {
text: Text;
version: number;
cursors: Map<string, Cursor>;
constructor(text: Text, version: number, cursors: Map<string, Cursor>) {
this.text = text;
this.version = version;
this.cursors = cursors;
}
}
class CursorWidget extends WidgetType {
userId: string;
color: string;
constructor(userId: string, color: string) {
super();
this.userId = userId;
this.color = color;
}
eq(other: CursorWidget) {
return other.userId == this.userId;
}
toDOM() {
let el = document.createElement("span");
el.className = "other-cursor";
el.style.backgroundColor = this.color;
// let nameSpanContainer = document.createElement("span");
// nameSpanContainer.className = "cursor-label-container";
// let nameSpanLabel = document.createElement("label");
// nameSpanLabel.className = "cursor-label";
// nameSpanLabel.textContent = this.userId;
// nameSpanContainer.appendChild(nameSpanLabel);
// el.appendChild(nameSpanContainer);
return el;
}
}
export type CollabEvents = {
cursorSnapshot: (pageName: string, cursors: Map<string, Cursor>) => void;
};
export function collabExtension(
pageName: string,
clientID: string,
doc: CollabDocument,
collabEmitter: EventEmitter<CollabEvents>,
callbacks: {
pushUpdates: (
pageName: string,
version: number,
updates: readonly (Update & { origin: Transaction })[]
) => Promise<boolean>;
pullUpdates: (
pageName: string,
version: number
) => Promise<readonly Update[]>;
reload: () => void;
}
) {
let plugin = ViewPlugin.fromClass(
class {
private pushing = false;
private done = false;
private failedPushes = 0;
private cursorPositions: Map<string, Cursor> = doc.cursors;
decorations: DecorationSet;
throttledPush = throttle(() => this.push(), throttleInterval);
eventHandlers: Partial<CollabEvents> = {
cursorSnapshot: (pageName, cursors) => {
console.log("Received new cursor snapshot", cursors);
this.cursorPositions = new Map(Object.entries(cursors));
},
};
buildDecorations(view: EditorView) {
let builder = new RangeSetBuilder<Decoration>();
let list = [];
for (let [userId, def] of this.cursorPositions) {
if (userId == clientID) {
continue;
}
list.push({
pos: def.pos,
widget: Decoration.widget({
widget: new CursorWidget(userId, def.color),
side: 1,
}),
});
}
list
.sort((a, b) => a.pos - b.pos)
.forEach((r) => {
builder.add(r.pos, r.pos, r.widget);
});
return builder.finish();
}
constructor(private view: EditorView) {
if (pageName) {
this.pull();
}
this.decorations = this.buildDecorations(view);
collabEmitter.on(this.eventHandlers);
}
update(update: ViewUpdate) {
if (update.selectionSet) {
let pos = update.state.selection.main.head;
// if (pos === 0) {
// console.error("Warning: position reset? at 0");
// console.trace();
// }
setTimeout(() => {
update.view.dispatch({
effects: [
cursorEffect.of({ pos: pos, userId: clientID, color: "red" }),
],
});
});
}
let foundCursorMoves = new Set<string>();
for (let tx of update.transactions) {
let cursorMove = tx.effects.find((e) => e.is(cursorEffect));
if (cursorMove) {
foundCursorMoves.add(cursorMove.value.userId);
}
}
// Update cursors
for (let cursor of this.cursorPositions.values()) {
if (foundCursorMoves.has(cursor.userId)) {
// Already got a cursor update for this one, no need to manually map
continue;
}
update.transactions.forEach((tx) => {
cursor.pos = tx.changes.mapPos(cursor.pos);
});
}
this.decorations = this.buildDecorations(update.view);
if (update.docChanged || foundCursorMoves.size > 0) {
this.throttledPush();
}
}
async push() {
let updates = sendableUpdates(this.view.state);
// TODO: compose multiple updates into one
if (this.pushing || !updates.length) return;
this.pushing = true;
let version = getSyncedVersion(this.view.state);
console.log("Updates", updates, "to apply to version", version);
let success = await callbacks.pushUpdates(pageName, version, updates);
this.pushing = false;
if (!success && !this.done) {
this.failedPushes++;
if (this.failedPushes > 10) {
// Not sure if 10 is a good number, but YOLO
console.log("10 pushes failed, reloading");
callbacks.reload();
return this.destroy();
}
console.log(
`Push for page ${pageName} failed temporarily, but will try again`
);
} else {
this.failedPushes = 0;
}
// Regardless of whether the push failed or new updates came in
// while it was running, try again if there's updates remaining
if (!this.done && sendableUpdates(this.view.state).length) {
// setTimeout(() => this.push(), 100);
this.throttledPush();
}
}
async pull() {
while (!this.done) {
let version = getSyncedVersion(this.view.state);
let updates = await callbacks.pullUpdates(pageName, version);
let d = receiveUpdates(this.view.state, updates);
// Pull out cursor updates and update local state
for (let update of updates) {
if (update.effects) {
for (let effect of update.effects) {
if (effect.is(cursorEffect)) {
this.cursorPositions.set(effect.value.userId, {
userId: effect.value.userId,
pos: effect.value.pos,
color: effect.value.color,
});
}
}
}
}
this.view.dispatch(d);
}
}
destroy() {
this.done = true;
collabEmitter.off(this.eventHandlers);
}
},
{
decorations: (v) => v.decorations,
}
);
return [
collab({
startVersion: doc.version,
clientID,
sharedEffects: (tr) => {
return tr.effects.filter((e) => e.is(cursorEffect));
},
}),
plugin,
];
}

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import { EditorSelection, StateCommand, Transaction } from "@codemirror/state";
import { Text } from "@codemirror/text";
export function insertMarker(marker: string): StateCommand {
return ({ state, dispatch }) => {
const changes = state.changeByRange((range) => {
const isBoldBefore =
state.sliceDoc(range.from - marker.length, range.from) === marker;
const isBoldAfter =
state.sliceDoc(range.to, range.to + marker.length) === marker;
const changes = [];
changes.push(
isBoldBefore
? {
from: range.from - marker.length,
to: range.from,
insert: Text.of([""]),
}
: {
from: range.from,
insert: Text.of([marker]),
}
);
changes.push(
isBoldAfter
? {
from: range.to,
to: range.to + marker.length,
insert: Text.of([""]),
}
: {
from: range.to,
insert: Text.of([marker]),
}
);
const extendBefore = isBoldBefore ? -marker.length : marker.length;
const extendAfter = isBoldAfter ? -marker.length : marker.length;
return {
changes,
range: EditorSelection.range(
range.from + extendBefore,
range.to + extendAfter
),
};
});
dispatch(
state.update(changes, {
scrollIntoView: true,
annotations: Transaction.userEvent.of("input"),
})
);
return true;
};
}

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import { AppCommand } from "../types";
import { isMacLike } from "../util";
import { FilterList, Option } from "./filter";
import { faPersonRunning } from "@fortawesome/free-solid-svg-icons";
export function CommandPalette({
commands,
onTrigger,
}: {
commands: Map<string, AppCommand>;
onTrigger: (command: AppCommand | undefined) => void;
}) {
let options: Option[] = [];
const isMac = isMacLike();
for (let [name, def] of commands.entries()) {
options.push({
name: name,
hint: isMac && def.command.mac ? def.command.mac : def.command.key,
});
}
console.log("Commands", options);
return (
<FilterList
label="Run"
placeholder="Command"
options={options}
allowNew={false}
icon={faPersonRunning}
helpText="Start typing the command name to filter results, press <code>Return</code> to run."
onSelect={(opt) => {
if (opt) {
onTrigger(commands.get(opt.name));
} else {
onTrigger(undefined);
}
}}
/>
);
}

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import React, { useEffect, useRef, useState } from "react";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import { IconDefinition } from "@fortawesome/free-solid-svg-icons";
export interface Option {
name: string;
orderId?: number;
hint?: string;
}
function magicSorter(a: Option, b: Option): number {
if (a.orderId && b.orderId) {
return a.orderId < b.orderId ? -1 : 1;
}
return a.name.toLowerCase() < b.name.toLowerCase() ? -1 : 1;
}
export function FilterList({
placeholder,
options,
label,
onSelect,
onKeyPress,
allowNew = false,
helpText = "",
icon,
newHint,
}: {
placeholder: string;
options: Option[];
label: string;
onKeyPress?: (key: string, currentText: string) => void;
onSelect: (option: Option | undefined) => void;
allowNew?: boolean;
helpText: string;
newHint?: string;
icon?: IconDefinition;
}) {
const searchBoxRef = useRef<HTMLInputElement>(null);
const [text, setText] = useState("");
const [matchingOptions, setMatchingOptions] = useState(
options.sort(magicSorter)
);
const [selectedOption, setSelectionOption] = useState(0);
let selectedElementRef = useRef<HTMLDivElement>(null);
const filter = (e: React.ChangeEvent<HTMLInputElement>) => {
const originalPhrase = e.target.value;
const searchPhrase = originalPhrase.toLowerCase();
if (searchPhrase) {
let foundExactMatch = false;
let results = options.filter((option) => {
if (option.name.toLowerCase() === searchPhrase) {
foundExactMatch = true;
}
return option.name.toLowerCase().indexOf(searchPhrase) !== -1;
});
results = results.sort(magicSorter);
if (allowNew && !foundExactMatch) {
results.push({
name: originalPhrase,
hint: newHint,
});
}
setMatchingOptions(results);
} else {
let results = options.sort(magicSorter);
setMatchingOptions(results);
}
setText(originalPhrase);
setSelectionOption(0);
};
useEffect(() => {
searchBoxRef.current!.focus();
}, []);
useEffect(() => {
function closer() {
onSelect(undefined);
}
document.addEventListener("click", closer);
return () => {
document.removeEventListener("click", closer);
};
}, []);
const returnEl = (
<div className="filter-box">
<div className="header">
<label>{label}</label>
<input
type="text"
value={text}
placeholder={placeholder}
ref={searchBoxRef}
onChange={filter}
onKeyDown={(e: React.KeyboardEvent) => {
// console.log("Key up", e.key);
if (onKeyPress) {
onKeyPress(e.key, text);
}
switch (e.key) {
case "ArrowUp":
setSelectionOption(Math.max(0, selectedOption - 1));
break;
case "ArrowDown":
setSelectionOption(
Math.min(matchingOptions.length - 1, selectedOption + 1)
);
break;
case "Enter":
onSelect(matchingOptions[selectedOption]);
e.preventDefault();
break;
case "Escape":
onSelect(undefined);
break;
}
}}
/>
</div>
<div
className="help-text"
dangerouslySetInnerHTML={{ __html: helpText }}
></div>
<div className="result-list">
{matchingOptions && matchingOptions.length > 0
? matchingOptions.map((option, idx) => (
<div
key={"" + idx}
ref={selectedOption === idx ? selectedElementRef : undefined}
className={
selectedOption === idx ? "selected-option" : "option"
}
onMouseOver={(e) => {
setSelectionOption(idx);
}}
onClick={(e) => {
e.preventDefault();
onSelect(option);
}}
>
<span className="icon">
{icon && <FontAwesomeIcon icon={icon} />}
</span>
<span className="name">{option.name}</span>
{option.hint && <span className="hint">{option.hint}</span>}
</div>
))
: null}
</div>
</div>
);
useEffect(() => {
selectedElementRef.current?.scrollIntoView({
block: "nearest",
});
});
return returnEl;
}

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import { PageMeta } from "../types";
import { FilterList, Option } from "./filter";
import { faFileLines } from "@fortawesome/free-solid-svg-icons";
export function PageNavigator({
allPages,
onNavigate,
currentPage,
}: {
allPages: Set<PageMeta>;
onNavigate: (page: string | undefined) => void;
currentPage?: string;
}) {
let options: Option[] = [];
for (let pageMeta of allPages) {
if (currentPage && currentPage === pageMeta.name) {
continue;
}
// Order by last modified date in descending order
let orderId = -pageMeta.lastModified;
// Unless it was opened and is still in memory
if (pageMeta.lastOpened) {
orderId = -pageMeta.lastOpened;
}
options.push({
...pageMeta,
orderId: orderId,
});
}
return (
<FilterList
placeholder="Page"
label="Open"
options={options}
icon={faFileLines}
allowNew={true}
helpText="Start typing the page name to filter results, press <code>Return</code> to open."
newHint="Create page"
onSelect={(opt) => {
onNavigate(opt?.name);
}}
/>
);
}

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import { EditorView } from "@codemirror/view";
import * as util from "../util";
export function StatusBar({ editorView }: { editorView?: EditorView }) {
let wordCount = 0,
readingTime = 0;
if (editorView) {
let text = editorView.state.sliceDoc();
wordCount = util.countWords(text);
readingTime = util.readingTime(wordCount);
}
return (
<div id="bottom">
{wordCount} words | {readingTime} min
</div>
);
}

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import { AppViewState, PageMeta } from "../types";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import { faFileLines } from "@fortawesome/free-solid-svg-icons";
import { Notification } from "../types";
function prettyName(s: string | undefined): string {
if (!s) {
return "";
}
return s.replaceAll("/", " / ");
}
export function TopBar({
pageName,
status,
notifications,
onClick,
}: {
pageName?: string;
status?: string;
notifications: Notification[];
onClick: () => void;
}) {
return (
<div id="top" onClick={onClick}>
<div className="inner">
<span className="icon">
<FontAwesomeIcon icon={faFileLines} />
</span>
<span className="current-page">{prettyName(pageName)}</span>
<div className="status">
{notifications.map((notification) => (
<div key={notification.id}>{notification.message}</div>
))}
</div>
</div>
</div>
);
}

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export const pageLinkRegex = /\[\[([\w\s\/\:,\.\-]+)\]\]/;

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import { StateEffect } from "@codemirror/state";
export type Cursor = {
pos: number;
userId: string;
color: string;
};
export const cursorEffect = StateEffect.define<Cursor>({
map({ pos, userId, color }, changes) {
return { pos: changes.mapPos(pos), userId, color };
},
});

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import { Tag } from "@codemirror/highlight";
export const WikiLinkTag = Tag.define();
export const WikiLinkPageTag = Tag.define();
export const TagTag = Tag.define();
export const MentionTag = Tag.define();
export const TaskTag = Tag.define();
export const TaskMarkerTag = Tag.define();
export const CommentTag = Tag.define();
export const CommentMarkerTag = Tag.define();
export const BulletList = Tag.define();
export const OrderedList = Tag.define();

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import {
autocompletion,
Completion,
CompletionContext,
completionKeymap,
CompletionResult,
} from "@codemirror/autocomplete";
import { closeBrackets, closeBracketsKeymap } from "@codemirror/closebrackets";
import { indentWithTab, standardKeymap } from "@codemirror/commands";
import { history, historyKeymap } from "@codemirror/history";
import { bracketMatching } from "@codemirror/matchbrackets";
import { searchKeymap } from "@codemirror/search";
import { EditorSelection, EditorState, Text } from "@codemirror/state";
import {
drawSelection,
dropCursor,
EditorView,
highlightSpecialChars,
KeyBinding,
keymap,
} from "@codemirror/view";
// import { debounce } from "lodash";
import React, { useEffect, useReducer } from "react";
import ReactDOM from "react-dom";
import { Plug, System } from "../plugbox/runtime";
import { createSandbox as createIFrameSandbox } from "../plugbox/iframe_sandbox";
import { AppEvent, AppEventDispatcher, ClickEvent } from "./app_event";
import { CollabDocument, collabExtension } from "./collab";
import * as commands from "./commands";
import { CommandPalette } from "./components/command_palette";
import { PageNavigator } from "./components/page_navigator";
import { TopBar } from "./components/top_bar";
import { Cursor } from "./cursorEffect";
import coreManifest from "./generated/core.plug.json";
import { lineWrapper } from "./line_wrapper";
import { markdown } from "./markdown";
import { IPageNavigator, PathPageNavigator } from "./navigator";
import customMarkDown from "./parser";
import reducer from "./reducer";
import { smartQuoteKeymap } from "./smart_quotes";
import { Space } from "./space";
import customMarkdownStyle from "./style";
import dbSyscalls from "./syscalls/db.localstorage";
import editorSyscalls from "./syscalls/editor.browser";
import indexerSyscalls from "./syscalls/indexer.native";
import spaceSyscalls from "./syscalls/space.native";
import {
Action,
AppCommand,
AppViewState,
initialViewState,
NuggetHook,
slashCommandRegexp,
} from "./types";
import { safeRun } from "./util";
class PageState {
scrollTop: number;
selection: EditorSelection;
constructor(scrollTop: number, selection: EditorSelection) {
this.scrollTop = scrollTop;
this.selection = selection;
}
}
export class Editor implements AppEventDispatcher {
editorView?: EditorView;
viewState: AppViewState;
viewDispatch: React.Dispatch<Action>;
openPages: Map<string, PageState>;
space: Space;
editorCommands: Map<string, AppCommand>;
plugs: Plug<NuggetHook>[];
navigationResolve?: (val: undefined) => void;
pageNavigator: IPageNavigator;
constructor(space: Space, parent: Element) {
this.editorCommands = new Map();
this.openPages = new Map();
this.plugs = [];
this.space = space;
this.viewState = initialViewState;
this.viewDispatch = () => {};
this.render(parent);
this.editorView = new EditorView({
state: this.createEditorState(
"",
new CollabDocument(Text.of([""]), 0, new Map<string, Cursor>())
),
parent: document.getElementById("editor")!,
});
this.pageNavigator = new PathPageNavigator();
}
async init() {
await this.loadPlugs();
this.focus();
this.pageNavigator.subscribe(async (pageName) => {
console.log("Now navigating to", pageName);
if (!this.editorView) {
return;
}
await this.loadPage(pageName);
});
this.space.on({
connect: () => {
if (this.currentPage) {
console.log("Connected to socket, fetch fresh?");
this.flashNotification("Reconnected, reloading page");
this.reloadPage();
}
},
pageChanged: (meta) => {
if (this.currentPage === meta.name) {
console.log("Page changed on disk, reloading");
this.flashNotification("Page changed on disk, reloading");
this.reloadPage();
}
},
pageListUpdated: (pages) => {
this.viewDispatch({
type: "pages-listed",
pages: pages,
});
},
});
if (this.pageNavigator.getCurrentPage() === "") {
this.pageNavigator.navigate("start");
}
}
flashNotification(message: string) {
let id = Math.floor(Math.random() * 1000000);
this.viewDispatch({
type: "show-notification",
notification: {
id: id,
message: message,
date: new Date(),
},
});
setTimeout(() => {
this.viewDispatch({
type: "dismiss-notification",
id: id,
});
}, 2000);
}
async loadPlugs() {
const system = new System<NuggetHook>();
system.registerSyscalls(
dbSyscalls,
editorSyscalls(this),
spaceSyscalls(this),
indexerSyscalls(this.space)
);
console.log("Now loading core plug");
let mainPlug = await system.load(
"core",
coreManifest,
createIFrameSandbox(system)
);
this.plugs.push(mainPlug);
this.editorCommands = new Map<string, AppCommand>();
for (let plug of this.plugs) {
this.buildCommands(plug);
}
this.viewDispatch({
type: "update-commands",
commands: this.editorCommands,
});
}
private buildCommands(plug: Plug<NuggetHook>) {
const cmds = plug.manifest!.hooks.commands;
for (let name in cmds) {
let cmd = cmds[name];
this.editorCommands.set(name, {
command: cmd,
run: async (arg): Promise<any> => {
return await plug.invoke(cmd.invoke, [arg]);
},
});
}
}
// TODO: Parallelize?
async dispatchAppEvent(name: AppEvent, data?: any): Promise<any[]> {
let results: any[] = [];
for (let plug of this.plugs) {
let plugResults = await plug.dispatchEvent(name, data);
if (plugResults) {
for (let result of plugResults) {
results.push(result);
}
}
}
return results;
}
get currentPage(): string | undefined {
return this.viewState.currentPage;
}
createEditorState(pageName: string, doc: CollabDocument): EditorState {
let commandKeyBindings: KeyBinding[] = [];
for (let def of this.editorCommands.values()) {
if (def.command.key) {
commandKeyBindings.push({
key: def.command.key,
mac: def.command.mac,
run: (): boolean => {
Promise.resolve()
.then(async () => {
await def.run(null);
})
.catch((e) => console.error(e));
return true;
},
});
}
}
return EditorState.create({
doc: doc.text,
extensions: [
highlightSpecialChars(),
history(),
drawSelection(),
dropCursor(),
customMarkdownStyle,
bracketMatching(),
closeBrackets(),
collabExtension(pageName, this.space.socket.id, doc, this.space, {
pushUpdates: this.space.pushUpdates.bind(this.space),
pullUpdates: this.space.pullUpdates.bind(this.space),
reload: this.reloadPage.bind(this),
}),
autocompletion({
override: [
this.plugCompleter.bind(this),
this.commandCompleter.bind(this),
],
}),
EditorView.lineWrapping,
lineWrapper([
{ selector: "ATXHeading1", class: "line-h1" },
{ selector: "ATXHeading2", class: "line-h2" },
{ selector: "ATXHeading3", class: "line-h3" },
{ selector: "ListItem", class: "line-li", nesting: true },
{ selector: "Blockquote", class: "line-blockquote" },
{ selector: "Task", class: "line-task" },
{ selector: "CodeBlock", class: "line-code" },
{ selector: "FencedCode", class: "line-fenced-code" },
{ selector: "Comment", class: "line-comment" },
{ selector: "BulletList", class: "line-ul" },
{ selector: "OrderedList", class: "line-ol" },
]),
keymap.of([
...smartQuoteKeymap,
...closeBracketsKeymap,
...standardKeymap,
...searchKeymap,
...historyKeymap,
...completionKeymap,
indentWithTab,
...commandKeyBindings,
{
key: "Ctrl-b",
mac: "Cmd-b",
run: commands.insertMarker("**"),
},
{
key: "Ctrl-i",
mac: "Cmd-i",
run: commands.insertMarker("_"),
},
{
key: "Ctrl-p",
mac: "Cmd-p",
run: (): boolean => {
window.open(location.href, "_blank")!.focus();
return true;
},
},
{
key: "Ctrl-k",
mac: "Cmd-k",
run: (): boolean => {
this.viewDispatch({ type: "start-navigate" });
return true;
},
},
{
key: "Ctrl-.",
mac: "Cmd-.",
run: (): boolean => {
this.viewDispatch({
type: "show-palette",
});
return true;
},
},
]),
EditorView.domEventHandlers({
click: (event: MouseEvent, view: EditorView) => {
safeRun(async () => {
let clickEvent: ClickEvent = {
ctrlKey: event.ctrlKey,
metaKey: event.metaKey,
altKey: event.altKey,
pos: view.posAtCoords(event)!,
};
await this.dispatchAppEvent("page:click", clickEvent);
});
},
}),
markdown({
base: customMarkDown,
}),
],
});
}
reloadPage() {
console.log("Reloading page");
safeRun(async () => {
await this.loadPage(this.currentPage!);
});
}
async plugCompleter(): Promise<CompletionResult | null> {
let allCompletionResults = await this.dispatchAppEvent("editor:complete");
if (allCompletionResults.length === 1) {
return allCompletionResults[0];
} else if (allCompletionResults.length > 1) {
console.error(
"Got completion results from multiple sources, cannot deal with that",
allCompletionResults
);
}
return null;
}
commandCompleter(ctx: CompletionContext): CompletionResult | null {
let prefix = ctx.matchBefore(slashCommandRegexp);
if (!prefix) {
return null;
}
let options: Completion[] = [];
for (let [name, def] of this.viewState.commands) {
if (!def.command.slashCommand) {
continue;
}
options.push({
label: def.command.slashCommand,
detail: name,
apply: () => {
this.editorView?.dispatch({
changes: {
from: prefix!.from,
to: ctx.pos,
insert: "",
},
});
safeRun(async () => {
await def.run(null);
});
},
});
}
return {
from: prefix.from + 1,
options: options,
};
}
focus() {
this.editorView!.focus();
}
navigate(name: string) {
this.pageNavigator.navigate(name);
}
async loadPage(pageName: string) {
const editorView = this.editorView;
if (!editorView) {
return;
}
// Persist current page state and nicely close page
if (this.currentPage) {
let pageState = this.openPages.get(this.currentPage)!;
if (pageState) {
pageState.selection = this.editorView!.state.selection;
pageState.scrollTop = this.editorView!.scrollDOM.scrollTop;
}
await this.space.closePage(this.currentPage);
}
// Fetch next page to open
let doc = await this.space.openPage(pageName);
let editorState = this.createEditorState(pageName, doc);
let pageState = this.openPages.get(pageName);
editorView.setState(editorState);
if (!pageState) {
pageState = new PageState(0, editorState.selection);
this.openPages.set(pageName, pageState!);
editorView.dispatch({
selection: { anchor: 0 },
});
} else {
// Restore state
console.log("Restoring selection state", pageState.selection);
editorView.dispatch({
selection: pageState.selection,
});
editorView.scrollDOM.scrollTop = pageState!.scrollTop;
}
this.viewDispatch({
type: "page-loaded",
name: pageName,
});
}
ViewComponent(): React.ReactElement {
const [viewState, dispatch] = useReducer(reducer, initialViewState);
this.viewState = viewState;
this.viewDispatch = dispatch;
let editor = this;
useEffect(() => {
if (viewState.currentPage) {
document.title = viewState.currentPage;
}
}, [viewState.currentPage]);
return (
<>
{viewState.showPageNavigator && (
<PageNavigator
allPages={viewState.allPages}
currentPage={this.currentPage}
onNavigate={(page) => {
dispatch({ type: "stop-navigate" });
editor.focus();
if (page) {
safeRun(async () => {
editor.navigate(page);
});
}
}}
/>
)}
{viewState.showCommandPalette && (
<CommandPalette
onTrigger={(cmd) => {
dispatch({ type: "hide-palette" });
editor!.focus();
if (cmd) {
safeRun(async () => {
let result = await cmd.run(null);
console.log("Result of command", result);
});
}
}}
commands={viewState.commands}
/>
)}
<TopBar
pageName={viewState.currentPage}
notifications={viewState.notifications}
onClick={() => {
dispatch({ type: "start-navigate" });
}}
/>
<div id="editor"></div>
</>
);
}
render(container: ReactDOM.Container) {
const ViewComponent = this.ViewComponent.bind(this);
ReactDOM.render(<ViewComponent />, container);
}
}

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export abstract class EventEmitter<HandlerT> {
private handlers: Partial<HandlerT>[] = [];
on(handlers: Partial<HandlerT>) {
this.handlers.push(handlers);
}
off(handlers: Partial<HandlerT>) {
this.handlers = this.handlers.filter((h) => h !== handlers);
}
emit(eventName: keyof HandlerT, ...args: any[]) {
for (let handler of this.handlers) {
let fn: any = handler[eventName];
if (fn) {
fn(...args);
}
}
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Silver Bullet</title>
<link rel="stylesheet" href="styles/main.scss" />
<script type="module" src="boot.ts"></script>
<link rel="manifest" href="manifest.json" />
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
</head>
<body>
<div id="root"></div>
</body>
</html>

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import { syntaxTree } from "@codemirror/language";
import {
Decoration,
DecorationSet,
EditorView,
ViewPlugin,
ViewUpdate,
} from "@codemirror/view";
import { Range } from "@codemirror/rangeset";
interface WrapElement {
selector: string;
class: string;
nesting?: boolean;
}
function wrapLines(view: EditorView, wrapElements: WrapElement[]) {
let widgets: Range<Decoration>[] = [];
let elementStack: string[] = [];
for (let { from, to } of view.visibleRanges) {
const doc = view.state.doc;
syntaxTree(view.state).iterate({
from,
to,
enter: (type, from, to) => {
const bodyText = doc.sliceString(from, to);
for (let wrapElement of wrapElements) {
if (type.name == wrapElement.selector) {
if (wrapElement.nesting) {
elementStack.push(type.name);
}
const bodyText = doc.sliceString(from, to);
let idx = from;
for (let line of bodyText.split("\n")) {
let cls = wrapElement.class;
if (wrapElement.nesting) {
cls = `${cls} ${cls}-${elementStack.length}`;
}
widgets.push(
Decoration.line({
class: cls,
}).range(doc.lineAt(idx).from)
);
idx += line.length + 1;
}
}
}
},
leave(type, from: number, to: number) {
for (let wrapElement of wrapElements) {
if (type.name == wrapElement.selector && wrapElement.nesting) {
elementStack.pop();
}
}
},
});
}
// Widgets have to be sorted by `from` in ascending order
widgets = widgets.sort((a, b) => {
return a.from < b.from ? -1 : 1;
});
return Decoration.set(widgets);
}
export const lineWrapper = (wrapElements: WrapElement[]) =>
ViewPlugin.fromClass(
class {
decorations: DecorationSet;
constructor(view: EditorView) {
this.decorations = wrapLines(view, wrapElements);
}
update(update: ViewUpdate) {
if (update.docChanged || update.viewportChanged) {
this.decorations = wrapLines(update.view, wrapElements);
}
}
},
{
decorations: (v) => v.decorations,
}
);

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{
"short_name": "Silver Bullet",
"name": "Silver Bullet",
"icons": [
{
"src": "./images/logo.png",
"type": "image/png",
"sizes": "1024x1024"
}
],
"capture_links": "new-client",
"start_url": "/",
"display": "standalone",
"scope": "/",
"theme_color": "#000",
"description": "Note taking for winners"
}

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import {
StateCommand,
Text,
EditorSelection,
ChangeSpec,
} from "@codemirror/state";
import { syntaxTree } from "@codemirror/language";
import { SyntaxNode, Tree } from "@lezer/common";
import { markdownLanguage } from "./markdown";
function nodeStart(node: SyntaxNode, doc: Text) {
return doc.sliceString(node.from, node.from + 50);
}
class Context {
constructor(
readonly node: SyntaxNode,
readonly from: number,
readonly to: number,
readonly spaceBefore: string,
readonly spaceAfter: string,
readonly type: string,
readonly item: SyntaxNode | null
) {}
blank(trailing: boolean = true) {
let result = this.spaceBefore;
if (this.node.name == "Blockquote") {
result += ">";
} else if (this.node.name == "Comment") {
result += "%%";
} else
for (
let i = this.to - this.from - result.length - this.spaceAfter.length;
i > 0;
i--
)
result += " ";
return result + (trailing ? this.spaceAfter : "");
}
marker(doc: Text, add: number) {
let number =
this.node.name == "OrderedList"
? String(+itemNumber(this.item!, doc)[2] + add)
: "";
return this.spaceBefore + number + this.type + this.spaceAfter;
}
}
function getContext(node: SyntaxNode, line: string, doc: Text) {
let nodes = [];
for (
let cur: SyntaxNode | null = node;
cur && cur.name != "Document";
cur = cur.parent
) {
if (
cur.name == "ListItem" ||
cur.name == "Blockquote" ||
cur.name == "Comment"
)
nodes.push(cur);
}
let context = [],
pos = 0;
for (let i = nodes.length - 1; i >= 0; i--) {
let node = nodes[i],
match,
start = pos;
if (
node.name == "Blockquote" &&
(match = /^[ \t]*>( ?)/.exec(line.slice(pos)))
) {
pos += match[0].length;
context.push(new Context(node, start, pos, "", match[1], ">", null));
} else if (
node.name == "Comment" &&
(match = /^[ \t]*%%( ?)/.exec(line.slice(pos)))
) {
pos += match[0].length;
context.push(new Context(node, start, pos, "", match[1], "%%", null));
} else if (
node.name == "ListItem" &&
node.parent!.name == "OrderedList" &&
(match = /^([ \t]*)\d+([.)])([ \t]*)/.exec(nodeStart(node, doc)))
) {
let after = match[3],
len = match[0].length;
if (after.length >= 4) {
after = after.slice(0, after.length - 4);
len -= 4;
}
pos += len;
context.push(
new Context(node.parent!, start, pos, match[1], after, match[2], node)
);
} else if (
node.name == "ListItem" &&
node.parent!.name == "BulletList" &&
(match = /^([ \t]*)([-+*])([ \t]+)/.exec(nodeStart(node, doc)))
) {
let after = match[3],
len = match[0].length;
if (after.length > 4) {
after = after.slice(0, after.length - 4);
len -= 4;
}
pos += len;
context.push(
new Context(node.parent!, start, pos, match[1], after, match[2], node)
);
}
}
return context;
}
function itemNumber(item: SyntaxNode, doc: Text) {
return /^(\s*)(\d+)(?=[.)])/.exec(
doc.sliceString(item.from, item.from + 10)
)!;
}
function renumberList(
after: SyntaxNode,
doc: Text,
changes: ChangeSpec[],
offset = 0
) {
for (let prev = -1, node = after; ; ) {
if (node.name == "ListItem") {
let m = itemNumber(node, doc);
let number = +m[2];
if (prev >= 0) {
if (number != prev + 1) return;
changes.push({
from: node.from + m[1].length,
to: node.from + m[0].length,
insert: String(prev + 2 + offset),
});
}
prev = number;
}
let next = node.nextSibling;
if (!next) break;
node = next;
}
}
/// This command, when invoked in Markdown context with cursor
/// selection(s), will create a new line with the markup for
/// blockquotes and lists that were active on the old line. If the
/// cursor was directly after the end of the markup for the old line,
/// trailing whitespace and list markers are removed from that line.
///
/// The command does nothing in non-Markdown context, so it should
/// not be used as the only binding for Enter (even in a Markdown
/// document, HTML and code regions might use a different language).
export const insertNewlineContinueMarkup: StateCommand = ({
state,
dispatch,
}) => {
let tree = syntaxTree(state),
{ doc } = state;
let dont = null,
changes = state.changeByRange((range) => {
if (!range.empty || !markdownLanguage.isActiveAt(state, range.from))
return (dont = { range });
let pos = range.from,
line = doc.lineAt(pos);
let context = getContext(tree.resolveInner(pos, -1), line.text, doc);
while (
context.length &&
context[context.length - 1].from > pos - line.from
)
context.pop();
if (!context.length) return (dont = { range });
let inner = context[context.length - 1];
if (inner.to - inner.spaceAfter.length > pos - line.from)
return (dont = { range });
let emptyLine =
pos >= inner.to - inner.spaceAfter.length &&
!/\S/.test(line.text.slice(inner.to));
// Empty line in list
if (inner.item && emptyLine) {
// First list item or blank line before: delete a level of markup
if (
inner.node.firstChild!.to >= pos ||
(line.from > 0 && !/[^\s>]/.test(doc.lineAt(line.from - 1).text))
) {
let next = context.length > 1 ? context[context.length - 2] : null;
let delTo,
insert = "";
if (next && next.item) {
// Re-add marker for the list at the next level
delTo = line.from + next.from;
insert = next.marker(doc, 1);
} else {
delTo = line.from + (next ? next.to : 0);
}
let changes: ChangeSpec[] = [{ from: delTo, to: pos, insert }];
if (inner.node.name == "OrderedList")
renumberList(inner.item!, doc, changes, -2);
if (next && next.node.name == "OrderedList")
renumberList(next.item!, doc, changes);
return {
range: EditorSelection.cursor(delTo + insert.length),
changes,
};
} else {
// Move this line down
let insert = "";
for (let i = 0, e = context.length - 2; i <= e; i++)
insert += context[i].blank(i < e);
insert += state.lineBreak;
return {
range: EditorSelection.cursor(pos + insert.length),
changes: { from: line.from, insert },
};
}
}
if (inner.node.name == "Blockquote" && emptyLine && line.from) {
let prevLine = doc.lineAt(line.from - 1),
quoted = />\s*$/.exec(prevLine.text);
// Two aligned empty quoted lines in a row
if (quoted && quoted.index == inner.from) {
let changes = state.changes([
{ from: prevLine.from + quoted.index, to: prevLine.to },
{ from: line.from + inner.from, to: line.to },
]);
return { range: range.map(changes), changes };
}
}
if (inner.node.name == "Comment" && emptyLine && line.from) {
let prevLine = doc.lineAt(line.from - 1),
commented = /%%\s*$/.exec(prevLine.text);
// Two aligned empty quoted lines in a row
if (commented && commented.index == inner.from) {
let changes = state.changes([
{ from: prevLine.from + commented.index, to: prevLine.to },
{ from: line.from + inner.from, to: line.to },
]);
return { range: range.map(changes), changes };
}
}
let changes: ChangeSpec[] = [];
if (inner.node.name == "OrderedList")
renumberList(inner.item!, doc, changes);
let insert = state.lineBreak;
let continued = inner.item && inner.item.from < line.from;
// If not dedented
if (
!continued ||
/^[\s\d.)\-+*>]*/.exec(line.text)![0].length >= inner.to
) {
for (let i = 0, e = context.length - 1; i <= e; i++)
insert +=
i == e && !continued
? context[i].marker(doc, 1)
: context[i].blank();
}
let from = pos;
while (
from > line.from &&
/\s/.test(line.text.charAt(from - line.from - 1))
)
from--;
changes.push({ from, to: pos, insert });
return { range: EditorSelection.cursor(from + insert.length), changes };
});
if (dont) return false;
dispatch(state.update(changes, { scrollIntoView: true, userEvent: "input" }));
return true;
};
function isMark(node: SyntaxNode) {
return node.name == "QuoteMark" || node.name == "ListMark";
}
function contextNodeForDelete(tree: Tree, pos: number) {
let node = tree.resolveInner(pos, -1),
scan = pos;
if (isMark(node)) {
scan = node.from;
node = node.parent!;
}
for (let prev; (prev = node.childBefore(scan)); ) {
if (isMark(prev)) {
scan = prev.from;
} else if (prev.name == "OrderedList" || prev.name == "BulletList") {
node = prev.lastChild!;
scan = node.to;
} else {
break;
}
}
return node;
}
/// This command will, when invoked in a Markdown context with the
/// cursor directly after list or blockquote markup, delete one level
/// of markup. When the markup is for a list, it will be replaced by
/// spaces on the first invocation (a further invocation will delete
/// the spaces), to make it easy to continue a list.
///
/// When not after Markdown block markup, this command will return
/// false, so it is intended to be bound alongside other deletion
/// commands, with a higher precedence than the more generic commands.
export const deleteMarkupBackward: StateCommand = ({ state, dispatch }) => {
let tree = syntaxTree(state);
let dont = null,
changes = state.changeByRange((range) => {
let pos = range.from,
{ doc } = state;
if (range.empty && markdownLanguage.isActiveAt(state, range.from)) {
let line = doc.lineAt(pos);
let context = getContext(
contextNodeForDelete(tree, pos),
line.text,
doc
);
if (context.length) {
let inner = context[context.length - 1];
let spaceEnd =
inner.to - inner.spaceAfter.length + (inner.spaceAfter ? 1 : 0);
// Delete extra trailing space after markup
if (
pos - line.from > spaceEnd &&
!/\S/.test(line.text.slice(spaceEnd, pos - line.from))
)
return {
range: EditorSelection.cursor(line.from + spaceEnd),
changes: { from: line.from + spaceEnd, to: pos },
};
if (pos - line.from == spaceEnd) {
let start = line.from + inner.from;
// Replace a list item marker with blank space
if (
inner.item &&
inner.node.from < inner.item.from &&
/\S/.test(line.text.slice(inner.from, inner.to))
)
return {
range,
changes: {
from: start,
to: line.from + inner.to,
insert: inner.blank(),
},
};
// Delete one level of indentation
if (start < pos)
return {
range: EditorSelection.cursor(start),
changes: { from: start, to: pos },
};
}
}
}
return (dont = { range });
});
if (dont) return false;
dispatch(
state.update(changes, { scrollIntoView: true, userEvent: "delete" })
);
return true;
};

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import {Prec} from "@codemirror/state"
import {KeyBinding, keymap} from "@codemirror/view"
import {Language, LanguageSupport, LanguageDescription} from "@codemirror/language"
import {MarkdownExtension, MarkdownParser, parseCode} from "@lezer/markdown"
import {html} from "@codemirror/lang-html"
import {commonmarkLanguage, markdownLanguage, mkLang, getCodeParser} from "./markdown"
import {insertNewlineContinueMarkup, deleteMarkupBackward} from "./commands"
export {commonmarkLanguage, markdownLanguage, insertNewlineContinueMarkup, deleteMarkupBackward}
/// A small keymap with Markdown-specific bindings. Binds Enter to
/// [`insertNewlineContinueMarkup`](#lang-markdown.insertNewlineContinueMarkup)
/// and Backspace to
/// [`deleteMarkupBackward`](#lang-markdown.deleteMarkupBackward).
export const markdownKeymap: readonly KeyBinding[] = [
{key: "Enter", run: insertNewlineContinueMarkup},
{key: "Backspace", run: deleteMarkupBackward}
]
const htmlNoMatch = html({matchClosingTags: false})
/// Markdown language support.
export function markdown(config: {
/// When given, this language will be used by default to parse code
/// blocks.
defaultCodeLanguage?: Language | LanguageSupport,
/// A collection of language descriptions to search through for a
/// matching language (with
/// [`LanguageDescription.matchLanguageName`](#language.LanguageDescription^matchLanguageName))
/// when a fenced code block has an info string.
codeLanguages?: readonly LanguageDescription[],
/// Set this to false to disable installation of the Markdown
/// [keymap](#lang-markdown.markdownKeymap).
addKeymap?: boolean,
/// Markdown parser
/// [extensions](https://github.com/lezer-parser/markdown#user-content-markdownextension)
/// to add to the parser.
extensions?: MarkdownExtension,
/// The base language to use. Defaults to
/// [`commonmarkLanguage`](#lang-markdown.commonmarkLanguage).
base?: Language
} = {}) {
let {codeLanguages, defaultCodeLanguage, addKeymap = true, base: {parser} = commonmarkLanguage} = config
if (!(parser instanceof MarkdownParser)) throw new RangeError("Base parser provided to `markdown` should be a Markdown parser")
let extensions = config.extensions ? [config.extensions] : []
let support = [htmlNoMatch.support], defaultCode
if (defaultCodeLanguage instanceof LanguageSupport) {
support.push(defaultCodeLanguage.support)
defaultCode = defaultCodeLanguage.language
} else if (defaultCodeLanguage) {
defaultCode = defaultCodeLanguage
}
let codeParser = codeLanguages || defaultCode ? getCodeParser(codeLanguages || [], defaultCode) : undefined
extensions.push(parseCode({codeParser, htmlParser: htmlNoMatch.language.parser}))
if (addKeymap) support.push(Prec.high(keymap.of(markdownKeymap)))
return new LanguageSupport(mkLang(parser.configure(extensions)), support)
}

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import {
Language, defineLanguageFacet, languageDataProp, foldNodeProp, indentNodeProp,
LanguageDescription, ParseContext
} from "@codemirror/language"
import {styleTags, tags as t} from "@codemirror/highlight"
import {parser as baseParser, MarkdownParser, GFM, Subscript, Superscript, Emoji, MarkdownConfig} from "@lezer/markdown"
const data = defineLanguageFacet({block: {open: "<!--", close: "-->"}})
export const commonmark = baseParser.configure({
props: [
styleTags({
"Blockquote/...": t.quote,
HorizontalRule: t.contentSeparator,
"ATXHeading1/... SetextHeading1/...": t.heading1,
"ATXHeading2/... SetextHeading2/...": t.heading2,
"ATXHeading3/...": t.heading3,
"ATXHeading4/...": t.heading4,
"ATXHeading5/...": t.heading5,
"ATXHeading6/...": t.heading6,
"Comment CommentBlock": t.comment,
Escape: t.escape,
Entity: t.character,
"Emphasis/...": t.emphasis,
"StrongEmphasis/...": t.strong,
"Link/... Image/...": t.link,
"OrderedList/... BulletList/...": t.list,
// "CodeBlock/... FencedCode/...": t.blockComment,
"InlineCode CodeText": t.monospace,
URL: t.url,
"HeaderMark HardBreak QuoteMark ListMark LinkMark EmphasisMark CodeMark": t.processingInstruction,
"CodeInfo LinkLabel": t.labelName,
LinkTitle: t.string,
Paragraph: t.content
}),
foldNodeProp.add(type => {
if (!type.is("Block") || type.is("Document")) return undefined
return (tree, state) => ({from: state.doc.lineAt(tree.from).to, to: tree.to})
}),
indentNodeProp.add({
Document: () => null
}),
languageDataProp.add({
Document: data
})
]
})
export function mkLang(parser: MarkdownParser) {
return new Language(data, parser, parser.nodeSet.types.find(t => t.name == "Document")!)
}
/// Language support for strict CommonMark.
export const commonmarkLanguage = mkLang(commonmark)
const extended = commonmark.configure([GFM, Subscript, Superscript, Emoji, {
props: [
styleTags({
"TableDelimiter SubscriptMark SuperscriptMark StrikethroughMark": t.processingInstruction,
"TableHeader/...": t.heading,
"Strikethrough/...": t.strikethrough,
TaskMarker: t.atom,
Task: t.list,
Emoji: t.character,
"Subscript Superscript": t.special(t.content),
TableCell: t.content
})
]
}])
/// Language support for [GFM](https://github.github.com/gfm/) plus
/// subscript, superscript, and emoji syntax.
export const markdownLanguage = mkLang(extended)
export function getCodeParser(languages: readonly LanguageDescription[],
defaultLanguage?: Language) {
return (info: string) => {
let found = info && LanguageDescription.matchLanguageName(languages, info, true)
if (!found) return defaultLanguage ? defaultLanguage.parser : null
if (found.support) return found.support.language.parser
return ParseContext.getSkippingParser(found.load())
}
}

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import { safeRun } from "./util";
export interface IPageNavigator {
subscribe(pageLoadCallback: (pageName: string) => Promise<void>): void;
navigate(page: string): void;
getCurrentPage(): string;
}
function encodePageUrl(name: string): string {
return name.replaceAll(" ", "_");
}
function decodePageUrl(url: string): string {
return url.replaceAll("_", " ");
}
export class PathPageNavigator implements IPageNavigator {
navigationResolve?: (value: undefined) => void;
async navigate(page: string) {
window.history.pushState({ page: page }, page, `/${encodePageUrl(page)}`);
window.dispatchEvent(new PopStateEvent("popstate"));
await new Promise<undefined>((resolve) => {
this.navigationResolve = resolve;
});
this.navigationResolve = undefined;
}
subscribe(pageLoadCallback: (pageName: string) => Promise<void>): void {
const cb = () => {
const gotoPage = this.getCurrentPage();
if (!gotoPage) {
return;
}
safeRun(async () => {
await pageLoadCallback(this.getCurrentPage());
if (this.navigationResolve) {
this.navigationResolve(undefined);
}
});
};
window.addEventListener("popstate", cb);
cb();
}
getCurrentPage(): string {
return decodePageUrl(location.pathname.substring(1));
}
}
export class HashPageNavigator implements IPageNavigator {
navigationResolve?: (value: undefined) => void;
async navigate(page: string) {
location.hash = encodePageUrl(page);
await new Promise<undefined>((resolve) => {
this.navigationResolve = resolve;
});
this.navigationResolve = undefined;
}
subscribe(pageLoadCallback: (pageName: string) => Promise<void>): void {
const cb = () => {
safeRun(async () => {
await pageLoadCallback(this.getCurrentPage());
if (this.navigationResolve) {
this.navigationResolve(undefined);
}
});
};
window.addEventListener("hashchange", cb);
cb();
}
getCurrentPage(): string {
return decodePageUrl(location.hash.substring(1));
}
}

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import { styleTags, tags as t } from "@codemirror/highlight";
import {
MarkdownConfig,
TaskList,
BlockContext,
LeafBlock,
LeafBlockParser,
} from "@lezer/markdown";
import { commonmark, mkLang } from "./markdown/markdown";
import * as ct from "./customtags";
import { pageLinkRegex } from "./constant";
const pageLinkRegexPrefix = new RegExp(
"^" + pageLinkRegex.toString().slice(1, -1)
);
const WikiLink: MarkdownConfig = {
defineNodes: ["WikiLink", "WikiLinkPage"],
parseInline: [
{
name: "WikiLink",
parse(cx, next, pos) {
let match: RegExpMatchArray | null;
if (
next != 91 /* '[' */ ||
!(match = pageLinkRegexPrefix.exec(cx.slice(pos, cx.end)))
) {
return -1;
}
return cx.addElement(
cx.elt("WikiLink", pos, pos + match[0].length + 1, [
cx.elt("WikiLinkPage", pos + 2, pos + match[0].length - 2),
])
);
},
after: "Emphasis",
},
],
};
const AtMention: MarkdownConfig = {
defineNodes: ["AtMention"],
parseInline: [
{
name: "AtMention",
parse(cx, next, pos) {
let match: RegExpMatchArray | null;
if (
next != 64 /* '@' */ ||
!(match = /^[A-Za-z\.]+/.exec(cx.slice(pos + 1, cx.end)))
) {
return -1;
}
return cx.addElement(
cx.elt("AtMention", pos, pos + 1 + match[0].length)
);
},
after: "Emphasis",
},
],
};
const urlRegexp =
/^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/;
const UnmarkedUrl: MarkdownConfig = {
defineNodes: ["URL"],
parseInline: [
{
name: "URL",
parse(cx, next, pos) {
let match: RegExpMatchArray | null;
if (
next != 104 /* 'h' */ ||
!(match = urlRegexp.exec(cx.slice(pos, cx.end)))
) {
return -1;
}
return cx.addElement(cx.elt("URL", pos, pos + match[0].length));
},
after: "Emphasis",
},
],
};
class CommentParser implements LeafBlockParser {
nextLine() {
return false;
}
finish(cx: BlockContext, leaf: LeafBlock) {
cx.addLeafElement(
leaf,
cx.elt("Comment", leaf.start, leaf.start + leaf.content.length, [
// cx.elt("CommentMarker", leaf.start, leaf.start + 3),
...cx.parser.parseInline(leaf.content.slice(3), leaf.start + 3),
])
);
return true;
}
}
export const Comment: MarkdownConfig = {
defineNodes: [{ name: "Comment", block: true }],
parseBlock: [
{
name: "Comment",
leaf(cx, leaf) {
return /^%%\s/.test(leaf.content) ? new CommentParser() : null;
},
after: "SetextHeading",
},
],
};
const TagLink: MarkdownConfig = {
defineNodes: ["TagLink"],
parseInline: [
{
name: "TagLink",
parse(cx, next, pos) {
let match: RegExpMatchArray | null;
if (
next != 35 /* '#' */ ||
!(match = /^[A-Za-z\.]+/.exec(cx.slice(pos + 1, cx.end)))
) {
return -1;
}
return cx.addElement(cx.elt("TagLink", pos, pos + 1 + match[0].length));
},
after: "Emphasis",
},
],
};
const WikiMarkdown = commonmark.configure([
WikiLink,
AtMention,
// TagLink,
TaskList,
UnmarkedUrl,
Comment,
{
props: [
styleTags({
WikiLink: ct.WikiLinkTag,
WikiLinkPage: ct.WikiLinkPageTag,
AtMention: ct.MentionTag,
TagLink: ct.TagTag,
Task: ct.TaskTag,
TaskMarker: ct.TaskMarkerTag,
Url: t.url,
Comment: ct.CommentTag,
}),
],
},
]);
export default mkLang(WikiMarkdown);

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import { Action, AppViewState } from "./types";
export default function reducer(
state: AppViewState,
action: Action
): AppViewState {
// console.log("Got action", action);
switch (action.type) {
case "page-loaded":
return {
...state,
allPages: new Set(
[...state.allPages].map((pageMeta) =>
pageMeta.name === action.name
? { ...pageMeta, lastOpened: Date.now() }
: pageMeta
)
),
currentPage: action.name,
};
case "start-navigate":
return {
...state,
showPageNavigator: true,
};
case "stop-navigate":
return {
...state,
showPageNavigator: false,
};
case "pages-listed":
return {
...state,
allPages: action.pages,
};
case "show-palette":
return {
...state,
showCommandPalette: true,
};
case "hide-palette":
return {
...state,
showCommandPalette: false,
};
case "update-commands":
return {
...state,
commands: action.commands,
};
case "show-notification":
return {
...state,
notifications: [action.notification, ...state.notifications],
};
case "dismiss-notification":
return {
...state,
notifications: state.notifications.filter((n) => n.id !== action.id),
};
}
return state;
}

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import { manifest, version } from "@parcel/service-worker";
async function install() {
const cache = await caches.open(version);
await cache.addAll(manifest);
}
//@ts-ignore
self.addEventListener("install", (e) => e.waitUntil(install()));
async function activate() {
const keys = await caches.keys();
await Promise.all(keys.map((key) => key !== version && caches.delete(key)));
}
//@ts-ignore
self.addEventListener("activate", (e) => e.waitUntil(activate()));
self.addEventListener("fetch", function (event) {});

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import { KeyBinding } from "@codemirror/view";
// TODO: Add support for selection (put quotes around or create blockquote block?)
function keyBindingForQuote(
quote: string,
left: string,
right: string
): KeyBinding {
return {
key: quote,
run: (target): boolean => {
let cursorPos = target.state.selection.main.from;
let chBefore = target.state.sliceDoc(cursorPos - 1, cursorPos);
let quote = right;
if (/\W/.exec(chBefore) && !/[!\?,\.\-=“]/.exec(chBefore)) {
quote = left;
}
target.dispatch({
changes: {
insert: quote,
from: cursorPos,
},
selection: {
anchor: cursorPos + 1,
},
});
return true;
},
};
}
export const smartQuoteKeymap: KeyBinding[] = [
keyBindingForQuote('"', "“", "”"),
keyBindingForQuote("'", "‘", "’"),
];

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import { PageMeta } from "./types";
import { Socket } from "socket.io-client";
import { Update } from "@codemirror/collab";
import { ChangeSet, Text, Transaction } from "@codemirror/state";
import { CollabDocument, CollabEvents } from "./collab";
import { cursorEffect } from "./cursorEffect";
import { EventEmitter } from "./event";
export type SpaceEvents = {
connect: () => void;
pageCreated: (meta: PageMeta) => void;
pageChanged: (meta: PageMeta) => void;
pageDeleted: (name: string) => void;
pageListUpdated: (pages: Set<PageMeta>) => void;
} & CollabEvents;
export type KV = {
key: string;
value: any;
};
export class Space extends EventEmitter<SpaceEvents> {
socket: Socket;
reqId = 0;
allPages = new Set<PageMeta>();
constructor(socket: Socket) {
super();
this.socket = socket;
[
"connect",
"cursorSnapshot",
"pageCreated",
"pageChanged",
"pageDeleted",
].forEach((eventName) => {
socket.on(eventName, (...args) => {
this.emit(eventName as keyof SpaceEvents, ...args);
});
});
this.wsCall("page.listPages").then((pages) => {
this.allPages = new Set(pages);
this.emit("pageListUpdated", this.allPages);
});
this.on({
pageCreated: (meta) => {
// Cannot reply on equivalence in set, need to iterate over all pages
let found = false;
for (const page of this.allPages) {
if (page.name === meta.name) {
found = true;
break;
}
}
if(!found) {
this.allPages.add(meta);
console.log("New page created", meta);
this.emit("pageListUpdated", this.allPages);
}
},
pageDeleted: (name) => {
console.log("Page delete", name);
this.allPages.forEach((meta) => {
if (name === meta.name) {
this.allPages.delete(meta);
}
});
this.emit("pageListUpdated", this.allPages);
},
});
}
private wsCall(eventName: string, ...args: any[]): Promise<any> {
return new Promise((resolve, reject) => {
this.reqId++;
this.socket!.once(`${eventName}Resp${this.reqId}`, (err, result) => {
if (err) {
reject(err);
} else {
resolve(result);
}
});
this.socket!.emit(eventName, this.reqId, ...args);
});
}
async pushUpdates(
pageName: string,
version: number,
fullUpdates: readonly (Update & { origin: Transaction })[]
): Promise<boolean> {
if (this.socket) {
let updates = fullUpdates.map((u) => ({
clientID: u.clientID,
changes: u.changes.toJSON(),
cursors: u.effects?.map((e) => e.value),
}));
return this.wsCall("page.pushUpdates", pageName, version, updates);
}
return false;
}
async pullUpdates(
pageName: string,
version: number
): Promise<readonly Update[]> {
let updates: Update[] = await this.wsCall(
"page.pullUpdates",
pageName,
version
);
return updates.map((u) => ({
changes: ChangeSet.fromJSON(u.changes),
effects: u.effects?.map((e) => cursorEffect.of(e.value)),
clientID: u.clientID,
}));
}
async listPages(): Promise<PageMeta[]> {
return Array.from(this.allPages);
}
async openPage(name: string): Promise<CollabDocument> {
this.reqId++;
let pageJSON = await this.wsCall("page.openPage", name);
return new CollabDocument(
Text.of(pageJSON.text),
pageJSON.version,
new Map(Object.entries(pageJSON.cursors))
);
}
async closePage(name: string): Promise<void> {
this.socket.emit("page.closePage", name);
}
async readPage(name: string): Promise<{ text: string; meta: PageMeta }> {
return this.wsCall("page.readPage", name);
}
async writePage(name: string, text: string): Promise<PageMeta> {
return this.wsCall("page.writePage", name, text);
}
async deletePage(name: string): Promise<void> {
return this.wsCall("page.deletePage", name);
}
async getPageMeta(name: string): Promise<PageMeta> {
return this.wsCall("page.getPageMeta", name);
}
async indexSet(pageName: string, key: string, value: any) {
await this.wsCall("index.set", pageName, key, value);
}
async indexBatchSet(pageName: string, kvs: KV[]) {
// TODO: Optimize with batch call
for (let { key, value } of kvs) {
await this.indexSet(pageName, key, value);
}
}
async indexGet(pageName: string, key: string): Promise<any | null> {
return await this.wsCall("index.get", pageName, key);
}
async indexScanPrefixForPage(
pageName: string,
keyPrefix: string
): Promise<{ key: string; value: any }[]> {
return await this.wsCall("index.scanPrefixForPage", pageName, keyPrefix);
}
async indexScanPrefixGlobal(
keyPrefix: string
): Promise<{ key: string; value: any }[]> {
return await this.wsCall("index.scanPrefixGlobal", keyPrefix);
}
async indexDeletePrefixForPage(pageName: string, keyPrefix: string) {
await this.wsCall("index.deletePrefixForPage", keyPrefix);
}
async indexDelete(pageName: string, key: string) {
await this.wsCall("index.delete", pageName, key);
}
}

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import { HighlightStyle, tags as t } from "@codemirror/highlight";
import * as ct from "./customtags";
export default HighlightStyle.define([
{ tag: t.heading1, class: "h1" },
{ tag: t.heading2, class: "h2" },
{ tag: t.heading3, class: "h3" },
{ tag: t.link, class: "link" },
{ tag: t.meta, class: "meta" },
{ tag: t.quote, class: "quote" },
{ tag: t.monospace, class: "code" },
{ tag: t.url, class: "url" },
{ tag: ct.WikiLinkTag, class: "wiki-link" },
{ tag: ct.WikiLinkPageTag, class: "wiki-link-page" },
{ tag: ct.TagTag, class: "tag" },
{ tag: ct.MentionTag, class: "mention" },
{ tag: ct.TaskTag, class: "task" },
{ tag: ct.TaskMarkerTag, class: "task-marker" },
{ tag: ct.CommentTag, class: "comment" },
{ tag: ct.CommentMarkerTag, class: "comment-marker" },
{ tag: t.emphasis, class: "emphasis" },
{ tag: t.strong, class: "strong" },
{ tag: t.atom, class: "atom" },
{ tag: t.bool, class: "bool" },
{ tag: t.url, class: "url" },
{ tag: t.inserted, class: "inserted" },
{ tag: t.deleted, class: "deleted" },
{ tag: t.literal, class: "literal" },
{ tag: t.list, class: "list" },
{ tag: t.definition, class: "li" },
{ tag: t.string, class: "string" },
{ tag: t.number, class: "number" },
{ tag: [t.regexp, t.escape, t.special(t.string)], class: "string2" },
{ tag: t.variableName, class: "variableName" },
{ tag: t.comment, class: "comment" },
{ tag: t.invalid, class: "invalid" },
{ tag: t.punctuation, class: "punctuation" },
]);

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.cm-editor {
width: 100%;
height: 100%;
font-size: var(--ident);
.cm-content {
font-family: var(--editor-font);
margin: auto;
max-width: 800px;
}
.other-cursor {
display: inline-block;
width: 2px;
margin-right: -2px;
height: 1em;
}
.cursor-label-container {
// display: none;
position: relative;
top: 2ch;
float: left;
width: 120px;
height: 2.2ch;
margin: 0;
padding: 0;
overflow: hidden;
font-family: Arial, Helvetica, sans-serif;
color: #fff;
border: gray 1px solid;
background-color: purple;
// font-size: 0.5em;
}
.cursor-label-container label {
margin: 0;
padding: 0;
font-size: 0.7em;
}
.cm-selectionBackground {
background-color: #d7e1f6 !important;
}
.line-h1,
.line-h2,
.line-h3 {
background-color: rgba(0, 15, 52, 0.6);
color: #fff;
font-weight: bold;
padding: 2px 2px;
.meta {
color: orange;
}
}
.line-h1 {
font-size: 1.5em;
}
.line-h2 {
font-size: 1.2em;
}
.line-h3 {
font-size: 1.1em;
}
/* Color list item this way */
.line-li .meta {
color: rgb(0, 123, 19);
}
/* Then undo other meta */
.line-li .meta ~ .meta {
color: #650007;
}
.line-code {
background-color: #efefef;
margin-left: 30px;
}
.line-fenced-code {
background-color: #efefef;
}
.meta {
color: #650007;
}
.line-blockquote {
background-color: rgba(220, 220, 220, 0.5);
color: #676767;
text-indent: -2ch;
padding-left: 2ch;
}
.emphasis {
font-style: italic;
}
.strong {
font-weight: 900;
}
.link:not(.meta, .url) {
color: #0330cb;
text-decoration: underline;
}
.link.url {
color: #7e7d7d;
}
.url:not(.link) {
color: #0330cb;
text-decoration: underline;
}
.wiki-link-page {
color: #0330cb;
text-decoration: underline;
}
.wiki-link {
color: #808080;
}
.mention {
color: #0330cb;
text-decoration: underline;
}
.tag {
color: #8d8d8d;
}
.code {
background-color: #efefef;
}
// Indentation of follow-up lines
@mixin lineOverflow($baseIndent) {
text-indent: -1 * ($baseIndent + 2ch);
padding-left: $baseIndent + 2ch;
&.line-task {
text-indent: -1 * ($baseIndent + 6ch);
padding-left: $baseIndent + 6ch;
}
&.line-blockquote {
text-indent: -1 * ($baseIndent + 4ch);
padding-left: $baseIndent + 4ch;
}
}
.line-ul {
&.line-li-1 {
@include lineOverflow(0);
}
&.line-li-1.line-li-2 {
@include lineOverflow(2);
}
&.line-li-1.line-li-2.line-li-3 {
@include lineOverflow(4);
}
&.line-li-1.line-li-2.line-li-3.line-li-4 {
@include lineOverflow(6);
}
&.line-li-1.line-li-2.line-li-3.line-li-4.line-li-5 {
@include lineOverflow(8);
}
}
.line-ol {
&.line-li-1 {
@include lineOverflow(1);
}
&.line-li-1.line-li-2 {
@include lineOverflow(2);
}
&.line-li-1.line-li-2.line-li-3 {
@include lineOverflow(4);
}
&.line-li-1.line-li-2.line-li-3.line-li-4 {
@include lineOverflow(6);
}
&.line-li-1.line-li-2.line-li-3.line-li-4.line-li-5 {
@include lineOverflow(8);
}
}
.line-comment {
text-indent: -1 * 3ch;
padding-left: 3ch;
}
.task-marker {
background-color: #ddd;
}
.line-comment {
background-color: rgba(255, 255, 0, 0.5);
}
}

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.filter-box {
position: absolute;
font-family: var(--ui-font);
margin: auto;
max-width: 500px;
height: 600px;
background-color: #fff;
left: 0;
right: 0;
top: 0;
bottom: 0;
max-height: 290px;
overflow: auto;
z-index: 100;
border: rgb(103, 103, 103) 1px solid;
border-radius: 8px;
box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
.header {
border-bottom: 1px rgb(108, 108, 108) solid;
padding: 13px 10px 10px 10px;
display: flex;
label {
color: var(--highlight-color);
margin: 3px;
}
input {
font-family: "Arial";
background: transparent;
color: #000;
border: 0;
padding: 3px;
outline: 0;
font-size: 1em;
flex-grow: 100;
}
input::placeholder {
color: rgb(199, 199, 199);
font-weight: normal;
}
}
.help-text {
background-color: #eee;
border-bottom: 1px rgb(108, 108, 108) solid;
padding: 5px;
color: #555;
}
.result-list {
max-height: 200px;
overflow-y: scroll;
background-color: white;
.icon {
padding: 0 8px 0 5px;
}
.name {
padding-top: -3px;
}
}
.option,
.selected-option {
padding: 8px;
cursor: pointer;
}
.selected-option {
background-color: var(--highlight-color);
color: #eee;
}
.option .hint,
.selected-option .hint {
float: right;
margin-right: 0;
margin-top: -4px;
padding-left: 5px;
padding-right: 5px;
padding-top: 3px;
padding-bottom: 3px;
color: #eee;
background-color: #212476;
border-radius: 5px;
}
}

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@use "editor.scss";
@use "filter_box.scss";
:root {
--ident: 18px;
/* --editor-font: "Avenir"; */
--editor-font: "Menlo";
--ui-font: "Arial";
--top-bar-bg: rgb(41, 41, 41);
--highlight-color: #464cfc;
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#top {
height: 55px;
position: fixed;
top: 0;
left: 0;
right: 0;
background-color: rgb(213, 213, 213);
border-bottom: rgb(193, 193, 193) 1px solid;
color: rgb(55, 55, 55);
.inner {
padding-top: 12px;
max-width: 800px;
font-size: 28px;
margin: auto;
.status {
float: right;
border: rgb(41, 41, 41) 1px solid;
border-radius: 5px;
padding: 3px;
font-size: 14px;
}
.current-page {
font-family: var(--ui-font);
font-weight: bold;
}
.icon {
padding-left: 5px;
padding-right: 10px;
}
}
}
// #bottom {
// position: fixed;
// bottom: 0;
// left: 0;
// right: 0;
// height: 20px;
// background-color: rgb(232, 232, 232);
// color: rgb(79, 78, 78);
// border-top: rgb(186, 186, 186) 1px solid;
// margin: 0;
// padding: 5px 10px;
// font-family: var(--ui-font);
// font-size: 0.9em;
// text-align: right;
// }
// body.keyboard #bottom {
// bottom: 250px;
// }
#editor {
position: absolute;
top: 55px;
bottom: 0;
left: 0;
right: 0;
overflow-y: hidden;
}
@media only screen and (max-width: 800px) {
.cm-editor .cm-content {
margin: 0 10px !important;
}
}

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export default {
"db.put": (key: string, value: any) => {
localStorage.setItem(key, value);
},
"db.get": (key: string) => {
return localStorage.getItem(key);
},
};

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import { Editor } from "../editor";
import { syntaxTree } from "@codemirror/language";
import { Transaction } from "@codemirror/state";
import { PageMeta } from "../types";
type SyntaxNode = {
name: string;
text: string;
from: number;
to: number;
};
function ensureAnchor(expr: any, start: boolean) {
var _a;
let { source } = expr;
let addStart = start && source[0] != "^",
addEnd = source[source.length - 1] != "$";
if (!addStart && !addEnd) return expr;
return new RegExp(
`${addStart ? "^" : ""}(?:${source})${addEnd ? "$" : ""}`,
(_a = expr.flags) !== null && _a !== void 0
? _a
: expr.ignoreCase
? "i"
: ""
);
}
export default (editor: Editor) => ({
"editor.getCurrentPage": (): string => {
return editor.currentPage!;
},
"editor.getText": () => {
return editor.editorView?.state.sliceDoc();
},
"editor.getCursor": (): number => {
return editor.editorView!.state.selection.main.from;
},
"editor.navigate": async (name: string) => {
await editor.navigate(name);
},
"editor.openUrl": async (url: string) => {
window.open(url, "_blank")!.focus();
},
"editor.insertAtPos": (text: string, pos: number) => {
editor.editorView!.dispatch({
changes: {
insert: text,
from: pos,
},
});
},
"editor.replaceRange": (from: number, to: number, text: string) => {
editor.editorView!.dispatch({
changes: {
insert: text,
from: from,
to: to,
},
});
},
"editor.moveCursor": (pos: number) => {
editor.editorView!.dispatch({
selection: {
anchor: pos,
},
});
},
"editor.insertAtCursor": (text: string) => {
let editorView = editor.editorView!;
let from = editorView.state.selection.main.from;
editorView.dispatch({
changes: {
insert: text,
from: from,
},
selection: {
anchor: from + text.length,
},
});
},
"editor.getSyntaxNodeUnderCursor": (): SyntaxNode | undefined => {
const editorState = editor.editorView!.state;
let selection = editorState.selection.main;
if (selection.empty) {
let node = syntaxTree(editorState).resolveInner(selection.from);
if (node) {
return {
name: node.name,
text: editorState.sliceDoc(node.from, node.to),
from: node.from,
to: node.to,
};
}
}
},
"editor.matchBefore": (
regexp: string
): { from: number; to: number; text: string } | null => {
const editorState = editor.editorView!.state;
let selection = editorState.selection.main;
let from = selection.from;
if (selection.empty) {
let line = editorState.doc.lineAt(from);
let start = Math.max(line.from, from - 250);
let str = line.text.slice(start - line.from, from - line.from);
let found = str.search(ensureAnchor(new RegExp(regexp), false));
// console.log("Line", line, start, str, new RegExp(regexp), found);
return found < 0
? null
: { from: start + found, to: from, text: str.slice(found) };
}
return null;
},
"editor.getSyntaxNodeAtPos": (pos: number): SyntaxNode | undefined => {
const editorState = editor.editorView!.state;
let node = syntaxTree(editorState).resolveInner(pos);
if (node) {
return {
name: node.name,
text: editorState.sliceDoc(node.from, node.to),
from: node.from,
to: node.to,
};
}
},
"editor.dispatch": (change: Transaction) => {
editor.editorView!.dispatch(change);
},
"editor.prompt": (message: string, defaultValue = ""): string | null => {
return prompt(message, defaultValue);
},
});

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import { Space, KV } from "../space";
export default (space: Space) => ({
"indexer.scanPrefixForPage": async (pageName: string, keyPrefix: string) => {
return await space.indexScanPrefixForPage(pageName, keyPrefix);
},
"indexer.scanPrefixGlobal": async (keyPrefix: string) => {
return await space.indexScanPrefixGlobal(keyPrefix);
},
"indexer.get": async (pageName: string, key: string): Promise<any> => {
return await space.indexGet(pageName, key);
},
"indexer.set": async (pageName: string, key: string, value: any) => {
await space.indexSet(pageName, key, value);
},
"indexer.batchSet": async (pageName: string, kvs: KV[]) => {
await space.indexBatchSet(pageName, kvs);
},
"indexer.delete": async (pageName: string, key: string) => {
await space.indexDelete(pageName, key);
},
});

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import { Editor } from "../editor";
import { PageMeta } from "../types";
export default (editor: Editor) => ({
"space.listPages": (): PageMeta[] => {
return [...editor.viewState.allPages];
},
"space.readPage": async (
name: string
): Promise<{ text: string; meta: PageMeta }> => {
return await editor.space.readPage(name);
},
"space.writePage": async (name: string, text: string): Promise<PageMeta> => {
return await editor.space.writePage(name, text);
},
"space.deletePage": async (name: string) => {
console.log("Clearing page index", name);
await editor.space.indexDeletePrefixForPage(name, "");
// If we're deleting the current page, navigate to the start page
if (editor.currentPage === name) {
await editor.navigate("start");
}
// Remove page from open pages in editor
editor.openPages.delete(name);
console.log("Deleting page");
await editor.space.deletePage(name);
},
});

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// @ts-ignore
let frameTest = document.getElementById("main-frame");
window.addEventListener("message", async (event) => {
let messageEvent = event as MessageEvent;
let data = messageEvent.data;
if (data.type === "iframe_event") {
// @ts-ignore
window.mainPlug.dispatchEvent(data.data.event, data.data.data);
}
});
export default {
"ui.update": function (doc: any) {
// frameTest.contentWindow.postMessage({
// type: "loadContent",
// doc: doc,
// });
},
};

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import * as plugbox from "../plugbox/types";
export type NuggetHook = {
commands: {
[key: string]: CommandDef;
};
};
export type Manifest = plugbox.Manifest<NuggetHook>;
export type PageMeta = {
name: string;
lastModified: number;
version?: number;
lastOpened?: number;
};
export type AppCommand = {
command: CommandDef;
run: (arg: any) => Promise<any>;
};
export const slashCommandRegexp = /\/[\w\-]*/;
export interface CommandDef {
// Function name to invoke
invoke: string;
// Bind to keyboard shortcut
key?: string;
mac?: string;
// If to show in slash invoked menu and if so, with what label
// should match slashCommandRegexp
slashCommand?: string;
}
export type Notification = {
id: number;
message: string;
date: Date;
};
export type AppViewState = {
currentPage?: string;
showPageNavigator: boolean;
showCommandPalette: boolean;
allPages: Set<PageMeta>;
commands: Map<string, AppCommand>;
notifications: Notification[];
};
export const initialViewState: AppViewState = {
showPageNavigator: false,
showCommandPalette: false,
allPages: new Set(),
commands: new Map(),
notifications: [],
};
export type Action =
| { type: "page-loaded"; name: string }
| { type: "pages-listed"; pages: Set<PageMeta> }
| { type: "start-navigate" }
| { type: "stop-navigate" }
| { type: "update-commands"; commands: Map<string, AppCommand> }
| { type: "show-palette" }
| { type: "hide-palette" }
| { type: "show-notification"; notification: Notification }
| { type: "dismiss-notification"; id: number };

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export function countWords(str: string): number {
var matches = str.match(/[\w\d\'\'-]+/gi);
return matches ? matches.length : 0;
}
export function readingTime(wordCount: number): number {
// 225 is average word reading speed for adults
return Math.ceil(wordCount / 225);
}
export function safeRun(fn: () => Promise<void>) {
fn().catch((e) => {
console.error(e);
});
}
export function isMacLike() {
return /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);
}
export function throttle(func: () => void, limit: number) {
let timer: any = null;
return function () {
if (!timer) {
timer = setTimeout(() => {
func();
timer = null;
}, limit);
}
};
}

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import { Editor } from "./editor";
import { safeRun } from "./util";

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