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// Removes the `__proto__` for security reasons. This intentionally makes
// Deno non compliant with ECMA-262 Annex B.2.2.1
//
// eslint-disable-next-line @typescript-eslint/no-explicit-any
delete Object.prototype.__proto__;
((window) => {
const core = Deno.core;
const util = window.__bootstrap.util;
const eventTarget = window.__bootstrap.eventTarget;
const dispatchJson = window.__bootstrap.dispatchJson;
const build = window.__bootstrap.build;
const version = window.__bootstrap.version;
const errorStack = window.__bootstrap.errorStack;
const Console = window.__bootstrap.console.Console;
const worker = window.__bootstrap.worker;
const { internalSymbol, internalObject } = window.__bootstrap.internals;
const performance = window.__bootstrap.performance;
const crypto = window.__bootstrap.crypto;
const denoNs = window.__bootstrap.denoNs;
const encoder = new TextEncoder();
function workerClose() {
if (isClosing) {
return;
}
isClosing = true;
opCloseWorker();
}
// TODO(bartlomieju): remove these funtions
// Stuff for workers
const onmessage = () => {};
const onerror = () => {};
function postMessage(data) {
const dataJson = JSON.stringify(data);
const dataIntArray = encoder.encode(dataJson);
opPostMessage(dataIntArray);
}
let isClosing = false;
async function workerMessageRecvCallback(data) {
const msgEvent = new worker.MessageEvent("message", {
cancelable: false,
data,
});
try {
if (globalThis["onmessage"]) {
const result = globalThis.onmessage(msgEvent);
if (result && "then" in result) {
await result;
}
}
globalThis.dispatchEvent(msgEvent);
} catch (e) {
let handled = false;
const errorEvent = new ErrorEvent("error", {
cancelable: true,
message: e.message,
lineno: e.lineNumber ? e.lineNumber + 1 : undefined,
colno: e.columnNumber ? e.columnNumber + 1 : undefined,
filename: e.fileName,
error: null,
});
if (globalThis["onerror"]) {
const ret = globalThis.onerror(
e.message,
e.fileName,
e.lineNumber,
e.columnNumber,
e,
);
handled = ret === true;
}
globalThis.dispatchEvent(errorEvent);
if (errorEvent.defaultPrevented) {
handled = true;
}
if (!handled) {
throw e;
}
}
}
function opPostMessage(data) {
dispatchJson.sendSync("op_worker_post_message", {}, data);
}
function opCloseWorker() {
dispatchJson.sendSync("op_worker_close");
}
function opStart() {
return dispatchJson.sendSync("op_start");
}
// TODO(bartlomieju): temporary solution, must be fixed when moving
// dispatches to separate crates
function initOps() {
const opsMap = core.ops();
for (const [_name, opId] of Object.entries(opsMap)) {
core.setAsyncHandler(opId, dispatchJson.asyncMsgFromRust);
}
}
function runtimeStart(source) {
initOps();
// First we send an empty `Start` message to let the privileged side know we
// are ready. The response should be a `StartRes` message containing the CLI
// args and other info.
const s = opStart();
version.setVersions(s.denoVersion, s.v8Version, s.tsVersion);
build.setBuildInfo(s.target);
util.setLogDebug(s.debugFlag, source);
errorStack.setPrepareStackTrace(Error);
return s;
}
// Other properties shared between WindowScope and WorkerGlobalScope
const windowOrWorkerGlobalScopeProperties = {
console: util.writable(new Console(core.print)),
crypto: util.readOnly(crypto),
CustomEvent: util.nonEnumerable(CustomEvent),
ErrorEvent: util.nonEnumerable(ErrorEvent),
Event: util.nonEnumerable(Event),
EventTarget: util.nonEnumerable(EventTarget),
performance: util.writable(new performance.Performance()),
Performance: util.nonEnumerable(performance.Performance),
PerformanceEntry: util.nonEnumerable(performance.PerformanceEntry),
PerformanceMark: util.nonEnumerable(performance.PerformanceMark),
PerformanceMeasure: util.nonEnumerable(performance.PerformanceMeasure),
TextDecoder: util.nonEnumerable(TextDecoder),
TextEncoder: util.nonEnumerable(TextEncoder),
Worker: util.nonEnumerable(worker.Worker),
};
const eventTargetProperties = {
addEventListener: util.readOnly(
EventTarget.prototype.addEventListener,
),
dispatchEvent: util.readOnly(EventTarget.prototype.dispatchEvent),
removeEventListener: util.readOnly(
EventTarget.prototype.removeEventListener,
),
};
const workerRuntimeGlobalProperties = {
self: util.readOnly(globalThis),
onmessage: util.writable(onmessage),
onerror: util.writable(onerror),
// TODO: should be readonly?
close: util.nonEnumerable(workerClose),
postMessage: util.writable(postMessage),
workerMessageRecvCallback: util.nonEnumerable(workerMessageRecvCallback),
};
let hasBootstrapped = false;
function bootstrapWorkerRuntime(name, useDenoNamespace, internalName) {
if (hasBootstrapped) {
throw new Error("Worker runtime already bootstrapped");
}
// Remove bootstrapping methods from global scope
globalThis.__bootstrap = undefined;
globalThis.bootstrap = undefined;
util.log("bootstrapWorkerRuntime");
hasBootstrapped = true;
Object.defineProperties(globalThis, windowOrWorkerGlobalScopeProperties);
Object.defineProperties(globalThis, workerRuntimeGlobalProperties);
Object.defineProperties(globalThis, eventTargetProperties);
Object.defineProperties(globalThis, { name: util.readOnly(name) });
eventTarget.setEventTargetData(globalThis);
const { noColor, args } = runtimeStart(
internalName ?? name,
);
const finalDenoNs = {
core,
internal: internalSymbol,
[internalSymbol]: internalObject,
...denoNs,
};
if (useDenoNamespace) {
Object.defineProperties(finalDenoNs, {
noColor: util.readOnly(noColor),
args: util.readOnly(Object.freeze(args)),
});
// Setup `Deno` global - we're actually overriding already
// existing global `Deno` with `Deno` namespace from "./deno.ts".
util.immutableDefine(globalThis, "Deno", finalDenoNs);
Object.freeze(globalThis.Deno);
Object.freeze(globalThis.Deno.core);
Object.freeze(globalThis.Deno.core.sharedQueue);
} else {
delete globalThis.Deno;
util.assert(globalThis.Deno === undefined);
}
}
Object.defineProperties(globalThis, {
bootstrap: {
value: {
workerRuntime: bootstrapWorkerRuntime,
},
configurable: true,
writable: true,
},
});
})(this);
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