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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
// This module is the entry point for "main" isolate, ie. the one
// that is created when you run "deno" executable.
//
// It provides a single function that should be called by Rust:
// - `bootstrapMainRuntime` - must be called once, when Isolate is created.
// It sets up runtime by providing globals for `WindowScope` and adds `Deno` global.
import * as Deno from "./deno.ts";
import * as domTypes from "./web/dom_types.ts";
import * as csprng from "./ops/get_random_values.ts";
import {
readOnly,
writable,
windowOrWorkerGlobalScopeMethods,
windowOrWorkerGlobalScopeProperties,
eventTargetProperties
} from "./globals.ts";
import { internalObject } from "./internals.ts";
import { setSignals } from "./signals.ts";
import { replLoop } from "./repl.ts";
import { LocationImpl } from "./web/location.ts";
import * as runtime from "./runtime.ts";
import { symbols } from "./symbols.ts";
import { log, immutableDefine } from "./util.ts";
// TODO: factor out `Deno` global assignment to separate function
// Add internal object to Deno object.
// This is not exposed as part of the Deno types.
// @ts-ignore
Deno[symbols.internal] = internalObject;
export const mainRuntimeGlobalProperties = {
window: readOnly(globalThis),
self: readOnly(globalThis),
crypto: readOnly(csprng),
// TODO(bartlomieju): from MDN docs (https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope)
// it seems those two properties should be availble to workers as well
onload: writable(undefined),
onunload: writable(undefined)
};
let hasBootstrapped = false;
export function bootstrapMainRuntime(): void {
if (hasBootstrapped) {
throw new Error("Worker runtime already bootstrapped");
}
log("bootstrapMainRuntime");
hasBootstrapped = true;
Object.defineProperties(globalThis, windowOrWorkerGlobalScopeMethods);
Object.defineProperties(globalThis, windowOrWorkerGlobalScopeProperties);
Object.defineProperties(globalThis, eventTargetProperties);
Object.defineProperties(globalThis, mainRuntimeGlobalProperties);
// Registers the handler for window.onload function.
globalThis.addEventListener("load", (e: domTypes.Event): void => {
const { onload } = globalThis;
if (typeof onload === "function") {
onload(e);
}
});
// Registers the handler for window.onunload function.
globalThis.addEventListener("unload", (e: domTypes.Event): void => {
const { onunload } = globalThis;
if (typeof onunload === "function") {
onunload(e);
}
});
const s = runtime.start();
const location = new LocationImpl(s.location);
immutableDefine(globalThis, "location", location);
Object.freeze(globalThis.location);
Object.defineProperties(Deno, {
pid: readOnly(s.pid),
noColor: readOnly(s.noColor),
args: readOnly(Object.freeze(s.args))
});
// Setup `Deno` global - we're actually overriding already
// existing global `Deno` with `Deno` namespace from "./deno.ts".
immutableDefine(globalThis, "Deno", Deno);
Object.freeze(globalThis.Deno);
Object.freeze(globalThis.Deno.core);
Object.freeze(globalThis.Deno.core.sharedQueue);
setSignals();
log("cwd", s.cwd);
log("args", Deno.args);
if (s.repl) {
replLoop();
}
}
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