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Provide option to delete Deno namespace in worker (#2717)

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Kevin (Kun) "Kassimo" Qian 2019-08-05 04:23:41 -07:00 • committed by Ryan Dahl
parent aaa7a3eac4
commit ddee2dff14
18 changed files with 128 additions and 17 deletions
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20
js/os.ts
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@ -112,7 +112,10 @@ function sendStart(): msg.StartRes {
// This function bootstraps an environment within Deno, it is shared both by
// the runtime and the compiler environments.
// @internal
export function start(source?: string): msg.StartRes {
export function start(
preserveDenoNamespace = true,
source?: string
): msg.StartRes {
core.setAsyncHandler(handleAsyncMsgFromRust);
// First we send an empty `Start` message to let the privileged side know we
@ -124,9 +127,18 @@ export function start(source?: string): msg.StartRes {
setGlobals(startResMsg.pid(), startResMsg.noColor(), startResMsg.execPath()!);
// Deno.core could ONLY be safely frozen here (not in globals.ts)
// since shared_queue.js will modify core properties.
Object.freeze(window.Deno.core);
if (preserveDenoNamespace) {
util.immutableDefine(window, "Deno", window.Deno);
// Deno.core could ONLY be safely frozen here (not in globals.ts)
// since shared_queue.js will modify core properties.
Object.freeze(window.Deno.core);
// core.sharedQueue is an object so we should also freeze it.
Object.freeze(window.Deno.core.sharedQueue);
} else {
// Remove window.Deno
delete window.Deno;
assert(window.Deno === undefined);
}
return startResMsg;
}