mirror of
https://github.com/denoland/deno.git
synced 2024-12-13 02:52:54 -05:00
72fe9bb470
This commit renames "deno_core::InternalModuleLoader" to "ExtModuleLoader" and changes the specifiers used by the modules loaded from this loader to "ext:". "internal:" scheme was really ambiguous and it's more characters than "ext:", which should result in slightly smaller snapshot size. Closes https://github.com/denoland/deno/issues/18020
70 lines
1.8 KiB
TypeScript
70 lines
1.8 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
|
|
import { Buffer } from "ext:deno_node/buffer.ts";
|
|
|
|
export const MAX_RANDOM_VALUES = 65536;
|
|
export const MAX_SIZE = 4294967295;
|
|
|
|
function generateRandomBytes(size: number) {
|
|
if (size > MAX_SIZE) {
|
|
throw new RangeError(
|
|
`The value of "size" is out of range. It must be >= 0 && <= ${MAX_SIZE}. Received ${size}`,
|
|
);
|
|
}
|
|
|
|
const bytes = Buffer.allocUnsafe(size);
|
|
|
|
//Work around for getRandomValues max generation
|
|
if (size > MAX_RANDOM_VALUES) {
|
|
for (let generated = 0; generated < size; generated += MAX_RANDOM_VALUES) {
|
|
globalThis.crypto.getRandomValues(
|
|
bytes.slice(generated, generated + MAX_RANDOM_VALUES),
|
|
);
|
|
}
|
|
} else {
|
|
globalThis.crypto.getRandomValues(bytes);
|
|
}
|
|
|
|
return bytes;
|
|
}
|
|
|
|
/**
|
|
* @param size Buffer length, must be equal or greater than zero
|
|
*/
|
|
export default function randomBytes(size: number): Buffer;
|
|
export default function randomBytes(
|
|
size: number,
|
|
cb?: (err: Error | null, buf?: Buffer) => void,
|
|
): void;
|
|
export default function randomBytes(
|
|
size: number,
|
|
cb?: (err: Error | null, buf?: Buffer) => void,
|
|
): Buffer | void {
|
|
if (typeof cb === "function") {
|
|
let err: Error | null = null, bytes: Buffer;
|
|
try {
|
|
bytes = generateRandomBytes(size);
|
|
} catch (e) {
|
|
//NodeJS nonsense
|
|
//If the size is out of range it will throw sync, otherwise throw async
|
|
if (
|
|
e instanceof RangeError &&
|
|
e.message.includes('The value of "size" is out of range')
|
|
) {
|
|
throw e;
|
|
} else if (e instanceof Error) {
|
|
err = e;
|
|
} else {
|
|
err = new Error("[non-error thrown]");
|
|
}
|
|
}
|
|
setTimeout(() => {
|
|
if (err) {
|
|
cb(err);
|
|
} else {
|
|
cb(null, bytes);
|
|
}
|
|
}, 0);
|
|
} else {
|
|
return generateRandomBytes(size);
|
|
}
|
|
}
|