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d47147fb6a
This commit moves "deno_std/node" in "ext/node" crate. The code is transpiled and snapshotted during the build process. During the first pass a minimal amount of work was done to create the snapshot, a lot of code in "ext/node" depends on presence of "Deno" global. This code will be gradually fixed in the follow up PRs to migrate it to import relevant APIs from "internal:" modules. Currently the code from snapshot is not used in any way, and all Node/npm compatibility still uses code from "https://deno.land/std/node" (or from the location specified by "DENO_NODE_COMPAT_URL"). This will also be handled in a follow up PRs. --------- Co-authored-by: crowlkats <crowlkats@toaxl.com> Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com> Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>
84 lines
2.1 KiB
TypeScript
84 lines
2.1 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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import randomBytes, {
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MAX_SIZE as kMaxUint32,
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} from "internal:deno_node/polyfills/internal/crypto/_randomBytes.ts";
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import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
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const kBufferMaxLength = 0x7fffffff;
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function assertOffset(offset: number, length: number) {
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if (offset > kMaxUint32 || offset < 0) {
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throw new TypeError("offset must be a uint32");
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}
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if (offset > kBufferMaxLength || offset > length) {
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throw new RangeError("offset out of range");
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}
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}
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function assertSize(size: number, offset: number, length: number) {
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if (size > kMaxUint32 || size < 0) {
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throw new TypeError("size must be a uint32");
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}
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if (size + offset > length || size > kBufferMaxLength) {
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throw new RangeError("buffer too small");
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}
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}
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export default function randomFill(
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buf: Buffer,
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cb: (err: Error | null, buf: Buffer) => void,
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): void;
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export default function randomFill(
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buf: Buffer,
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offset: number,
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cb: (err: Error | null, buf: Buffer) => void,
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): void;
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export default function randomFill(
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buf: Buffer,
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offset: number,
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size: number,
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cb: (err: Error | null, buf: Buffer) => void,
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): void;
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export default function randomFill(
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buf: Buffer,
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offset?: number | ((err: Error | null, buf: Buffer) => void),
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size?: number | ((err: Error | null, buf: Buffer) => void),
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cb?: (err: Error | null, buf: Buffer) => void,
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) {
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if (typeof offset === "function") {
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cb = offset;
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offset = 0;
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size = buf.length;
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} else if (typeof size === "function") {
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cb = size;
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size = buf.length - Number(offset as number);
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}
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assertOffset(offset as number, buf.length);
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assertSize(size as number, offset as number, buf.length);
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randomBytes(size as number, (err, bytes) => {
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if (err) return cb!(err, buf);
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bytes?.copy(buf, offset as number);
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cb!(null, buf);
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});
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}
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export function randomFillSync(buf: Buffer, offset = 0, size?: number) {
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assertOffset(offset, buf.length);
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if (size === undefined) size = buf.length - offset;
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assertSize(size, offset, buf.length);
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const bytes = randomBytes(size);
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bytes.copy(buf, offset);
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return buf;
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}
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