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4gray
1ab82b04a1
Supersedes #1252 and #872. uuid 14 is ESM-only, apps/web/jest.config.ts only kept v9 working by mapping `^uuid$` at a `wrapper.mjs` that v14 no longer ships, and the specifier also has to be synced in libs/shared/m3u-utils/package.json or @nx/dependency-checks fails lint. All four call sites only used `v4()`, so the dependency goes away instead. `createRandomId()` prefers `crypto.randomUUID()` and falls back to building the same v4 shape from `crypto.getRandomValues()` — that fallback is load-bearing, because randomUUID is only exposed in secure contexts and the self-hosted PWA is regularly served over plain http on a LAN address. getRandomValues stays available there, and it is what uuid's own v4 used. `@types/uuid` goes too; it only existed for the untyped v9 package.
44 lines
1.3 KiB
TypeScript
44 lines
1.3 KiB
TypeScript
/**
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* Random RFC 4122 v4 identifier used for playlist `_id` values, shared by the
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* renderer, the Electron backend and the web backend. Pure function — no
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* Angular/Node dependencies.
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*
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* `crypto.randomUUID()` is only exposed in secure contexts, and the
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* self-hosted PWA is regularly served over plain http on a LAN address. So the
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* fallback builds the same v4 shape from `crypto.getRandomValues()`, which
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* insecure contexts do expose. This mirrors what `uuid`'s `v4()` did before it
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* was dropped as a dependency.
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*/
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const HEX_BY_BYTE = Array.from({ length: 256 }, (_unused, byte) =>
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byte.toString(16).padStart(2, '0')
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);
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function randomUuidFromBytes(): string {
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const bytes = new Uint8Array(16);
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crypto.getRandomValues(bytes);
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// Version 4 and the RFC 4122 variant bits.
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bytes[6] = (bytes[6] & 0x0f) | 0x40;
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bytes[8] = (bytes[8] & 0x3f) | 0x80;
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const hex = Array.from(bytes, (byte) => HEX_BY_BYTE[byte]);
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return [
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hex.slice(0, 4).join(''),
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hex.slice(4, 6).join(''),
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hex.slice(6, 8).join(''),
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hex.slice(8, 10).join(''),
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hex.slice(10, 16).join(''),
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].join('-');
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}
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/** Returns a lowercase RFC 4122 v4 UUID. */
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export function createRandomId(): string {
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if (typeof crypto.randomUUID === 'function') {
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return crypto.randomUUID();
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}
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return randomUuidFromBytes();
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}
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