Andras Schmelczer
9d99a4ac23
Move error classes from services/ and file-operations/ into a new errors/ directory (authentication-error, server-version-mismatch-error, sync-reset-error, file-not-found-error), plus add file-already-exists-error and http-client-error. Update consts.ts and utils/* (await-all, create-client-id, hash, rate-limit, find-matching-file). Replace data-structures (locks, min-covered, event-listeners, fix-sized-cache) and add debugging utilities (in-memory-file-system, log-to-console, slow-web-socket-factory). Removes utils/create-promise.ts.
14 lines
751 B
TypeScript
14 lines
751 B
TypeScript
export async function hash(content: Uint8Array): Promise<string> {
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// Re-wrap into a fresh Uint8Array<ArrayBuffer> so SubtleCrypto's
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// BufferSource overload accepts it without an unsafe type assertion.
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// The lib types require an ArrayBuffer-backed view; the source may
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// be backed by SharedArrayBuffer in some runtimes.
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const buffer = new ArrayBuffer(content.byteLength);
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new Uint8Array(buffer).set(content);
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const digest = await crypto.subtle.digest("SHA-256", buffer);
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const bytes = new Uint8Array(digest);
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return Array.from(bytes, (b) => b.toString(16).padStart(2, "0")).join("");
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}
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// SHA-256 of empty content, computed once at import time
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export const EMPTY_HASH: Promise<string> = hash(new Uint8Array());
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