a collection of lightweight TypeScript packages for AT Protocol, the protocol powering Bluesky
atproto
bluesky
typescript
npm
refactor(uint8array): missing fast path for isUtf8LengthInRange in Node.js and Bun
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.changeset/large-nails-marry.md
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.changeset/large-nails-marry.md
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packages/misc/uint8array/lib/index.bun.ts
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packages/misc/uint8array/lib/index.bun.ts
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* @returns true if byte length is within [min, max]
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*/
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export const isUtf8LengthInRange = (str: string, min: number, max: number): boolean => {
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const len = _byteLength(str, 'utf8');
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return len >= min && len <= max;
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const len = str.length;
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// fast path: if max possible UTF-8 length is below min, fail
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if (len * 3 < min) {
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return false;
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}
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// fast path: if UTF-16 length satisfies min and max possible satisfies max
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if (len >= min && len * 3 <= max) {
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return true;
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}
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+
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const utf8len = _byteLength(str, 'utf8');
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return utf8len >= min && utf8len <= max;
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};
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export const toSha256 = async (buffer: Uint8Array): Promise<Uint8Array<ArrayBuffer>> => {
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packages/misc/uint8array/lib/index.node.ts
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packages/misc/uint8array/lib/index.node.ts
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* @returns true if byte length is within [min, max]
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*/
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export const isUtf8LengthInRange = (str: string, min: number, max: number): boolean => {
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const len = _byteLength(str, 'utf8');
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return len >= min && len <= max;
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const len = str.length;
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+
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// fast path: if max possible UTF-8 length is below min, fail
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+
if (len * 3 < min) {
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return false;
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}
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+
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// fast path: if UTF-16 length satisfies min and max possible satisfies max
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if (len >= min && len * 3 <= max) {
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return true;
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}
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+
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const utf8len = _byteLength(str, 'utf8');
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return utf8len >= min && utf8len <= max;
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};
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export const toSha256 = async (buffer: Uint8Array): Promise<Uint8Array<ArrayBuffer>> => {