a collection of lightweight TypeScript packages for AT Protocol, the protocol powering Bluesky
atproto
bluesky
typescript
npm
feat(uint8array): attempt fast-path ascii-only decoding for small strings
+40
-2
+5
.changeset/five-readers-hear.md
+5
.changeset/five-readers-hear.md
+35
-2
packages/utilities/uint8array/lib/index.ts
+35
-2
packages/utilities/uint8array/lib/index.ts
···
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return result.written;
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};
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+
const fromCharCode = String.fromCharCode;
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+
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/**
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* decodes a UTF-8 string from a buffer
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*/
···
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buffer = from.subarray(offset, offset + length);
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}
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-
const result = textDecoder.decode(buffer);
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const end = buffer.length;
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if (end > 24) {
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return textDecoder.decode(buffer);
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}
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+
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{
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let str = '';
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let idx = 0;
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+
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for (; idx + 3 < end; idx += 4) {
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const a = buffer[idx];
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const b = buffer[idx + 1];
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const c = buffer[idx + 2];
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const d = buffer[idx + 3];
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+
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if ((a | b | c | d) & 0x80) {
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return str + textDecoder.decode(buffer.subarray(idx));
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}
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str += fromCharCode(a, b, c, d);
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}
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for (; idx < end; idx++) {
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const x = buffer[idx];
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-
return result;
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if (x & 0x80) {
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return str + textDecoder.decode(buffer.subarray(idx));
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}
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+
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str += fromCharCode(x);
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}
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+
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return str;
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}
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};
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/**