bun.sh/docs/guides/binary/arraybuffer-to-string.md

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Convert an ArrayBuffer to a string

Bun implements the Web-standard TextDecoder class for converting between binary data types and strings.

const buf = new ArrayBuffer(64);
const decoder = new TextDecoder();
const str = decoder.decode(buf);

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See Docs > API > Binary Data for complete documentation on manipulating binary data with Bun.