Function isSinglebyteEncoding

lib/internal/encoding/single-byte.js:103–103

(enc)

const supported = new SafeSet(it(ObjectKeys(encodings))).add('iso-8859-8-i').add('x-user-defined');
const isSinglebyteEncoding = (enc) => supported.has(enc);

const decodersLoose = new SafeMap();
const decodersFatal = new SafeMap();