Module @exodus/bytes/single-byte.js

Decode / encode the legacy single-byte encodings according to the Encoding standard (§9, §14.5), and unicode.org iso-8859-* mappings.

import { createSinglebyteDecoder, createSinglebyteEncoder } from '@exodus/bytes/single-byte.js'
import { windows1252toString, windows1252fromString } from '@exodus/bytes/single-byte.js'
import { latin1toString, latin1fromString } from '@exodus/bytes/single-byte.js'
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Supports all single-byte encodings listed in the WHATWG Encoding standard: ibm866, iso-8859-2, iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7, iso-8859-8, iso-8859-8-i, iso-8859-10, iso-8859-13, iso-8859-14, iso-8859-15, iso-8859-16, koi8-r, koi8-u, macintosh, windows-874, windows-1250, windows-1251, windows-1252, windows-1253, windows-1254, windows-1255, windows-1256, windows-1257, windows-1258, x-mac-cyrillic and x-user-defined.

Also supports iso-8859-1, iso-8859-9, iso-8859-11 as defined at unicode.org (and all other iso-8859-* encodings there as they match WHATWG).

> new TextDecoder('iso-8859-1').encoding
'windows-1252'
> new TextDecoder('iso-8859-9').encoding
'windows-1254'
> new TextDecoder('iso-8859-11').encoding
'windows-874'
> new TextDecoder('iso-8859-9').decode(Uint8Array.of(0x80, 0x81, 0xd0))
'€\x81Ğ' // this is actually decoded according to windows-1254 per TextDecoder spec
> createSinglebyteDecoder('iso-8859-9')(Uint8Array.of(0x80, 0x81, 0xd0))
'\x80\x81Ğ' // this is iso-8859-9 as defined at https://unicode.org/Public/MAPPINGS/ISO8859/8859-9.txt
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All WHATWG Encoding spec windows-* encodings are supersets of corresponding unicode.org encodings, meaning that they encode/decode all the old valid (non-replacement) strings / byte sequences identically, but can also support a wider range of inputs.