51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
// Validate `encoding` option
|
|
export const validateEncoding = ({encoding}) => {
|
|
if (ENCODINGS.has(encoding)) {
|
|
return;
|
|
}
|
|
|
|
const correctEncoding = getCorrectEncoding(encoding);
|
|
if (correctEncoding !== undefined) {
|
|
throw new TypeError(`Invalid option \`encoding: ${serializeEncoding(encoding)}\`.
|
|
Please rename it to ${serializeEncoding(correctEncoding)}.`);
|
|
}
|
|
|
|
const correctEncodings = [...ENCODINGS].map(correctEncoding => serializeEncoding(correctEncoding)).join(', ');
|
|
throw new TypeError(`Invalid option \`encoding: ${serializeEncoding(encoding)}\`.
|
|
Please rename it to one of: ${correctEncodings}.`);
|
|
};
|
|
|
|
const TEXT_ENCODINGS = new Set(['utf8', 'utf16le']);
|
|
export const BINARY_ENCODINGS = new Set(['buffer', 'hex', 'base64', 'base64url', 'latin1', 'ascii']);
|
|
const ENCODINGS = new Set([...TEXT_ENCODINGS, ...BINARY_ENCODINGS]);
|
|
|
|
const getCorrectEncoding = encoding => {
|
|
if (encoding === null) {
|
|
return 'buffer';
|
|
}
|
|
|
|
if (typeof encoding !== 'string') {
|
|
return;
|
|
}
|
|
|
|
const lowerEncoding = encoding.toLowerCase();
|
|
if (lowerEncoding in ENCODING_ALIASES) {
|
|
return ENCODING_ALIASES[lowerEncoding];
|
|
}
|
|
|
|
if (ENCODINGS.has(lowerEncoding)) {
|
|
return lowerEncoding;
|
|
}
|
|
};
|
|
|
|
const ENCODING_ALIASES = {
|
|
// eslint-disable-next-line unicorn/text-encoding-identifier-case
|
|
'utf-8': 'utf8',
|
|
'utf-16le': 'utf16le',
|
|
'ucs-2': 'utf16le',
|
|
ucs2: 'utf16le',
|
|
binary: 'latin1',
|
|
};
|
|
|
|
const serializeEncoding = encoding => typeof encoding === 'string' ? `"${encoding}"` : String(encoding);
|