agsamantha/node_modules/entities/lib/decode_codepoint.js
2024-10-02 15:15:21 -05:00

76 lines
No EOL
2.3 KiB
JavaScript

"use strict";
// Adapted from https://github.com/mathiasbynens/he/blob/36afe179392226cf1b6ccdb16ebbb7a5a844d93a/src/he.js#L106-L134
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.replaceCodePoint = exports.fromCodePoint = void 0;
var decodeMap = new Map([
[0, 65533],
// C1 Unicode control character reference replacements
[128, 8364],
[130, 8218],
[131, 402],
[132, 8222],
[133, 8230],
[134, 8224],
[135, 8225],
[136, 710],
[137, 8240],
[138, 352],
[139, 8249],
[140, 338],
[142, 381],
[145, 8216],
[146, 8217],
[147, 8220],
[148, 8221],
[149, 8226],
[150, 8211],
[151, 8212],
[152, 732],
[153, 8482],
[154, 353],
[155, 8250],
[156, 339],
[158, 382],
[159, 376],
]);
/**
* Polyfill for `String.fromCodePoint`. It is used to create a string from a Unicode code point.
*/
exports.fromCodePoint =
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition, node/no-unsupported-features/es-builtins
(_a = String.fromCodePoint) !== null && _a !== void 0 ? _a : function (codePoint) {
var output = "";
if (codePoint > 0xffff) {
codePoint -= 0x10000;
output += String.fromCharCode(((codePoint >>> 10) & 0x3ff) | 0xd800);
codePoint = 0xdc00 | (codePoint & 0x3ff);
}
output += String.fromCharCode(codePoint);
return output;
};
/**
* Replace the given code point with a replacement character if it is a
* surrogate or is outside the valid range. Otherwise return the code
* point unchanged.
*/
function replaceCodePoint(codePoint) {
var _a;
if ((codePoint >= 0xd800 && codePoint <= 0xdfff) || codePoint > 0x10ffff) {
return 0xfffd;
}
return (_a = decodeMap.get(codePoint)) !== null && _a !== void 0 ? _a : codePoint;
}
exports.replaceCodePoint = replaceCodePoint;
/**
* Replace the code point if relevant, then convert it to a string.
*
* @deprecated Use `fromCodePoint(replaceCodePoint(codePoint))` instead.
* @param codePoint The code point to decode.
* @returns The decoded code point.
*/
function decodeCodePoint(codePoint) {
return (0, exports.fromCodePoint)(replaceCodePoint(codePoint));
}
exports.default = decodeCodePoint;
//# sourceMappingURL=decode_codepoint.js.map