Sha256: f03ff65c29dc44467e67fea551503c18c972a45d86a020fcce2d97afbf89634d
Contents?: true
Size: 1.53 KB
Versions: 162
Compression:
Stored size: 1.53 KB
Contents
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var callBound = require('call-bind/callBound');
var $indexOf = callBound('String.prototype.indexOf', true);
var Canonicalize = require('./Canonicalize');
var Type = require('./Type');
var caseFolding = require('../helpers/caseFolding');
var forEach = require('../helpers/forEach');
var OwnPropertyKeys = require('../helpers/OwnPropertyKeys');
var A = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_'; // step 1
// https://262.ecma-international.org/8.0/#sec-runtime-semantics-wordcharacters-abstract-operation
module.exports = function WordCharacters(IgnoreCase, Unicode) {
if (Type(IgnoreCase) !== 'Boolean' || Type(Unicode) !== 'Boolean') {
throw new $TypeError('Assertion failed: `IgnoreCase` and `Unicode` must be booleans');
}
var U = '';
forEach(OwnPropertyKeys(caseFolding.C), function (c) {
if (
$indexOf(A, c) === -1 // c not in A
&& $indexOf(A, Canonicalize(c, IgnoreCase, Unicode)) > -1 // canonicalized c IS in A
) {
U += caseFolding.C[c]; // step 3
}
});
forEach(OwnPropertyKeys(caseFolding.S), function (c) {
if (
$indexOf(A, c) === -1 // c not in A
&& $indexOf(A, Canonicalize(c, IgnoreCase, Unicode)) > -1 // canonicalized c IS in A
) {
U += caseFolding.S[c]; // step 3
}
});
if ((!Unicode || !IgnoreCase) && U.length > 0) {
throw new $TypeError('Assertion failed: `U` must be empty when `IgnoreCase` and `Unicode` are not both true'); // step 4
}
return A + U; // step 5, 6
};
Version data entries
162 entries across 27 versions & 2 rubygems