'use strict'; var GetIntrinsic = require('get-intrinsic'); var $TypeError = GetIntrinsic('%TypeError%'); var callBound = require('call-bind/callBound'); var $indexOf = callBound('String.prototype.indexOf'); var IsArray = require('./IsArray'); var IsIntegralNumber = require('./IsIntegralNumber'); var Type = require('./Type'); var WordCharacters = require('./WordCharacters'); var every = require('../helpers/every'); var isChar = function isChar(c) { return typeof c === 'string'; }; // https://262.ecma-international.org/12.0/#sec-runtime-semantics-iswordchar-abstract-operation // note: prior to ES2023, this AO erroneously omitted the latter of its arguments. module.exports = function IsWordChar(e, InputLength, Input, IgnoreCase, Unicode) { if (!IsIntegralNumber(e)) { throw new $TypeError('Assertion failed: `e` must be an integer'); } if (!IsIntegralNumber(InputLength)) { throw new $TypeError('Assertion failed: `InputLength` must be an integer'); } if (!IsArray(Input) || !every(Input, isChar)) { throw new $TypeError('Assertion failed: `Input` must be a List of characters'); } if (Type(IgnoreCase) !== 'Boolean' || Type(Unicode) !== 'Boolean') { throw new $TypeError('Assertion failed: `IgnoreCase` and `Unicode` must be booleans'); } if (e === -1 || e === InputLength) { return false; // step 1 } var c = Input[e]; // step 2 var wordChars = WordCharacters(IgnoreCase, Unicode); return $indexOf(wordChars, c) > -1; // steps 3-4 };