Sha256: 743240d77b6ebc7342ffa453c208c354b2520b5fe99772a7cb123436bfc4e035
Contents?: true
Size: 1.11 KB
Versions: 54
Compression:
Stored size: 1.11 KB
Contents
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var IsArray = require('./IsArray');
var IsInteger = require('./IsInteger');
var every = require('../helpers/every');
var regexTester = require('safe-regex-test');
var isChar = function isChar(c) {
return typeof c === 'string' && c.length === 1;
};
var isWordCharacter = regexTester(/^[a-zA-Z0-9_]$/);
// https://262.ecma-international.org/6.0/#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) {
if (!IsInteger(e)) {
throw new $TypeError('Assertion failed: `e` must be an integer');
}
if (!IsInteger(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 (e === -1 || e === InputLength) {
return false; // step 1
}
var c = Input[e]; // step 2
return isWordCharacter(c); // steps 3-4
};
Version data entries
54 entries across 27 versions & 2 rubygems