Spaces:
Configuration error
Configuration error
; | |
var isFinite = require('../helpers/isFinite'); | |
var IsStrictlyEqual = require('./IsStrictlyEqual'); | |
var StringToBigInt = require('./StringToBigInt'); | |
var ToNumber = require('./ToNumber'); | |
var ToPrimitive = require('./ToPrimitive'); | |
var Type = require('./Type'); | |
// https://262.ecma-international.org/13.0/#sec-islooselyequal | |
module.exports = function IsLooselyEqual(x, y) { | |
var xType = Type(x); | |
var yType = Type(y); | |
if (xType === yType) { | |
return IsStrictlyEqual(x, y); | |
} | |
if (x == null && y == null) { | |
return true; | |
} | |
if (xType === 'Number' && yType === 'String') { | |
return IsLooselyEqual(x, ToNumber(y)); | |
} | |
if (xType === 'String' && yType === 'Number') { | |
return IsLooselyEqual(ToNumber(x), y); | |
} | |
if (xType === 'BigInt' && yType === 'String') { | |
var n = StringToBigInt(y); | |
if (typeof n === 'undefined') { | |
return false; | |
} | |
return IsLooselyEqual(x, n); | |
} | |
if (xType === 'String' && yType === 'BigInt') { | |
return IsLooselyEqual(y, x); | |
} | |
if (xType === 'Boolean') { | |
return IsLooselyEqual(ToNumber(x), y); | |
} | |
if (yType === 'Boolean') { | |
return IsLooselyEqual(x, ToNumber(y)); | |
} | |
if ((xType === 'String' || xType === 'Number' || xType === 'Symbol' || xType === 'BigInt') && yType === 'Object') { | |
return IsLooselyEqual(x, ToPrimitive(y)); | |
} | |
if (xType === 'Object' && (yType === 'String' || yType === 'Number' || yType === 'Symbol' || yType === 'BigInt')) { | |
return IsLooselyEqual(ToPrimitive(x), y); | |
} | |
if ((xType === 'BigInt' && yType === 'Number') || (xType === 'Number' && yType === 'BigInt')) { | |
if (!isFinite(x) || !isFinite(y)) { | |
return false; | |
} | |
// eslint-disable-next-line eqeqeq | |
return x == y; // shortcut for step 13.b. | |
} | |
return false; | |
}; | |