Created
September 30, 2022 14:12
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fast-deep-equal compiled JavaScript
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// Credit: https://github.com/epoberezkin/fast-deep-equal/blob/a8e7172b6c411ec320d6045fd4afbd2abc1b4bde/src/index.jst | |
module.exports = function equal(a, b) { | |
if (a === b) return true; | |
if (a && b && typeof a == 'object' && typeof b == 'object') { | |
if (a.constructor !== b.constructor) return false; | |
var length, i, keys; | |
if (Array.isArray(a)) { | |
length = a.length; | |
if (length != b.length) return false; | |
for (i = length; i-- !== 0;) | |
if (!equal(a[i], b[i])) return false; | |
return true; | |
} | |
if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags; | |
if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf(); | |
if (a.toString !== Object.prototype.toString) return a.toString() === b.toString(); | |
keys = Object.keys(a); | |
length = keys.length; | |
if (length !== Object.keys(b).length) return false; | |
for (i = length; i-- !== 0;) | |
if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false; | |
for (i = length; i-- !== 0;) { | |
var key = keys[i]; | |
if (!equal(a[key], b[key])) return false; | |
} | |
return true; | |
} | |
// true if both NaN, false otherwise | |
return a!==a && b!==b; | |
}; |
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