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52 lines
1.2 KiB
52 lines
1.2 KiB
import {
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hasOwn
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} from 'uni-shared'
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const isArray = Array.isArray
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const keyList = Object.keys
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export default function equal (a, b) {
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if (a === b) return true
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if (a && b && typeof a === 'object' && typeof b === 'object') {
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const arrA = isArray(a)
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const arrB = isArray(b)
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let i, length, key
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if (arrA && arrB) {
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length = a.length
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if (length !== b.length) return false
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for (i = length; i-- !== 0;) {
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if (!equal(a[i], b[i])) return false
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}
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return true
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}
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if (arrA !== arrB) return false
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const dateA = a instanceof Date
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const dateB = b instanceof Date
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if (dateA !== dateB) return false
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if (dateA && dateB) return a.getTime() === b.getTime()
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const regexpA = a instanceof RegExp
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const regexpB = b instanceof RegExp
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if (regexpA !== regexpB) return false
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if (regexpA && regexpB) return a.toString() === b.toString()
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const keys = keyList(a)
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length = keys.length
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if (length !== keyList(b).length) {
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return false
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}
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for (i = length; i-- !== 0;) {
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if (!hasOwn.call(b, keys[i])) return false
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}
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for (i = length; i-- !== 0;) {
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key = keys[i]
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if (!equal(a[key], b[key])) return false
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}
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return true
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}
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return false
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}
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