59 lines
1.6 KiB
TypeScript
59 lines
1.6 KiB
TypeScript
import { isArray, isDate, isObject, isSymbol } from './'
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function looseCompareArrays(a: any[], b: any[]) {
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if (a.length !== b.length) return false
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let equal = true
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for (let i = 0; equal && i < a.length; i++) {
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equal = looseEqual(a[i], b[i])
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}
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return equal
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}
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export function looseEqual(a: any, b: any): boolean {
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if (a === b) return true
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let aValidType = isDate(a)
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let bValidType = isDate(b)
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if (aValidType || bValidType) {
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return aValidType && bValidType ? a.getTime() === b.getTime() : false
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}
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aValidType = isSymbol(a)
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bValidType = isSymbol(b)
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if (aValidType || bValidType) {
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return a === b
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}
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aValidType = isArray(a)
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bValidType = isArray(b)
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if (aValidType || bValidType) {
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return aValidType && bValidType ? looseCompareArrays(a, b) : false
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}
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aValidType = isObject(a)
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bValidType = isObject(b)
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if (aValidType || bValidType) {
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/* istanbul ignore if: this if will probably never be called */
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if (!aValidType || !bValidType) {
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return false
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}
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const aKeysCount = Object.keys(a).length
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const bKeysCount = Object.keys(b).length
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if (aKeysCount !== bKeysCount) {
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return false
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}
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for (const key in a) {
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const aHasKey = a.hasOwnProperty(key)
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const bHasKey = b.hasOwnProperty(key)
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if (
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(aHasKey && !bHasKey) ||
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(!aHasKey && bHasKey) ||
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!looseEqual(a[key], b[key])
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) {
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return false
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}
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}
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}
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return String(a) === String(b)
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}
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export function looseIndexOf(arr: any[], val: any): number {
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return arr.findIndex(item => looseEqual(item, val))
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}
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