40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
import { property } from '../object/property.mjs';
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import { matches } from '../predicate/matches.mjs';
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import { matchesProperty } from '../predicate/matchesProperty.mjs';
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function findIndex(arr, doesMatch, fromIndex = 0) {
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if (!arr) {
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return -1;
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}
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if (fromIndex < 0) {
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fromIndex = Math.max(arr.length + fromIndex, 0);
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}
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const subArray = Array.from(arr).slice(fromIndex);
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let index = -1;
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switch (typeof doesMatch) {
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case 'function': {
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index = subArray.findIndex(doesMatch);
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break;
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}
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case 'object': {
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if (Array.isArray(doesMatch) && doesMatch.length === 2) {
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const key = doesMatch[0];
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const value = doesMatch[1];
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index = subArray.findIndex(matchesProperty(key, value));
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}
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else {
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index = subArray.findIndex(matches(doesMatch));
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}
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break;
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}
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case 'number':
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case 'symbol':
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case 'string': {
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index = subArray.findIndex(property(doesMatch));
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}
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}
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return index === -1 ? -1 : index + fromIndex;
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}
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export { findIndex };
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