43 lines
1.1 KiB
TypeScript
43 lines
1.1 KiB
TypeScript
let RE_NOT_LETTER: RegExp;
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try {
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RE_NOT_LETTER = new RegExp('[^\\p{L}\\p{M}]+', 'ui');
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} catch (e) {
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// Support for older versions of firefox
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RE_NOT_LETTER = new RegExp('[^\\wа-яё]+', 'i');
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}
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export default function searchWords(haystack: string, needle: string | string[]) {
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if (!haystack || !needle) {
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return false;
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}
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const needleWords = typeof needle === 'string' ? needle.toLowerCase().split(RE_NOT_LETTER) : needle;
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const haystackLower = haystack.toLowerCase();
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// @optimization
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if (needleWords.length === 1 && !haystackLower.includes(needleWords[0])) {
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return false;
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}
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let haystackWords: string[];
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return needleWords.every((needleWord) => {
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if (!haystackLower.includes(needleWord)) {
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return false;
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}
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if (!haystackWords) {
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haystackWords = haystackLower.split(RE_NOT_LETTER);
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}
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return haystackWords.some((haystackWord) => haystackWord.startsWith(needleWord));
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});
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}
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export function prepareSearchWordsForNeedle(needle: string) {
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const needleWords = needle.toLowerCase().split(RE_NOT_LETTER);
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return (haystack: string) => searchWords(haystack, needleWords);
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}
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