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@zag-js/highlight-word

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Highlight a portion of text in a string

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// src/highlight-first.ts import { normalizeSpan } from "./normalize-span.mjs"; import { escapeRegex } from "./escape-regex.mjs"; function highlightFirst(props) { const { text, query, ignoreCase, exactMatch } = props; if (exactMatch) { const escapedQuery = escapeRegex(query); const regex = new RegExp(`\\b(${escapedQuery})\\b`, ignoreCase ? "i" : ""); const match = text.match(regex); if (!match || match.index === void 0) { return [{ text, match: false }]; } const start2 = match.index; const end2 = start2 + match[0].length; const spans2 = [{ start: start2, end: end2 }]; return normalizeSpan(spans2, text.length).map((chunk) => ({ text: text.slice(chunk.start, chunk.end), match: !!chunk.match })); } const searchText = ignoreCase ? text.toLowerCase() : text; const searchQuery = ignoreCase ? typeof query === "string" ? query.toLowerCase() : query : query; const start = typeof searchText === "string" ? searchText.indexOf(searchQuery) : -1; if (start === -1) { return [{ text, match: false }]; } const end = start + searchQuery.length; const spans = [{ start, end }]; return normalizeSpan(spans, text.length).map((chunk) => ({ text: text.slice(chunk.start, chunk.end), match: !!chunk.match })); } export { highlightFirst };