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perf(editor): avoid recreation of Intl.Segmenter (#10295)

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This commit is contained in:
doodlewind
2025-02-20 03:55:57 +00:00
parent c3fc0a0d88
commit b38abcb59c
1 changed files with 14 additions and 4 deletions
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18
blocksuite/affine/shared/src/viewport-renderer/text-utils.ts
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@@ -8,13 +8,22 @@ interface WordSegment {
const CJK_REGEX = /[\u4E00-\u9FFF\u3400-\u4DBF\uF900-\uFAFF]/u;
const sentenceSegmenter = new Intl.Segmenter(undefined, {
granularity: 'sentence',
});
const wordSegmenter = new Intl.Segmenter(undefined, {
granularity: 'word',
});
const graphemeSegmenter = new Intl.Segmenter(undefined, {
granularity: 'grapheme',
});
function hasCJK(text: string): boolean {
return CJK_REGEX.test(text);
}
function getWordSegments(text: string): WordSegment[] {
const granularity = hasCJK(text) ? 'grapheme' : 'word';
const segmenter = new Intl.Segmenter(undefined, { granularity });
const segmenter = hasCJK(text) ? graphemeSegmenter : wordSegmenter;
return Array.from(segmenter.segment(text)).map(({ segment, index }) => ({
text: segment,
start: index,
@@ -130,6 +139,7 @@ export function getSentenceRects(
}
export function segmentSentences(text: string): string[] {
const segmenter = new Intl.Segmenter(undefined, { granularity: 'sentence' });
return Array.from(segmenter.segment(text)).map(({ segment }) => segment);
return Array.from(sentenceSegmenter.segment(text)).map(
({ segment }) => segment
);
}