34 lines
1003 B
TypeScript
34 lines
1003 B
TypeScript
// Copyright 2021-2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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declare namespace Intl {
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type SegmenterOptions = {
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granularity?: 'grapheme' | 'word' | 'sentence';
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};
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type SegmentData = {
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index: number;
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input: string;
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segment: string;
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// According to [the proposal][0], `isWordLike` is a boolean when `granularity` is
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// "word" and undefined otherwise. There may be a more rigid way to enforce this
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// with TypeScript, but an optional property is okay for now.
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//
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// [0]: https://github.com/tc39/proposal-intl-segmenter/blob/e5f982f51cef810111dfeab835d6a934a7cae045/README.md
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isWordLike?: boolean;
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};
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type Segments = {
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containing(index: number): SegmentData;
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[Symbol.iterator](): Iterator<SegmentData>;
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};
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// `Intl.Segmenter` is not yet in TypeScript's type definitions, so we add it.
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class Segmenter {
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constructor(locale?: string, options?: SegmenterOptions);
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segment(str: string): Segments;
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}
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}
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