32 lines
814 B
JavaScript
32 lines
814 B
JavaScript
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import {getCategory, isAmbiguous, isFullWidth, isWide} from './lookup.js';
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function validate(codePoint) {
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if (!Number.isSafeInteger(codePoint)) {
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throw new TypeError(`Expected a code point, got \`${typeof codePoint}\`.`);
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}
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}
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export function eastAsianWidthType(codePoint) {
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validate(codePoint);
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return getCategory(codePoint);
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}
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export function eastAsianWidth(codePoint, {ambiguousAsWide = false} = {}) {
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validate(codePoint);
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if (
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isFullWidth(codePoint)
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|| isWide(codePoint)
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|| (ambiguousAsWide && isAmbiguous(codePoint))
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) {
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return 2;
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}
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return 1;
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}
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// For Prettier. This doesn't count "ambiguous" characters or check for valid input.
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// https://github.com/sindresorhus/get-east-asian-width/pull/6
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export const _isNarrowWidth = codePoint => !(isFullWidth(codePoint) || isWide(codePoint));
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