29 lines
941 B
TypeScript
29 lines
941 B
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/**
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* Template string function that can be used to dedent the resulting
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* string literal. The smallest common indentation will be omitted.
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*/
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export function dedent(strings: TemplateStringsArray, ...values: any[]) {
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let joinedString = '';
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for (let i = 0; i < values.length; i++) {
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joinedString += `${strings[i]}${values[i]}`;
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}
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joinedString += strings[strings.length - 1];
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const matches = joinedString.match(/^[ \t]*(?=\S)/gm);
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if (matches === null) {
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return joinedString;
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}
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const minLineIndent = Math.min(...matches.map(el => el.length));
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const omitMinIndentRegex = new RegExp(`^[ \\t]{${minLineIndent}}`, 'gm');
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return minLineIndent > 0 ? joinedString.replace(omitMinIndentRegex, '') : joinedString;
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}
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