7 lines
361 B
JavaScript
7 lines
361 B
JavaScript
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import assertString from './util/assertString';
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export default function ltrim(str, chars) {
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assertString(str);
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#Escaping
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var pattern = chars ? new RegExp("^[".concat(chars.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), "]+"), 'g') : /^\s+/g;
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return str.replace(pattern, '');
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}
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