17 lines
382 B
TypeScript
17 lines
382 B
TypeScript
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const RegExpRule = /(\/?)(.+)\1([a-z]*)/;
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const FlagRule = /^(?!.*?(.).*?\1)[AJUXgimsux]+$/;
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export const parseRegex = (subject: string): RegExp => {
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const match = RegExpRule.exec(subject);
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if (!match) {
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throw new Error('Invalid RegExp.');
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}
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if (match[3] && !FlagRule.test(match[3])) {
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return new RegExp(subject);
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}
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return new RegExp(match[2], match[3]);
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};
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