21 lines
463 B
JavaScript
21 lines
463 B
JavaScript
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var toString = Object.prototype.toString;
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function isRegExp (o) {
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return 'object' == typeof o
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&& '[object RegExp]' == toString.call(o);
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}
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module.exports = exports = function (regexp) {
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if (!isRegExp(regexp)) {
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throw new TypeError('Not a RegExp');
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}
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var flags = [];
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if (regexp.global) flags.push('g');
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if (regexp.multiline) flags.push('m');
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if (regexp.ignoreCase) flags.push('i');
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return new RegExp(regexp.source, flags.join(''));
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}
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