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33 lines
757 B
33 lines
757 B
5 years ago
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'use strict';
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// MODULES //
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var isString = require( 'validate.io-string-primitive' ),
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RE = require( 'regex-regex' );
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// REGEX //
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/**
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* FUNCTION: regex( str )
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* Parses a regular expression string and returns a new regular expression.
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*
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* @param {String} str - regular expression string
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* @returns {RegExp|Null} regular expression or null
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*/
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function regex( str ) {
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if ( !isString( str ) ) {
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throw new TypeError( 'invalid input argument. Must provide a regular expression string. Value: `' + str + '`.' );
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}
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// Capture the regular expression pattern and any flags:
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str = RE.exec( str );
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// Create a new regular expression:
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return ( str ) ? new RegExp( str[1], str[2] ) : null;
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} // end FUNCTION regex()
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// EXPORTS //
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module.exports = regex;
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