Last change
on this file since 6c1585f was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
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1 | 'use strict';
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2 |
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3 | var regexParser = require('regex-parser');
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4 |
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5 | var REGEXP = /(\/?)(.+)\1([a-z]*)/i;
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6 |
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7 | /**
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8 | * Parse the give value as a regular expression or give a pass-none expression where it is invalid
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9 | * @param {RegExp|string|*} value An existing expression, or its string representation, or degenerate value
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10 | * @returns {RegExp} The given expression or one matching the RegExp string else a pass-none expression
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11 | */
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12 | function toRegExp(value) {
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13 | return ((typeof value === 'object') && (typeof value.test === 'function') && value) ||
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14 | ((typeof value === 'string') && REGEXP.test(value) && regexParser(value)) ||
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15 | (/^true$|^$/.test(value) && /.*/) ||
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16 | /matchnone^/;
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17 | }
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18 |
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19 | module.exports = toRegExp; |
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