Sha256: bf82c8c2b0e9f0373b95de2eeabe61278ac4946a7cd8a864e3d51802818f8b61
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Size: 1.17 KB
Versions: 39
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Stored size: 1.17 KB
Contents
/**
* @fileoverview Common utils for regular expressions.
* @author Josh Goldberg
* @author Toru Nagashima
*/
"use strict";
const { RegExpValidator } = require("@eslint-community/regexpp");
const REGEXPP_LATEST_ECMA_VERSION = 2024;
/**
* Checks if the given regular expression pattern would be valid with the `u` flag.
* @param {number} ecmaVersion ECMAScript version to parse in.
* @param {string} pattern The regular expression pattern to verify.
* @returns {boolean} `true` if the pattern would be valid with the `u` flag.
* `false` if the pattern would be invalid with the `u` flag or the configured
* ecmaVersion doesn't support the `u` flag.
*/
function isValidWithUnicodeFlag(ecmaVersion, pattern) {
if (ecmaVersion <= 5) { // ecmaVersion <= 5 doesn't support the 'u' flag
return false;
}
const validator = new RegExpValidator({
ecmaVersion: Math.min(ecmaVersion, REGEXPP_LATEST_ECMA_VERSION)
});
try {
validator.validatePattern(pattern, void 0, void 0, { unicode: /* uFlag = */ true });
} catch {
return false;
}
return true;
}
module.exports = {
isValidWithUnicodeFlag,
REGEXPP_LATEST_ECMA_VERSION
};
Version data entries
39 entries across 29 versions & 1 rubygems