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node_modules/eslint/lib/rules/utils/regular-expressions.js
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drndsv
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14 апр 2025, 22:53
14 апр 2025, 22:53
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/** * @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 };