eslint/lib/rules/utils/unicode/is-combining-character.js

   1 /**
   2  * @author Toru Nagashima <https://github.com/mysticatea>
   3  */
   4 "use strict";
   5
   6 /**
   7  * Check whether a given character is a combining mark or not.
   8  * @param {number} codePoint The character code to check.
   9  * @returns {boolean} `true` if the character belongs to the category, any of `Mc`, `Me`, and `Mn`.
  10  */
  11 module.exports = function isCombiningCharacter(codePoint) {
  12     return /^[\p{Mc}\p{Me}\p{Mn}]$/u.test(String.fromCodePoint(codePoint));
  13 };