15 lines
468 B
Plaintext
15 lines
468 B
Plaintext
/**
|
|
* @author Toru Nagashima <https://github.com/mysticatea>
|
|
*/
|
|
"use strict";
|
|
|
|
/**
|
|
* Check whether given two characters are a surrogate pair.
|
|
* @param {number} lead The code of the lead character.
|
|
* @param {number} tail The code of the tail character.
|
|
* @returns {boolean} `true` if the character pair is a surrogate pair.
|
|
*/
|
|
module.exports = function isSurrogatePair(lead, tail) {
|
|
return lead >= 0xd800 && lead < 0xdc00 && tail >= 0xdc00 && tail < 0xe000;
|
|
};
|