init source

This commit is contained in:
Le Viet
2022-03-07 22:07:57 +07:00
parent e4376f3777
commit 8aba590a8d
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/**
* @author Toru Nagashima <https://github.com/mysticatea>
*/
"use strict";
module.exports = {
isCombiningCharacter: require("./is-combining-character"),
isEmojiModifier: require("./is-emoji-modifier"),
isRegionalIndicatorSymbol: require("./is-regional-indicator-symbol"),
isSurrogatePair: require("./is-surrogate-pair")
};
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/**
* @author Toru Nagashima <https://github.com/mysticatea>
*/
"use strict";
/**
* Check whether a given character is an emoji modifier.
* @param {number} code The character code to check.
* @returns {boolean} `true` if the character is an emoji modifier.
*/
module.exports = function isEmojiModifier(code) {
return code >= 0x1F3FB && code <= 0x1F3FF;
};
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/**
* @author Toru Nagashima <https://github.com/mysticatea>
*/
"use strict";
/**
* Check whether a given character is a regional indicator symbol.
* @param {number} code The character code to check.
* @returns {boolean} `true` if the character is a regional indicator symbol.
*/
module.exports = function isRegionalIndicatorSymbol(code) {
return code >= 0x1F1E6 && code <= 0x1F1FF;
};
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/**
* @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;
};