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@sakymark

サロゲートペア、異体字、絵文字に対応した文字数の数え方

Posted at

spread operatorだけでサロゲートペア文字列は対応できる

"𠮷野屋".length //=> 4
[..."𠮷野屋"].length // => 3

異体字や絵文字対応するなら、ライブラリを使う

import split from "graphemesplit";

"𠮷野屋👍🏾葛飾区👍葛󠄀城市👍🏿".length // => 22
[..."𠮷野屋👍🏾葛飾区👍葛󠄀城市👍🏿"].length // => 15
split("𠮷野屋👍🏾葛飾区👍葛󠄀城市👍🏿").length // => 12

使うライブラリ

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