Graphemes

A JavaScript library to convert a string into an array of graphemes, following the Unicode 12 Text Segmentation spec

aka Unicode® Standard Annex #29

• Easy String -> String[] usage
• Also handles streaming for huge text
  • Iterator of code points in
  • Iterator of graphemes out
• Passes the Unicode 12 grapheme test suite
• Straightforward, Modern Typescript implementation
• Zero dependencies!

Usage

npm i graphemes

• This code uses Unicode property escapes so be sure to include @babel/plugin-proposal-unicode-property-regex if you plan to target Firefox and Edge. Example here

Example

const graphemes = require('graphemes');

const text = '각กำg̈';

console.log('Code points:', Array.from(text));
console.log('Graphemes:', graphemes.default(text));

/*
Code points: ['ᄀ', 'ᅡ', 'ᆨ','ก', 'ำ', 'g','̈']
Graphemes: [ '각', 'กำ', 'g̈' ]
*/