@marijn/find-cluster-break
Small JavaScript module for finding grapheme cluster breaks in strings, scanning from a given position.
import {findClusterBreak} from "@marijn/find-cluster-break"
console.log(findClusterBreak("💪🏽🦋", 0))
// → 4
This code is open source, released under an MIT license.
Documentation
findClusterBreak(str: string, pos: number, forward = true, includeExtending = true): number
Returns a next grapheme cluster break after (not equal to) pos,
if forward is true, or before otherwise. Returns pos itself if no
further cluster break is available in the string. Moves across
surrogate pairs, extending characters (when includeExtending is
true, which is the default), characters joined with zero-width joiners,
and flag emoji.
isExtendingChar(code: number): boolean
Query whether the given character has a Grapheme_Cluster_Break value
of Extend in Unicode.