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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
* GraphemerIterator
*
* Takes a string and a "BreakHandler" method during initialisation
* and creates an iterable object that returns individual graphemes.
*
* @param str {string}
* @return GraphemerIterator
*/
class GraphemerIterator {
constructor(str, nextBreak) {
this._index = 0;
this._str = str;
this._nextBreak = nextBreak;
}
[Symbol.iterator]() {
return this;
}
next() {
let brk;
if ((brk = this._nextBreak(this._str, this._index)) < this._str.length) {
const value = this._str.slice(this._index, brk);
this._index = brk;
return { value: value, done: false };
}
if (this._index < this._str.length) {
const value = this._str.slice(this._index);
this._index = this._str.length;
return { value: value, done: false };
}
return { value: undefined, done: true };
}
}
exports.default = GraphemerIterator;