devexpress-richedit/lib/common/utils/unicode-string.js

DevExpress Rich Text Editor is an advanced word-processing tool designed for working with rich text documents.

import { isDefined } from "@devexpress/utils/lib/utils/common";
export class UnicodeString {
    value;
    _chars;
    constructor(value) {
        this.value = value;
    }
    get chars() {
        if (!this._chars)
            this._chars = isDefined(this.value) ? Array.from(this.value) : [];
        return this._chars;
    }
    get size() {
        return this.chars.length;
    }
    get isEmpty() {
        return this.chars.length === 0;
    }
    charAt(index) {
        return this.chars.at(index);
    }
    substring(start, end) {
        return new UnicodeString(this.chars.slice(start, end).join(''));
    }
    [Symbol.toPrimitive](hint) {
        if (hint === "string" || hint === "default")
            return this.value;
        return NaN;
    }
    toString() {
        return this.value;
    }
    valueOf() {
        return this.value;
    }
}