@adguard/agtree/dist/utils/noop-modifier.js

Tool set for working with adblock filter lists

/*
 * AGTree v3.4.3 (build date: Thu, 11 Dec 2025 13:43:19 GMT)
 * (c) 2025 Adguard Software Ltd.
 * Released under the MIT license
 * https://github.com/AdguardTeam/tsurlfilter/tree/master/packages/agtree#readme
 */
import { UNDERSCORE } from './constants.js';

/**
 * Validates the noop modifier (i.e. only underscores).
 *
 * @param value Value of the modifier.
 *
 * @returns True if the modifier is valid, false otherwise.
 */
const isValidNoopModifier = (value) => {
    const { length } = value;
    if (length === 0) {
        return false;
    }
    for (let i = 0; i < length; i += 1) {
        if (value[i] !== UNDERSCORE) {
            return false;
        }
    }
    return true;
};

export { isValidNoopModifier };