Method addWatcher

tasks/task.js:20–24

* @param {string[] | (() => string[])} files * @param {(changedFiles: string[], watcher: import('chokidar').FSWatcher, platforms: object) => void | Promise } onChange

(files, onChange)

     * @param {(changedFiles: string[], watcher: import('chokidar').FSWatcher, platforms: object) => void | Promise<void>} onChange
     */
    addWatcher(files, onChange) {
        this._watchFiles = files;
        this._onChange = onChange;
        return this;
    }

    /**
     * @param {() => void | Promise<void>} fn