sourav-das/stem-separator

1import EventEmitter from './event-emitter.js';2/** Base class for wavesurfer plugins */3export class BasePlugin extends EventEmitter {4    /** Create a plugin instance */5    constructor(options) {6        super();7        this.subscriptions = [];8        this.isDestroyed = false;9        this.options = options;10    }11    /** Called after this.wavesurfer is available */12    onInit() {13        return;14    }15    /** Do not call directly, only called by WavesSurfer internally */16    _init(wavesurfer) {17        // Reset state if plugin was previously destroyed18        if (this.isDestroyed) {19            this.subscriptions = [];20            this.isDestroyed = false;21        }22        this.wavesurfer = wavesurfer;23        this.onInit();24    }25    /** Destroy the plugin and unsubscribe from all events */26    destroy() {27        this.emit('destroy');28        this.subscriptions.forEach((unsubscribe) => unsubscribe());29        this.subscriptions = [];30        this.isDestroyed = true;31        this.wavesurfer = undefined;32    }33}34export default BasePlugin;35