Tone.js/Tone/signal/SignalOperator.ts

import { optionsFromArguments } from "../core/util/Defaults";
import { InputNode, ToneAudioNode, ToneAudioNodeOptions } from "../core/context/ToneAudioNode";
import { connectSignal } from "./Signal";

export type SignalOperatorOptions = ToneAudioNodeOptions;

/**
 * A signal operator has an input and output and modifies the signal.
 */
export abstract class SignalOperator<Options extends SignalOperatorOptions> extends ToneAudioNode<Options> {

	constructor(options?: Partial<Options>);
	constructor() {
		super(Object.assign(optionsFromArguments(SignalOperator.getDefaults(), arguments, ["context"])));
	}

	connect(destination: InputNode, outputNum = 0, inputNum = 0): this {
		connectSignal(this, destination, outputNum, inputNum);
		return this;
	}
}