Method on

src/notebooks/debugger/protocolParser.node.ts:53–56

(event: string | symbol, listener: Listener)

        stream.addListener('data', this.dataCallbackHandler);
    }
    public on(event: string | symbol, listener: Listener): this {
        this.events.on(event, listener);
        return this;
    }
    public once(event: string | symbol, listener: Listener): this {
        this.events.once(event, listener);
        return this;