Function addSignal

docs/app/js/sanddance-app.js:149653–149657

(name, value20)

        return (0, _vegaUtil.hasOwnProperty)(this.signals, name);
    },
    addSignal (name, value20) {
        if (this.hasOwnSignal(name)) (0, _vegaUtil.error)("Duplicate signal name: " + (0, _vegaUtil.stringValue)(name));
        const op = value20 instanceof Entry ? value20 : this.add(operator(value20));
        return this.signals[name] = op;
    },
    getSignal (name) {
        if (!this.signals[name]) (0, _vegaUtil.error)("Unrecognized signal name: " + (0, _vegaUtil.stringValue)(name));
        return this.signals[name];