JS Prototype boilerplate

proto-boilerplate.js

const nodeCustomInspect = Symbol.for('nodejs.util.inspect.custom');
const denoCustomInspect = Symbol.for("Deno.customInspect");

const Ctor = () => ({});

Object.assign(Ctor, {
    prototype: {
        constructor: Ctor,

        toString() {
            return '';
        },
        valueOf() {
            return 0;
        },
        [Symbol.toPrimitive](hint) {
            if (hint === 'string') {
                return this.toString();
            }

            return this.valueOf();
        },
        toJSON() {
            return this.valueOf();
        },
        get [Symbol.toStringTag]() {
            return Ctor.name;
        },
        toLog() {
            return `${this[Symbol.toStringTag]} { ${this.toString()} }`;
        },
        [nodeCustomInspect](depth, opts) {
            // console.log('nodeCustomInspect', depth, opts);
            return this.toLog();
        },
        [denoCustomInspect](inspect, opts) {
            // console.log('denoCustomInspect', inspect, opts);
            return this.toLog();
        }
    }
})