Jarvis Emitter Interface Builder - Can be faster!

[KromDaniel]

Hey
This is micro optimisation, but still

If I'll take the following loop:

console.time('creating a lot of');
// we push to array else v8 can skip the entire loop
const jarvises = [];
for(let i=0; i < 2**24; i++) {
    jarvises.push(
        new JarvisEmitterInterfaceBuilder()
        .name('dynamicName')
        .role('someRole')
        .sticky(false)
        .description('my Description')
        .build(),
    );
}
console.timeEnd('creating a lot of');

And run it, it takes around ~4200MS

Let's have a look at the constructor:

class JarvisEmitterInterfaceBuilder {
	constructor() {
		this.object = {};
	}

and It will dynamically create the keys name, role etc (v8 unlikes it)

But if I'll pre-create them (v8 likes it)

class JarvisEmitterInterfaceBuilder {
	constructor() {
		this.object = {
                   name: null,
                   role: null,
                   sticky: null,
                   description: null,
           };
	}

And run the same loop again, it will take ~1900MS around 2.2x times faster

The only question is, can these fields be nullable?