Run results for: aoeuaoeiaoei

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:80.0) Gecko/20100101 Firefox/80.0

Browser: Firefox 80

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
createConstructor	382.0 Ops/sec
ClassUtils	373.5 Ops/sec

Tests:

createConstructor
// utility functions for Immutability and Multiple Inheritance const createConstructor = function (funcArgs = {}) { const { classesToInherit, classProps, defaultArgs, methods } = funcArgs function deepFreeze(obj) { Object.getOwnPropertyNames(obj).map(key => { if (typeof obj[key] === 'object' && obj[key] !== null) deepFreeze(obj[key]) }) Object.freeze(obj) } // the passed constructor function InnerFunc (args = {}) { //set object props Object.assign(this, defaultArgs, args) //bind the methods per object const targetProto = Object.getPrototypeOf(this) Object.getOwnPropertyNames(targetProto).map(key => { if (key !== 'constructor') { Object.defineProperty(this, key, { enumerable: false, value: targetProto[key] instanceof Function ? targetProto[key].bind(this) : targetProto[key] }) } }) //freeze the object deepFreeze(this) } // set constructor props Object.assign(InnerFunc, classProps) // set inherited methods classesToInherit.map(constr => Object.getOwnPropertyNames(constr.prototype).map(key => { if (key !== 'constructor') { InnerFunc.prototype[key] = constr.prototype[key] } }) ) // set manually defined methods Object.assign(InnerFunc.prototype, methods) // method to copy object with some props changed InnerFunc.prototype.copyWithProps = function(props = {}) { return new this.constructor(Object.assign({}, this, props)) } // freeze the constructor deepFreeze(InnerFunc) return InnerFunc } // BADLY WRITTEN CLASSES class Height { constructor(args = {}) { this.height = args.height } getHeight() { return `Height: ${this.height}` } static heightInternal() { return 3 } } class Weight { constructor(args = {}) { this.weight = args.weight } getWeight() { return `Weight: ${this.weight}` } static weightInternal() { return 3 } } // WELL WRITTEN CLASSES const Person = createConstructor({ classesToInherit: [ Height, Weight ], classProps: { species: 'humans', internalMethod() { return 'Hello from inside the constructor' } }, defaultArgs: { name: 'John', age: 20, weight: 60, height: 160 }, methods: { // Uncomment to replace the inherited one //getHeight() { return 'CORRECT' }, // combines native with inherited methods greet() { console.log( `Hello, ${this.name}. ` + `${this.getWeight()}, ${this.getHeight()}` ) }, // calculates the method name first ['get' + 'Info']() { return `Name: ${this.name}, age: ${this.age}` }, // can also use async, * generator // which can also be static } }) for (let i = 0; i < 50; i++) { mark = new Person({ name: 'Mark', weight: 90, otherArg: true }) skinnyMark = mark.copyWithProps({ age: 32, weight: 75 }) skinnyMark.greet() mark.greet() }
ClassUtils
// utility functions for Immutability and Multiple Inheritance const ClassUtils = class Self { copyWithProps(props = {}) { return new this.constructor(Object.assign({}, this, props)) } finalizeInstance(props = {}) { if (!Object.isFrozen(this)) { //set object props Object.assign(this, props) //bind the methods per object const targetProto = Object.getPrototypeOf(this) Object.getOwnPropertyNames(targetProto).map(key => { if (key !== 'constructor') { Object.defineProperty(this, key, { enumerable: false, value: targetProto[key] instanceof Function ? targetProto[key].bind(this) : targetProto[key] }) } }) //freeze the object Self.deepFreeze(this) } } static deepFreeze(obj) { Object.getOwnPropertyNames(obj).map(key => { if (typeof obj[key] === 'object' && obj[key] !== null) Self.deepFreeze(obj[key]) }) Object.freeze(obj) } static finalizeClass({ target, props = {}, sources = [] }) { if (!Object.isFrozen(target)) { // set constructor props Object.assign(target, props) // set prototype methods sources.concat([Self, target]).map(constr => Object.getOwnPropertyNames(constr.prototype).map(key => { if (key !== 'constructor') { target.prototype[key] = constr.prototype[key] } }) ) // freeze the constructor Self.deepFreeze(target) } } } ClassUtils.deepFreeze(ClassUtils) // BADLY WRITTEN CLASSES class Height { constructor(args = {}) { this.height = args.height } getHeight() { return `Height: ${this.height}` } static heightInternal() { return 3 } } class Weight { constructor(args = {}) { this.weight = args.weight } getWeight() { return `Weight: ${this.weight}` } static weightInternal() { return 3 } } // WELL WRITTEN CLASSES const Person = class Self { constructor({ name, age, weight, height } = {}) { this.finalizeInstance({ name: name || 'John', age: age || 20, weight: weight || 60, height: height || 160 }) } // Uncomment to replace the inherited one //getHeight() { return 'CORRECT' } // combines native with inherited methods greet() { console.log(`Hello, ${this.name}. ${this.getWeight()}, ${this.getHeight()}`) } // calculates the method name first ['get' + 'Info']() { return `Name: ${this.name}, age: ${this.age}` } // class method static internalMethod() { return 'Hello from inside the constructor' } // can also use async, * generator // which can also be static } ClassUtils.finalizeClass({ target: Person, sources: [ Height, Weight ], props: { species: 'humans' } }) for (let i = 0; i < 50; i++) { mark = new Person({ name: 'Mark', weight: 90, otherArg: true }) skinnyMark = mark.copyWithProps({ age: 32, weight: 75 }) skinnyMark.greet() mark.greet() }

Run results for: aoeuaoeiaoei

createConstructor

ClassUtils