first approach to implemet point cuts

firstApproachPointCut.js

class PointCut {
    constructor(definition) {
        this.inject(definition);
    }

    inject(definition) {
        this.injectAspectToObjectMethods(definition.class.prototype);
    }

    injectAspectToObjectMethods(prototype) {
        prototype[name] = this.decorate(prototype[name]);
    }

    decorate(joinPoint) {
        const pointCut = this;
        return function (...args) {
            const context = this;
            pointCut.before(context, joinPoint.name, ...args);
            const result = pointCut.around(context, joinPoint, ...args);
            pointCut.after(context, joinPoint.name, result, ...args);
            return result;
        }
    }

    before(context, joinPointName, ...args) {
        console.log("before");
    }

    after(context, joinPointName, result, ...args) {
        console.log("after");
    }

    around(context, joinPoint, ...args) {
        console.log("around: start");
        const result = joinPoint.apply(context, args);
        console.log("around: end");
        return result;
    }
}