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// dependencies for a class
const dep = new Map();
// sigelton classes
const singelton = new Map();
// transient classes
const transient = new Map();
/**
* keeps track of our classes and dependencies
*
*/
export class ContainerClasses {
/**
* returns a instance of a class, pass in the class type/prototype to get it
*
*/
public static get(_class: any): any {
const instance = this.getInstance(_class);
return instance;
}
/**
* returns dependencies only (I dont use this atm)
*
*/
/* public static getDepOnly<T>(_class: T): T {
return dep.get(_class);
}
*/
/**
* get instance of class and create if it is not created before
*
*/
private static getInstance<T>(_class: T): T {
if (transient.has(_class)) {
return this.create(_class);
} else {
if (!singelton.get(_class)) {
singelton.set(_class, this.create(_class));
}
return singelton.get(_class);
}
}
/**
* ...todo
*
*/
private static create(_class: any): any {
let deps = dep.get(_class) || [];
deps = deps.map((classX: any) => {
try {
return this.get(classX);
} catch (e) {
return classX;
}
});
// @ts-ignore: Unreachable code error
return new _class(...deps);
}
/**
* set dependencies for a class
*
*/
public static setDep(_class: any, deps: any) {
dep.set(_class, deps);
}
/**
* registers a class as transient
*
*/
public static regTransient(_class: any) {
if (!transient.has(_class)) {
transient.set(_class, null);
}
}
}
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