src/lib/binding.js

import {ResolvedBinding} from './resolvedBinding'

/**
* @class Binding
*/
export class Binding{

  /**
  * This is a Binding
  * @constructor
  * @param {String} token - This is the token of the Binding
  * @param {Object} object - This if the object concerned, can be toClass, toValue, toFactory
  */
  constructor(token, object){
    this.token = token;
    this.object = object;
  }

  /**
  * Create a ResolvedBinding from the current Binding
  * @returns {ResolvedBinding} The resolvedBinding generated
  */
  resolve(){
    let factory = null;
    let deps = null;
    if(this.object){
      deps = this.object.deps;
      if(this.object.toClass){
        factory = (a,b,c,d,e,f,g,h,i,j)=>{
          return new this.object.toClass(a,b,c,d,e,f,g,h,i,j);
        }
      }else{
        if(this.object.toFactory){
          factory = this.object.toFactory
        }else{
          if(this.object.toValue){
            factory = () =>{
              return this.object.toValue
            }
          }
        }
      }
    }else{
      factory = ()=>{
        return null;
      }
    }

    return new ResolvedBinding(this.token, factory, deps);
  }
}