Factory of objects using string names

factory-objects.ts

/* eslint @typescript-eslint/no-explicit-any: off -- need to have any here for the factory */
namespace Factory {

  const map_: Map<string, any> = new Map()

  export const bind = (obj: any, name: string = '') => {
    name.length === 0 ? map_.set(obj.name, obj) : map_.set(name, obj)
  }

  export const create = (name:string, params: any = undefined) => {
    const M = map_.get(name)
    if (M) {
      return new M(params)
    }
    return undefined
  }

  export const exists = (name: string): boolean => {
    return map_.get(name) !== undefined
  }

  export const names = (): string[] => {
    return Array.from(map_.keys())
  }

}

// ============ example

interface A {
  generate(): void
}

class B implements A {
  generate() {
    console.log('in B')
  }
}

class C implements A {
  constructor(private msg: string) {
  }

  generate() {
    console.log(`in C with msg = ${this.msg}`)
  }
}

Factory.bind(B)
Factory.bind(C)

// ----------------------------

const m = Factory.create('C', 'Hello World')
m.generate()

console.log(Factory.exists('B'))
console.log(Factory.exists('E'))
console.log(Factory.names())