typescript port of github.com/usirin/simple-kernel

create-kernel.ts

export interface Bootstrapper<T> {
  bootstrap(context: T): Promise<any> | any;
}

export interface KernelOptions<T> {
  bootstrappers: Array<Bootstrapper<T>>;
}

export function createKernel<T>(
  options: KernelOptions<T>,
  initialContext: Partial<T> = {},
) {
  const context: Partial<T> = { ...initialContext };

  return new Kernel<T>(options, context);
}

class Kernel<T> {
  private readonly bootstrappers: Array<Bootstrapper<T>>;
  private context: T;

  constructor(options: KernelOptions<T>, context: Partial<T>) {
    this.bootstrappers = options.bootstrappers;
    this.context = context as T;
  }

  public async boot() {
    const context = { ...this.context };
    for (const bootstrapper of this.bootstrappers) {
      await bootstrapper.bootstrap(context as T);
    }
    this.context = context;

    return this.context;
  }

  public getContext() {
    return this.context;
  }
}