Definitelytyped types for system-node.cjs

[tbrannam]

Definitelytyped types for system-node.cjs

[tbrannam]

So the simplest thing I could come up with looks like this in a local file

system-node.d.ts

/// <reference types="systemjs" />

declare module 'systemjs/dist/system-node.cjs' {
  type SystemJS = typeof System & {
    constructor: new () => SystemJS
  }

  const _System: SystemJS

  export { _System as System }

  export function applyImportMap(
    system: typeof System,
    importMap: System.ImportMap
  ): void
}


// if using Webpack and referencing the module context in a SystemJS Module
declare const __system_context__: System.Context

and usage wise

import SystemPkg  from 'systemjs/dist/system-node.cjs'
const { System, applyImportMap } = SystemPkg

const anotherSystemInstance = new System.contructor()
applyImportMap(anotherSystemInstance, { /* importmap *? })