TypeScript dynamic module loading issue with typeof

Question

I am dynamically loading modules I have created like so:

myModule.ts

export class SomeClass {
 ...
}
export type SomeType = {...}

In another file, I do:

import * as MyModuleType from "./myModule"
if(...) {
  let loadedModule: typeof MyModuleType = require("./myModule");
  ...
}

The type of MyModuleType has both SomeClass and SomeType (as expected). Whereas the type of loadedModule has only SomeClass (incomplete type!). How can I solve this issue?

Version of typescript: 2.3.2

editor: atom, using atom-typescript v10.1.15

Thank you.

mohamed hegazy · Accepted Answer · 2017-05-13 00:45:50Z

1

Types in TS descripe values. so typeof MyModuleType describes the shape of the module value at run time. The module value only has one property, i.e. SomeClass. And it does not have any property SomeType.

If you want to get the type jsut reference the import:

var x: MyModuleType.SomeType;

The TS compiler still knows that your import is only used as a type and will be elided.

answered May 13, 2017 at 0:45

mohamed hegazy

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1 Comment

Rishabh Poddar Over a year ago

Thanks for your reply, what you said works if the import statements and the dynamic require statement are in one file. What if I want to pass loadedModule to another file, and I want to do so without having an import * as .... statement in that file. How will I then get "SomeType" access via loadedModule?

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