TypeScript types

[mikaello]

I tried to create TypeScript types for this module, but couldn't figure out how to do it in combination with importing it as a module:

import * as computerName from 'computer-name'

I need to use the * as otherwise I get an error at runtime telling me tab3.tsx? [sm]:16 Uncaught TypeError: computer_name_1.default is not a function.

I can't manage to type this import and get computerName to be a function returning a string. Has someone done this?

Here is what I tried so far (content of my src/types/computer-name.d.ts):

export = computerName;
declare function computerName(): string;

It is not recognized when I import computer-name, it gives the standard warning about no types. When I add the suggested declare module 'computer-name':

declare module 'computer-name' {
  export = computerName;
  function computerName(): string;
}

TS now gives this warning: This module can only be referenced with ECMAScript imports/exports by turning on the 'esModuleInterop' flag and referencing its default export.. esModuleInterop is on, so it seems to be the star import.

When I use const computerName = require('computer-name'), computerName will be typed as any, so that works for now, but it would be nice if I could get it correct.

[mikaello]

I actually made it work now by changing the import to:

import computerName = require('computer-name');

And the computer-name.d.ts file contains:

declare module 'computer-name' {
  export = computerName;
  function computerName(): string;
}

[lockieluke]

#4