Re-exporting all members of a TypeScript namespace

Question

I'm trying to re-export everything in a namespace from a new module. I've tried the following, which works to a degree:

// index.ts import * as foo from 'foo'; function myFunction() {} // Re-export everything in 'foo' along with myFunction const thing = { ...foo, myFunction, } export = thing;

This results in a type declaration as follows:

import * as foo from 'foo'; declare function myFunction(); declare const thing: { Foo: typeof foo.Foo; Bar: typeof foo.Bar; myFunction: typeof myFunction; }; export = thing;

But when I try to consume the types from the generated d.ts file, I get an error:

'Foo' refers to a value, but used as a type

I suppose this is because Foo and Bar as declared as members of an object. Is there a way to achieve this re-export of existing types in a new module?

Object spread, namespace imports, and export assignment are all very different. In fact, the error that you encountered is just the tip of the iceberg — Aluan Haddad
– Aluan Haddad, Commented Jul 11, 2020 at 5:29
Yes, I'm sort of learning that the hard way. It may be that the only working solution is just re-exporting each individual member of foo separately, which is what I was hoping to avoid. — Hiranya Jayathilaka
– Hiranya Jayathilaka, Commented Jul 13, 2020 at 17:28

Karol Majewski · Accepted Answer · 2020-07-10 23:35:29Z

2

Have you tried this?

export * from 'foo'; export function myFunction() {}

answered Jul 10, 2020 at 23:35

Karol Majewski

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1 Comment

Hiranya Jayathilaka Over a year ago

This was one of the first ideas tried. Unfortunately, the other module I'm trying to re-export (which is a separate package in fact), uses export = and therefore cannot be re-exported as export *.

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