Export everything but a few items in Typescript

user_4808079 0
Viewed 1383

I'd like to export everything from a module except for a few functions that I'd like to override. Something like this:

import * as Base from "base-module";
const extendMeOld = Base.extendMe;
delete Base.extendMe;

export * from Base;

export function extendMe() {
  extendMeOld();
  someOtherCode();
}

How can this be achieved with Typescript?

typescript export
2 Answers

It's ugly, but this works:

import { extendMe as extendMeOld } from "base-module";

export function extendMe() {
  extendMeOld();
  someOtherCode();
}

// @ts-ignore
export * from Base;

I guess whatever is exported first takes precedence. I was surprised and expected it to be the opposite (export overwrite), but perhaps module resolution is a runtime thing?

Anyways, one overloads the other and tsc will get mad about it, but you can just make it ignore the problem.

user_48080790

In order to keep it tree shakable id suggest the following

export { doNotExtendMe, meNeigher } from "base-module";
import { extendMe as extendMeOld } from "base-module";

export function extendMe() {
  extendMeOld();
  someOtherCode();
}
user_102264400
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