There is a function within a Node module that I am trying to document in a .d.ts file. This function has two aliases, config() and load() (check the source here). The function definition in the dotenv/index.d.ts file looks like this:
export function config(options?: dotenvOptions): Object;
How can I export this function under the alias load() as well?
To define a type, you can do the following:
declare type ConstructorMethod = (options?: dotenvOptions) => Object;
(perhaps a better name is needed)
After that, you can export both methods under the same type:
export const config: ConstructorMethod;
export const load: ConstructorMethod;
By the way, it seems that the return type is actually object | boolean. Although union types can be tricky, I wanted to guide you towards a helpful resource for handling them in TypeScript: https://www.typescriptlang.org/docs/handbook/advanced-types.html (specifically the section on type guards and distinguishing types). It's something interesting that I recently discovered.
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