I want to re-export zod namespace, but add a few properties to it.

I tried this:

import * as zod from 'zod';

export namespace z {
  export * from 'zod';

  export const numericId = () => zod.coerce.number().int().safe();
}

However, this approach is giving TypeScript error:

Export declarations are not permitted in a namespace.ts(1194)

It also fails to bundle using ESBuild with an error:

Unexpected “export”

I was able to make it partially work using this approach:

export namespace z {
  // @ts-expect-error - TODO TypeScript complains that export is not allowed. However, it works.
  export type * from 'zod';

  export const string = zod.string;

  export const numericId = () => zod.coerce.number().int().safe();
}

But ran into limitation that export const enum and export const null is not allowed because the variable names are reserved.

export const { array, boolean, enum, null, number, object, string, record, literal, union } = zod;

(^This does work because null and enum cannot be exported as variables)