@internal API elements are erased for all languages except TypeScript

[rix0rrr]

🐛 Bug Report

Affected Languages

• TypeScript or Javascript
• Python
• Java
• .NET (C#, F#, ...)

What is the problem?

Currently in compliance.ts:

/**
 * @internal
 */
export interface InternalInterface {
  readonly prop: string;
}

export interface ExtendsInternalInterface extends InternalInterface {
  readonly boom: boolean;
}

We made this work (with lots of effort) for jsii client languages... but then forget to do it for TypeScript. The .d.ts looks like this:

// (...nothing about InternalInterface)

export interface ExtendsInternalInterface extends InternalInterface {   // <--- asplodes!
    readonly boom: boolean;
}

This leads to compilation errors for TypeScript.

[github-actions]

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