Types: Missing MemoExoticComponent in preact/compat

[rschristian]

• Check if updating to the latest Preact version resolves the issue

Describe the bug
The React namespace in preact/compat is missing a definition for MemoExoticComponent so users who rely on that and use preact/compat's types instead of React's run into the issue where their components are typed as any.

https://twitter.com/Sawtaytoes/status/1625959909752709121

To Reproduce

The following example React library will generate the following types:

import { memo } from 'react';

function MyComponent() {
    return <h1>Hello World!</h1>;
}

export const MyMemoComponent = memo(MyComponent);

export const MyMemoComponent: import("react").MemoExoticComponent<typeof MyComponent>;
declare function MyComponent(): JSX.Element;
export {};

If we were to alias react to preact/compat using "paths" in a tsconfig.json in a consumer of the above library, that would essentially become this:

export const MyMemoComponent: import("preact/compat").MemoExoticComponent<typeof MyComponent>;
declare function MyComponent(): JSX.Element;
export {};

However, as there is no MemoExoticComponent, MyMemoComponent becomes typed as any.

Interestingly, TS doesn't throw an error when an aliased path is missing a member.

Expected behavior

Should distribute MemoExoticComponent