Protected nested classes

TypeScript Version: 1.8.9

Code

class Outer {
    protected static Inner = class {}
    private myInner: Outer.Inner;
}

Expected behavior: No errors.

Actual behavior: Compiler error: Cannot find namespace 'Outer'. Line 3, Column 24

Code

class Outer {
    protected static Inner = class {}
    private myInner: Outer.Inner;
}
namespace Outer {}

Expected behavior: No errors.

Actual behavior: Compiler error: Module 'Outer' has no exported member 'Inner'. Line 3, Column 32

Code

export class Outer {
    protected static Inner = class {};
}

export class Child extends Outer {
    static temp = class extends Outer.Inner {}
}

Expected behavior: No errors.

Actual behavior: Compiler error: Property 'Inner' is protected and only accessible within class 'Outer' and its subclasses. Line 6, Column 35

The problem here is that there is no way to define a protected nested class in a way that makes it possible to use in a type declaration. The third example shows why I want to use this: I want a nested class that can only be extended by classes that extend the parent class.

Riproduci i tre esempi TypeScript dell’issue, incluso il workaround con namespace e il caso di estensione di una sottoclasse. Traccia il modo in cui il compilatore risolve i tipi di classe annidati e i membri statici protetti, quindi aggiungi una copertura di regressione che dimostri che gli esempi validi vengono compilati senza errori, mentre l’accesso ai membri protetti continua a essere applicato.