tests/cases/conformance/types/thisType/declarationFiles.ts(5,20): error TS2526: A 'this' type is available only in a non-static member of a class or interface.
tests/cases/conformance/types/thisType/declarationFiles.ts(31,5): error TS2527: The inferred type of 'x1' references an inaccessible 'this' type. A type annotation is necessary.
tests/cases/conformance/types/thisType/declarationFiles.ts(33,5): error TS2527: The inferred type of 'x3' references an inaccessible 'this' type. A type annotation is necessary.
tests/cases/conformance/types/thisType/declarationFiles.ts(35,5): error TS2527: The inferred type of 'f1' references an inaccessible 'this' type. A type annotation is necessary.
tests/cases/conformance/types/thisType/declarationFiles.ts(41,5): error TS2527: The inferred type of 'f3' references an inaccessible 'this' type. A type annotation is necessary.


==== tests/cases/conformance/types/thisType/declarationFiles.ts (5 errors) ====
    
    class C1 {
        x: this;
        f(x: this): this { return undefined; }
        constructor(x: this) { }
                       ~~~~
!!! error TS2526: A 'this' type is available only in a non-static member of a class or interface.
    }
    
    class C2 {
        [x: string]: this;
    }
    
    interface Foo<T> {
        x: T;
        y: this;
    }
    
    class C3 {
        a: this[];
        b: [this, this];
        c: this | Date;
        d: this & Date;
        e: (((this)));
        f: (x: this) => this;
        g: new (x: this) => this;
        h: Foo<this>;
        i: Foo<this | (() => this)>;
        j: (x: any) => x is this;
    }
    
    class C4 {
        x1 = { a: this };
        ~~
!!! error TS2527: The inferred type of 'x1' references an inaccessible 'this' type. A type annotation is necessary.
        x2 = [this];
        x3 = [{ a: this }];
        ~~
!!! error TS2527: The inferred type of 'x3' references an inaccessible 'this' type. A type annotation is necessary.
        x4 = () => this;
        f1() {
        ~~
!!! error TS2527: The inferred type of 'f1' references an inaccessible 'this' type. A type annotation is necessary.
            return { a: this };
        }
        f2() {
            return [this];
        }
        f3() {
        ~~
!!! error TS2527: The inferred type of 'f3' references an inaccessible 'this' type. A type annotation is necessary.
            return [{ a: this }];
        }
        f4() {
            return () => this;
        }
    }
    