tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(3,5): error TS2322: Type 'true' is not assignable to type 'number'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(4,5): error TS2322: Type 'true' is not assignable to type 'string'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(5,5): error TS2322: Type 'true' is not assignable to type 'void'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(9,5): error TS2322: Type 'true' is not assignable to type 'E'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(12,5): error TS2322: Type 'true' is not assignable to type 'C'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(15,5): error TS2322: Type 'true' is not assignable to type 'I'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(17,5): error TS2322: Type 'true' is not assignable to type '() => string'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(21,1): error TS2539: Cannot assign to 'M' because it is not a variable. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(24,5): error TS2322: Type 'boolean' is not assignable to type 'T'. tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts(26,1): error TS2539: Cannot assign to 'i' because it is not a variable. ==== tests/cases/conformance/types/primitives/boolean/invalidBooleanAssignments.ts (10 errors) ==== var x = true; var a: number = x; ~ !!! error TS2322: Type 'true' is not assignable to type 'number'. var b: string = x; ~ !!! error TS2322: Type 'true' is not assignable to type 'string'. var c: void = x; ~ !!! error TS2322: Type 'true' is not assignable to type 'void'. var d: typeof undefined = x; enum E { A } var e: E = x; ~ !!! error TS2322: Type 'true' is not assignable to type 'E'. class C { foo: string } var f: C = x; ~ !!! error TS2322: Type 'true' is not assignable to type 'C'. interface I { bar: string } var g: I = x; ~ !!! error TS2322: Type 'true' is not assignable to type 'I'. var h: { (): string } = x; ~ !!! error TS2322: Type 'true' is not assignable to type '() => string'. var h2: { toString(): string } = x; // no error module M { export var a = 1; } M = x; ~ !!! error TS2539: Cannot assign to 'M' because it is not a variable. function i(a: T) { a = x; ~ !!! error TS2322: Type 'boolean' is not assignable to type 'T'. } i = x; ~ !!! error TS2539: Cannot assign to 'i' because it is not a variable.