tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(5,5): error TS2564: Property 'b' has no initializer and is not definitely assigned in the constructor.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(20,6): error TS1263: Declarations with initializers cannot also have definite assignment assertions.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(21,6): error TS1263: Declarations with initializers cannot also have definite assignment assertions.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(22,13): error TS1255: A definite assignment assertion '!' is not permitted in this context.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(23,5): error TS7008: Member 'd' implicitly has an 'any' type.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(23,6): error TS1264: Declarations with definite assignment assertions must also have type annotations.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(29,6): error TS1255: A definite assignment assertion '!' is not permitted in this context.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(35,15): error TS1255: A definite assignment assertion '!' is not permitted in this context.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(69,10): error TS1264: Declarations with definite assignment assertions must also have type annotations.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(70,10): error TS1263: Declarations with initializers cannot also have definite assignment assertions.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(71,10): error TS1263: Declarations with initializers cannot also have definite assignment assertions.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(76,15): error TS1255: A definite assignment assertion '!' is not permitted in this context.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(77,15): error TS1255: A definite assignment assertion '!' is not permitted in this context.
tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts(80,7): error TS1255: A definite assignment assertion '!' is not permitted in this context.


==== tests/cases/conformance/controlFlow/definiteAssignmentAssertions.ts (14 errors) ====
    // Suppress strict property initialization check
    
    class C1 {
        a!: number;
        b: string;  // Error
        ~
!!! error TS2564: Property 'b' has no initializer and is not definitely assigned in the constructor.
    }
    
    // Suppress definite assignment check in constructor
    
    class C2 {
        a!: number;
        constructor() {
            let x = this.a;
        }
    }
    
    // Definite assignment assertion requires type annotation, no initializer, no static modifier
    
    class C3 {
        a! = 1;
         ~
!!! error TS1263: Declarations with initializers cannot also have definite assignment assertions.
        b!: number = 1;
         ~
!!! error TS1263: Declarations with initializers cannot also have definite assignment assertions.
        static c!: number;
                ~
!!! error TS1255: A definite assignment assertion '!' is not permitted in this context.
        d!;
        ~
!!! error TS7008: Member 'd' implicitly has an 'any' type.
         ~
!!! error TS1264: Declarations with definite assignment assertions must also have type annotations.
    }
    
    // Definite assignment assertion not permitted in ambient context
    
    declare class C4 {
        a!: number;
         ~
!!! error TS1255: A definite assignment assertion '!' is not permitted in this context.
    }
    
    // Definite assignment assertion not permitted on abstract property
    
    abstract class C5 {
        abstract a!: number;
                  ~
!!! error TS1255: A definite assignment assertion '!' is not permitted in this context.
    }
    
    // Suppress definite assignment check for variable
    
    function f1() {
        let x!: number;
        let y = x;
        var a!: number;
        var b = a;
    }
    
    function f2() {
        let x!: string | number;
        if (typeof x === "string") {
            let s: string = x;
        }
        else {
            let n: number = x;
        }
    }
    
    function f3() {
        let x!: number;
        const g = () => {
            x = 1;
        }
        g();
        let y = x;
    }
    
    // Definite assignment assertion requires type annotation and no initializer
    
    function f4() {
        let a!;
             ~
!!! error TS1264: Declarations with definite assignment assertions must also have type annotations.
        let b! = 1;
             ~
!!! error TS1263: Declarations with initializers cannot also have definite assignment assertions.
        let c!: number = 1;
             ~
!!! error TS1263: Declarations with initializers cannot also have definite assignment assertions.
    }
    
    // Definite assignment assertion not permitted in ambient context
    
    declare let v1!: number;
                  ~
!!! error TS1255: A definite assignment assertion '!' is not permitted in this context.
    declare var v2!: number;
                  ~
!!! error TS1255: A definite assignment assertion '!' is not permitted in this context.
    
    declare namespace foo {
    	var v!: number;
    	     ~
!!! error TS1255: A definite assignment assertion '!' is not permitted in this context.
    }