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=== tests/cases/conformance/classes/propertyMemberDeclarations/strictPropertyInitialization.ts ===
// Properties with non-undefined types require initialization
class C1 {
>C1 : Symbol(C1, Decl(strictPropertyInitialization.ts, 0, 0))
a: number; // Error
>a : Symbol(C1.a, Decl(strictPropertyInitialization.ts, 2, 10))
b: number | undefined;
>b : Symbol(C1.b, Decl(strictPropertyInitialization.ts, 3, 14))
c: number | null; // Error
>c : Symbol(C1.c, Decl(strictPropertyInitialization.ts, 4, 26))
d?: number;
>d : Symbol(C1.d, Decl(strictPropertyInitialization.ts, 5, 21))
}
// No strict initialization checks in ambient contexts
declare class C2 {
>C2 : Symbol(C2, Decl(strictPropertyInitialization.ts, 7, 1))
a: number;
>a : Symbol(C2.a, Decl(strictPropertyInitialization.ts, 11, 18))
b: number | undefined;
>b : Symbol(C2.b, Decl(strictPropertyInitialization.ts, 12, 14))
c: number | null;
>c : Symbol(C2.c, Decl(strictPropertyInitialization.ts, 13, 26))
d?: number;
>d : Symbol(C2.d, Decl(strictPropertyInitialization.ts, 14, 21))
}
// No strict initialization checks for static members
class C3 {
>C3 : Symbol(C3, Decl(strictPropertyInitialization.ts, 16, 1))
static a: number;
>a : Symbol(C3.a, Decl(strictPropertyInitialization.ts, 20, 10))
static b: number | undefined;
>b : Symbol(C3.b, Decl(strictPropertyInitialization.ts, 21, 21))
static c: number | null;
>c : Symbol(C3.c, Decl(strictPropertyInitialization.ts, 22, 33))
static d?: number;
>d : Symbol(C3.d, Decl(strictPropertyInitialization.ts, 23, 28))
}
// Initializer satisfies strict initialization check
class C4 {
>C4 : Symbol(C4, Decl(strictPropertyInitialization.ts, 25, 1))
a = 0;
>a : Symbol(C4.a, Decl(strictPropertyInitialization.ts, 29, 10))
b: number = 0;
>b : Symbol(C4.b, Decl(strictPropertyInitialization.ts, 30, 10))
c: string = "abc";
>c : Symbol(C4.c, Decl(strictPropertyInitialization.ts, 31, 18))
}
// Assignment in constructor satisfies strict initialization check
class C5 {
>C5 : Symbol(C5, Decl(strictPropertyInitialization.ts, 33, 1))
a: number;
>a : Symbol(C5.a, Decl(strictPropertyInitialization.ts, 37, 10))
constructor() {
this.a = 0;
>this.a : Symbol(C5.a, Decl(strictPropertyInitialization.ts, 37, 10))
>this : Symbol(C5, Decl(strictPropertyInitialization.ts, 33, 1))
>a : Symbol(C5.a, Decl(strictPropertyInitialization.ts, 37, 10))
}
}
// All code paths must contain assignment
class C6 {
>C6 : Symbol(C6, Decl(strictPropertyInitialization.ts, 42, 1))
a: number; // Error
>a : Symbol(C6.a, Decl(strictPropertyInitialization.ts, 46, 10))
constructor(cond: boolean) {
>cond : Symbol(cond, Decl(strictPropertyInitialization.ts, 48, 16))
if (cond) {
>cond : Symbol(cond, Decl(strictPropertyInitialization.ts, 48, 16))
return;
}
this.a = 0;
>this.a : Symbol(C6.a, Decl(strictPropertyInitialization.ts, 46, 10))
>this : Symbol(C6, Decl(strictPropertyInitialization.ts, 42, 1))
>a : Symbol(C6.a, Decl(strictPropertyInitialization.ts, 46, 10))
}
}
class C7 {
>C7 : Symbol(C7, Decl(strictPropertyInitialization.ts, 54, 1))
a: number;
>a : Symbol(C7.a, Decl(strictPropertyInitialization.ts, 56, 10))
constructor(cond: boolean) {
>cond : Symbol(cond, Decl(strictPropertyInitialization.ts, 58, 16))
if (cond) {
>cond : Symbol(cond, Decl(strictPropertyInitialization.ts, 58, 16))
this.a = 1;
>this.a : Symbol(C7.a, Decl(strictPropertyInitialization.ts, 56, 10))
>this : Symbol(C7, Decl(strictPropertyInitialization.ts, 54, 1))
>a : Symbol(C7.a, Decl(strictPropertyInitialization.ts, 56, 10))
return;
}
this.a = 0;
>this.a : Symbol(C7.a, Decl(strictPropertyInitialization.ts, 56, 10))
>this : Symbol(C7, Decl(strictPropertyInitialization.ts, 54, 1))
>a : Symbol(C7.a, Decl(strictPropertyInitialization.ts, 56, 10))
}
}
// Properties with string literal names aren't checked
class C8 {
>C8 : Symbol(C8, Decl(strictPropertyInitialization.ts, 65, 1))
a: number; // Error
>a : Symbol(C8.a, Decl(strictPropertyInitialization.ts, 69, 10))
"b": number;
>"b" : Symbol(C8["b"], Decl(strictPropertyInitialization.ts, 70, 14))
0: number;
>0 : Symbol(C8[0], Decl(strictPropertyInitialization.ts, 71, 16))
}
// No strict initialization checks for abstract members
abstract class C9 {
>C9 : Symbol(C9, Decl(strictPropertyInitialization.ts, 73, 1))
abstract a: number;
>a : Symbol(C9.a, Decl(strictPropertyInitialization.ts, 77, 19))
abstract b: number | undefined;
>b : Symbol(C9.b, Decl(strictPropertyInitialization.ts, 78, 23))
abstract c: number | null;
>c : Symbol(C9.c, Decl(strictPropertyInitialization.ts, 79, 35))
abstract d?: number;
>d : Symbol(C9.d, Decl(strictPropertyInitialization.ts, 80, 30))
}
// Properties with non-undefined types must be assigned before they can be accessed
// within their constructor
class C10 {
>C10 : Symbol(C10, Decl(strictPropertyInitialization.ts, 82, 1))
a: number;
>a : Symbol(C10.a, Decl(strictPropertyInitialization.ts, 87, 11))
b: number;
>b : Symbol(C10.b, Decl(strictPropertyInitialization.ts, 88, 14))
c?: number;
>c : Symbol(C10.c, Decl(strictPropertyInitialization.ts, 89, 14))
constructor() {
let x = this.a; // Error
>x : Symbol(x, Decl(strictPropertyInitialization.ts, 92, 11))
>this.a : Symbol(C10.a, Decl(strictPropertyInitialization.ts, 87, 11))
>this : Symbol(C10, Decl(strictPropertyInitialization.ts, 82, 1))
>a : Symbol(C10.a, Decl(strictPropertyInitialization.ts, 87, 11))
this.a = this.b; // Error
>this.a : Symbol(C10.a, Decl(strictPropertyInitialization.ts, 87, 11))
>this : Symbol(C10, Decl(strictPropertyInitialization.ts, 82, 1))
>a : Symbol(C10.a, Decl(strictPropertyInitialization.ts, 87, 11))
>this.b : Symbol(C10.b, Decl(strictPropertyInitialization.ts, 88, 14))
>this : Symbol(C10, Decl(strictPropertyInitialization.ts, 82, 1))
>b : Symbol(C10.b, Decl(strictPropertyInitialization.ts, 88, 14))
this.b = x;
>this.b : Symbol(C10.b, Decl(strictPropertyInitialization.ts, 88, 14))
>this : Symbol(C10, Decl(strictPropertyInitialization.ts, 82, 1))
>b : Symbol(C10.b, Decl(strictPropertyInitialization.ts, 88, 14))
>x : Symbol(x, Decl(strictPropertyInitialization.ts, 92, 11))
let y = this.c;
>y : Symbol(y, Decl(strictPropertyInitialization.ts, 95, 11))
>this.c : Symbol(C10.c, Decl(strictPropertyInitialization.ts, 89, 14))
>this : Symbol(C10, Decl(strictPropertyInitialization.ts, 82, 1))
>c : Symbol(C10.c, Decl(strictPropertyInitialization.ts, 89, 14))
}
}
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