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//// [definiteAssignmentAssertions.ts]
// Suppress strict property initialization check
class C1 {
a!: number;
b: string; // Error
}
// 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;
b!: number = 1;
static c!: number;
}
// Definite assignment assertion not permitted in ambient context
declare class C4 {
a!: number;
}
// Definite assignment assertion not permitted on abstract property
abstract class C5 {
abstract a!: number;
}
// 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!;
let b! = 1;
let c!: number = 1;
}
// Definite assignment assertion not permitted in ambient context
declare let v1!: number;
declare var v2!: number;
//// [definiteAssignmentAssertions.js]
"use strict";
// Suppress strict property initialization check
var C1 = /** @class */ (function () {
function C1() {
}
return C1;
}());
// Suppress definite assignment check in constructor
var C2 = /** @class */ (function () {
function C2() {
var x = this.a;
}
return C2;
}());
// Definite assignment assertion requires type annotation, no initializer, no static modifier
var C3 = /** @class */ (function () {
function C3() {
this.a = 1;
this.b = 1;
}
return C3;
}());
// Definite assignment assertion not permitted on abstract property
var C5 = /** @class */ (function () {
function C5() {
}
return C5;
}());
// Suppress definite assignment check for variable
function f1() {
var x;
var y = x;
var a;
var b = a;
}
function f2() {
var x;
if (typeof x === "string") {
var s = x;
}
else {
var n = x;
}
}
function f3() {
var x;
var g = function () {
x = 1;
};
g();
var y = x;
}
// Definite assignment assertion requires type annotation and no initializer
function f4() {
var a;
var b = 1;
var c = 1;
}
//// [definiteAssignmentAssertions.d.ts]
declare class C1 {
a: number;
b: string;
}
declare class C2 {
a: number;
constructor();
}
declare class C3 {
a: number;
b: number;
static c: number;
}
declare class C4 {
a: number;
}
declare abstract class C5 {
abstract a: number;
}
declare function f1(): void;
declare function f2(): void;
declare function f3(): void;
declare function f4(): void;
declare let v1: number;
declare var v2: number;
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