80 lines
1.4 KiB
TypeScript
80 lines
1.4 KiB
TypeScript
// @strict: true
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// @declaration: true
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// Suppress strict property initialization check
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class C1 {
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a!: number;
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b: string; // Error
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}
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// Suppress definite assignment check in constructor
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class C2 {
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a!: number;
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constructor() {
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let x = this.a;
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}
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}
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// Definite assignment assertion requires type annotation, no initializer, no static modifier
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class C3 {
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a! = 1;
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b!: number = 1;
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static c!: number;
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}
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// Definite assignment assertion not permitted in ambient context
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declare class C4 {
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a!: number;
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}
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// Definite assignment assertion not permitted on abstract property
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abstract class C5 {
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abstract a!: number;
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}
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// Suppress definite assignment check for variable
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function f1() {
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let x!: number;
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let y = x;
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var a!: number;
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var b = a;
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}
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function f2() {
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let x!: string | number;
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if (typeof x === "string") {
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let s: string = x;
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}
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else {
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let n: number = x;
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}
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}
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function f3() {
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let x!: number;
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const g = () => {
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x = 1;
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}
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g();
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let y = x;
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}
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// Definite assignment assertion requires type annotation and no initializer
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function f4() {
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let a!;
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let b! = 1;
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let c!: number = 1;
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}
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// Definite assignment assertion not permitted in ambient context
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declare let v1!: number;
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declare var v2!: number;
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