Added tests

Author: armanio123

tests/baselines/reference/intersectionType_useDefineForClassFields.js

@@ -0,0 +1,18 @@
+//// [intersectionType_useDefineForClassFields.ts]
+type Foo<T> = {
+    [k in keyof T & string]: any
+}
+
+function bar<T>(_p: T): { new(): Foo<T> } {
+    return null as any;
+}
+
+class Baz extends bar({ x: 1 }) {
+}
+
+//// [intersectionType_useDefineForClassFields.js]
+function bar(_p) {
+    return null;
+}
+class Baz extends bar({ x: 1 }) {
+}

tests/baselines/reference/intersectionType_useDefineForClassFields.symbols

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+=== tests/cases/compiler/intersectionType_useDefineForClassFields.ts ===
+type Foo<T> = {
+>Foo : Symbol(Foo, Decl(intersectionType_useDefineForClassFields.ts, 0, 0))
+>T : Symbol(T, Decl(intersectionType_useDefineForClassFields.ts, 0, 9))
+
+    [k in keyof T & string]: any
+>k : Symbol(k, Decl(intersectionType_useDefineForClassFields.ts, 1, 5))
+>T : Symbol(T, Decl(intersectionType_useDefineForClassFields.ts, 0, 9))
+}
+
+function bar<T>(_p: T): { new(): Foo<T> } {
+>bar : Symbol(bar, Decl(intersectionType_useDefineForClassFields.ts, 2, 1))
+>T : Symbol(T, Decl(intersectionType_useDefineForClassFields.ts, 4, 13))
+>_p : Symbol(_p, Decl(intersectionType_useDefineForClassFields.ts, 4, 16))
+>T : Symbol(T, Decl(intersectionType_useDefineForClassFields.ts, 4, 13))
+>Foo : Symbol(Foo, Decl(intersectionType_useDefineForClassFields.ts, 0, 0))
+>T : Symbol(T, Decl(intersectionType_useDefineForClassFields.ts, 4, 13))
+
+    return null as any;
+}
+
+class Baz extends bar({ x: 1 }) {
+>Baz : Symbol(Baz, Decl(intersectionType_useDefineForClassFields.ts, 6, 1))
+>bar : Symbol(bar, Decl(intersectionType_useDefineForClassFields.ts, 2, 1))
+>x : Symbol(x, Decl(intersectionType_useDefineForClassFields.ts, 8, 23))
+}

tests/baselines/reference/intersectionType_useDefineForClassFields.types

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+=== tests/cases/compiler/intersectionType_useDefineForClassFields.ts ===
+type Foo<T> = {
+>Foo : Foo<T>
+
+    [k in keyof T & string]: any
+}
+
+function bar<T>(_p: T): { new(): Foo<T> } {
+>bar : <T>(_p: T) => {    new (): Foo<T>;}
+>_p : T
+
+    return null as any;
+>null as any : any
+>null : null
+}
+
+class Baz extends bar({ x: 1 }) {
+>Baz : Baz
+>bar({ x: 1 }) : Foo<{ x: number; }>
+>bar : <T>(_p: T) => new () => Foo<T>
+>{ x: 1 } : { x: number; }
+>x : number
+>1 : 1
+}

tests/cases/compiler/intersectionType_useDefineForClassFields.ts

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+// @target: ESNext
+// @useDefineForClassFields: true
+
+type Foo<T> = {
+    [k in keyof T & string]: any
+}
+
+function bar<T>(_p: T): { new(): Foo<T> } {
+    return null as any;
+}
+
+class Baz extends bar({ x: 1 }) {
+}