54 lines
1.1 KiB
TypeScript
54 lines
1.1 KiB
TypeScript
//// [typeParameterAssignability3.ts]
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// type parameters are not assignable to one another unless directly or indirectly constrained to one another
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class Foo { foo: string; }
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function foo<T extends Foo, U extends Foo>(t: T, u: U) {
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var a: T;
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var b: U;
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t = a; // ok
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a = t; // ok
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b = u; // ok
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u = b; // ok
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t = u; // error
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u = t; // error
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}
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class C<T extends Foo, U extends Foo> {
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t: T;
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u: U;
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r = () => {
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this.t = this.u; // error
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this.u = this.t; // error
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}
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}
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//// [typeParameterAssignability3.js]
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// type parameters are not assignable to one another unless directly or indirectly constrained to one another
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var Foo = (function () {
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function Foo() {
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}
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return Foo;
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})();
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function foo(t, u) {
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var a;
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var b;
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t = a; // ok
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a = t; // ok
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b = u; // ok
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u = b; // ok
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t = u; // error
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u = t; // error
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}
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var C = (function () {
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function C() {
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var _this = this;
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this.r = function () {
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_this.t = _this.u; // error
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_this.u = _this.t; // error
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};
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}
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return C;
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})();
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