TypeScript/tests/cases/compiler/jsxComponentTypeErrors.tsx

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// @strict: true
// @jsx: preserve
namespace JSX {
export interface Element {
type: 'element';
}
export interface ElementClass {
type: 'element-class';
}
}
function FunctionComponent<T extends string>({type}: {type?: T}) {
return {
type
}
}
FunctionComponent.useThis = function() {
return <this type="foo" />;
}
class ClassComponent {
type = 'string';
}
const MixedComponent = Math.random() ? FunctionComponent : ClassComponent;
const elem1 = <FunctionComponent type="abc" />;
const elem2 = <FunctionComponent<"abc"> />;
const elem3 = <ClassComponent />;
const elem4 = <MixedComponent />;
const obj = {
MemberFunctionComponent() {
return {};
},
MemberClassComponent: class {},
};
const elem5 = <obj.MemberFunctionComponent />;
const elem6 = <obj. MemberClassComponent />;