TypeScript/tests/baselines/reference/silentNeverPropagation.js
Anders Hejlsberg 193b7494d0
Properly propagate silentNeverType in intersections (#45073)
* Properly propagate silentNeverType in intersections

* Add regression test
2021-07-16 11:20:04 -07:00

57 lines
1.3 KiB
TypeScript

//// [silentNeverPropagation.ts]
// Repro from #45041
type ModuleWithState<TState> = {
state: TState;
};
type State = {
a: number;
};
type MoreState = {
z: string;
};
declare function createModule<TState, TActions>(state: TState, actions: TActions): ModuleWithState<TState> & TActions;
declare function convert<TState, TActions>(m: ModuleWithState<TState> & TActions): ModuleWithState<TState & MoreState> & TActions;
const breaks = convert(
createModule({ a: 12 }, { foo() { return true } })
);
breaks.state.a
breaks.state.z
breaks.foo()
//// [silentNeverPropagation.js]
"use strict";
// Repro from #45041
var breaks = convert(createModule({ a: 12 }, { foo: function () { return true; } }));
breaks.state.a;
breaks.state.z;
breaks.foo();
//// [silentNeverPropagation.d.ts]
declare type ModuleWithState<TState> = {
state: TState;
};
declare type State = {
a: number;
};
declare type MoreState = {
z: string;
};
declare function createModule<TState, TActions>(state: TState, actions: TActions): ModuleWithState<TState> & TActions;
declare function convert<TState, TActions>(m: ModuleWithState<TState> & TActions): ModuleWithState<TState & MoreState> & TActions;
declare const breaks: ModuleWithState<{
a: number;
} & MoreState> & ModuleWithState<{
a: number;
}> & {
foo(): true;
};