Description
TypeScript Version: master
Code
function f(g: (ev: Event) => any) { }
function g(ev: MouseEvent) { }
f(g);
f(ev => g(ev));Expected behavior:
$ node built/local/tsc.js index.ts --noEmit --strict
index.ts(3,3): error ...
index.ts(4,11): error TS2345: Argument of type 'Event' is not assignable to parameter of type 'MouseEvent'.
Property 'altKey' is missing in type 'Event'.
Actual behavior:
$ node built/local/tsc.js index.ts --noEmit --strict
index.ts(4,11): error TS2345: Argument of type 'Event' is not assignable to parameter of type 'MouseEvent'.
Property 'altKey' is missing in type 'Event'.