File: contextualSignatureInstantiation1.ts

package info (click to toggle)
node-typescript 3.3.3333-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 324,548 kB
  • sloc: makefile: 6; sh: 3
file content (7 lines) | stat: -rw-r--r-- 480 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
 
declare function map<S, T>(f: (x: S) => T): (a: S[]) => T[];
var e = <K>(x: string, y?: K) => x.length;
var r99 = map(e); // should be {}[] for S since a generic lambda is not inferentially typed

declare function map2<S extends { length: number }, T>(f: (x: S) => T): (a: S[]) => T[];
var e2 = <K>(x: string, y?: K) => x.length;
var r100 = map2(e2); // type arg inference should fail for S since a generic lambda is not inferentially typed. Falls back to { length: number }