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tests/cases/conformance/types/union/unionTypeCallSignatures4.ts(23,1): error TS2554: Expected 2 arguments, but got 1.
tests/cases/conformance/types/union/unionTypeCallSignatures4.ts(25,18): error TS2554: Expected 2 arguments, but got 3.
==== tests/cases/conformance/types/union/unionTypeCallSignatures4.ts (2 errors) ====
type F1 = (a: string, b?: string) => void;
type F2 = (a: string, b?: string, c?: string) => void;
type F3 = (a: string, ...rest: string[]) => void;
type F4 = (a: string, b?: string, ...rest: string[]) => void;
type F5 = (a: string, b: string) => void;
var f12: F1 | F2;
f12("a");
f12("a", "b");
f12("a", "b", "c"); // ok
var f34: F3 | F4;
f34("a");
f34("a", "b");
f34("a", "b", "c");
var f1234: F1 | F2 | F3 | F4;
f1234("a");
f1234("a", "b");
f1234("a", "b", "c"); // ok
var f12345: F1 | F2 | F3 | F4 | F5;
f12345("a"); // error
~~~~~~~~~~~
!!! error TS2554: Expected 2 arguments, but got 1.
!!! related TS6210 tests/cases/conformance/types/union/unionTypeCallSignatures4.ts:5:23: An argument for 'b' was not provided.
f12345("a", "b");
f12345("a", "b", "c"); // error
~~~
!!! error TS2554: Expected 2 arguments, but got 3.
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