36 lines
1000 B
JavaScript
36 lines
1000 B
JavaScript
// @flow
|
|
|
|
function test(a: string, b: number): number {
|
|
return this.length; // expect []/"" this
|
|
}
|
|
|
|
// args flow correctly into params
|
|
test.call("", "", 0);
|
|
|
|
// wrong this is an error
|
|
test.call(0, "", 0); // error: lookup `length` on Number
|
|
|
|
// not enough arguments is an error (via incompatible RestT)
|
|
test.call("", ""); // error: string ~> number
|
|
|
|
// mistyped arguments is an error
|
|
test.call("", "", ""); // error: string ~> number (2nd arg)
|
|
test.call("", 0, 0); // error: number ~> string (1st arg)
|
|
|
|
// resolve args array from tvar
|
|
function f(args) { test.call("", args[0], args[1]) }
|
|
f(["", 0]); // OK
|
|
f(["", ""]); // error: string ~> number (2nd arg)
|
|
f([0, 0]); // error: number ~> string (1st arg)
|
|
|
|
// expect 3 errors:
|
|
// - lookup length on Number (0 used as `this`)
|
|
// - number !~> string (param a)
|
|
// - string !~> number (param b)
|
|
(test.apply.call(test, 0, [0, 'foo']): number);
|
|
|
|
// args are optional
|
|
function test2(): number { return 0; }
|
|
(test2.call(): number);
|
|
(test2.call(""): number);
|