14 lines
244 B
JavaScript
14 lines
244 B
JavaScript
/* @flow */
|
|
|
|
function foo(x?: number, ...y: Array<string>): [?number, Array<string>] {
|
|
return [x, y];
|
|
}
|
|
|
|
foo(); // OK
|
|
foo(123), // OK
|
|
foo(123, 'hello'); // OK
|
|
|
|
|
|
foo(true); // ERROR boolean ~> number
|
|
foo(123, true); // ERROR boolean ~> string
|