// @target: es2015
// @strict: true
// @declaration: true

declare const t1: [number, boolean, string];

(function (a, b, c){})(...t1);
(function (...x){})(...t1);
(function (a, ...x){})(...t1);
(function (a, b, ...x){})(...t1);
(function (a, b, c, ...x){})(...t1);

declare function f1(cb: (...args: typeof t1) => void): void;

f1((a, b, c) => {})
f1((...x) => {})
f1((a, ...x) => {})
f1((a, b, ...x) => {})
f1((a, b, c, ...x) => {})

declare const t2: [number, boolean, ...string[]];

(function (a, b, c){})(...t2);
(function (...x){})(...t2);
(function (a, ...x){})(...t2);
(function (a, b, ...x){})(...t2);
(function (a, b, c, ...x){})(...t2);

declare function f2(cb: (...args: typeof t2) => void): void;

f2((a, b, c) => {})
f2((...x) => {})
f2((a, ...x) => {})
f2((a, b, ...x) => {})
f2((a, b, c, ...x) => {})

declare const t3: [boolean, ...string[]];

(function (a, b, c){})(1, ...t3);
(function (...x){})(1, ...t3);
(function (a, ...x){})(1, ...t3);
(function (a, b, ...x){})(1, ...t3);
(function (a, b, c, ...x){})(1, ...t3);

declare function f3(cb: (x: number, ...args: typeof t3) => void): void;

f3((a, b, c) => {})
f3((...x) => {})
f3((a, ...x) => {})
f3((a, b, ...x) => {})
f3((a, b, c, ...x) => {})

function f4<T extends any[]>(t: T) {
    (function(...x){})(...t);
    (function(a, ...x){})(1, ...t);
    (function(a, ...x){})(1, 2, ...t);
    function f(cb: (x: number, ...args: T) => void) {}
    f((...x) => {});
    f((a, ...x) => {});
    f((a, b, ...x) => {});
}

declare function f5<T extends any[], U>(f: (...args: T) => U): (...args: T) => U;

let g0 = f5(() => "hello");
let g1 = f5((x, y) => 42);
let g2 = f5((x: number, y) => 42);
let g3 = f5((x: number, y: number) => x + y);
let g4 = f5((...args) => true);

declare function pipe<A extends any[], B, C>(f: (...args: A) => B, g: (x: B) => C): (...args: A) => C;

let g5 = pipe(() => true, b => 42);
let g6 = pipe(x => "hello", s => s.length);
let g7 = pipe((x, y) => 42, x => "" + x);
let g8 = pipe((x: number, y: string) => 42, x => "" + x);

// Repro from #25288

declare var tuple: [number, string];
(function foo(a, b){}(...tuple));

// Repro from #25289

declare function take(cb: (a: number, b: string) => void): void;

(function foo(...rest){}(1, ''));
take(function(...rest){});

// Repro from #29833

type ArgsUnion = [number, string] | [number, Error];
type TupleUnionFunc = (...params: ArgsUnion) => number;

const funcUnionTupleNoRest: TupleUnionFunc = (num, strOrErr) => {
  return num;
};

const funcUnionTupleRest: TupleUnionFunc = (...params) => {
  const [num, strOrErr] = params;
  return num;
};
