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=== tests/cases/compiler/genericRestTypes.ts ===
// Repro from #25793
// Gets the parameters of a function type as a tuple
// Removes the first element from a tuple
type Tail<T extends any[]> = ((...args: T) => any) extends ((head: any, ...tail: infer U) => any) ? U : never;
>Tail : Symbol(Tail, Decl(genericRestTypes.ts, 0, 0))
>T : Symbol(T, Decl(genericRestTypes.ts, 4, 10))
>args : Symbol(args, Decl(genericRestTypes.ts, 4, 31))
>T : Symbol(T, Decl(genericRestTypes.ts, 4, 10))
>head : Symbol(head, Decl(genericRestTypes.ts, 4, 61))
>tail : Symbol(tail, Decl(genericRestTypes.ts, 4, 71))
>U : Symbol(U, Decl(genericRestTypes.ts, 4, 86))
>U : Symbol(U, Decl(genericRestTypes.ts, 4, 86))
type MyFunctionType = (foo: number, bar: string) => boolean;
>MyFunctionType : Symbol(MyFunctionType, Decl(genericRestTypes.ts, 4, 110))
>foo : Symbol(foo, Decl(genericRestTypes.ts, 6, 23))
>bar : Symbol(bar, Decl(genericRestTypes.ts, 6, 35))
type Explicit = (...args: Tail<Parameters<MyFunctionType>>) => ReturnType<MyFunctionType>; // (bar: string) => boolean
>Explicit : Symbol(Explicit, Decl(genericRestTypes.ts, 6, 60))
>args : Symbol(args, Decl(genericRestTypes.ts, 8, 17))
>Tail : Symbol(Tail, Decl(genericRestTypes.ts, 0, 0))
>Parameters : Symbol(Parameters, Decl(lib.es5.d.ts, --, --))
>MyFunctionType : Symbol(MyFunctionType, Decl(genericRestTypes.ts, 4, 110))
>ReturnType : Symbol(ReturnType, Decl(lib.es5.d.ts, --, --))
>MyFunctionType : Symbol(MyFunctionType, Decl(genericRestTypes.ts, 4, 110))
type Bind1<T extends (head: any, ...tail: any[]) => any> = (...args: Tail<Parameters<T>>) => ReturnType<T>;
>Bind1 : Symbol(Bind1, Decl(genericRestTypes.ts, 8, 90))
>T : Symbol(T, Decl(genericRestTypes.ts, 10, 11))
>head : Symbol(head, Decl(genericRestTypes.ts, 10, 22))
>tail : Symbol(tail, Decl(genericRestTypes.ts, 10, 32))
>args : Symbol(args, Decl(genericRestTypes.ts, 10, 60))
>Tail : Symbol(Tail, Decl(genericRestTypes.ts, 0, 0))
>Parameters : Symbol(Parameters, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(genericRestTypes.ts, 10, 11))
>ReturnType : Symbol(ReturnType, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(genericRestTypes.ts, 10, 11))
type Generic = Bind1<MyFunctionType>; // (bar: string) => boolean
>Generic : Symbol(Generic, Decl(genericRestTypes.ts, 10, 107))
>Bind1 : Symbol(Bind1, Decl(genericRestTypes.ts, 8, 90))
>MyFunctionType : Symbol(MyFunctionType, Decl(genericRestTypes.ts, 4, 110))
function assignmentWithComplexRest<T extends any[]>() {
>assignmentWithComplexRest : Symbol(assignmentWithComplexRest, Decl(genericRestTypes.ts, 11, 37))
>T : Symbol(T, Decl(genericRestTypes.ts, 13, 35))
const fn1: (x: string, ...rest: T) => void = (x, ..._) => x;
>fn1 : Symbol(fn1, Decl(genericRestTypes.ts, 14, 9))
>x : Symbol(x, Decl(genericRestTypes.ts, 14, 16))
>rest : Symbol(rest, Decl(genericRestTypes.ts, 14, 26))
>T : Symbol(T, Decl(genericRestTypes.ts, 13, 35))
>x : Symbol(x, Decl(genericRestTypes.ts, 14, 50))
>_ : Symbol(_, Decl(genericRestTypes.ts, 14, 52))
>x : Symbol(x, Decl(genericRestTypes.ts, 14, 50))
const fn2: (...args: never) => void = fn1;
>fn2 : Symbol(fn2, Decl(genericRestTypes.ts, 15, 9))
>args : Symbol(args, Decl(genericRestTypes.ts, 15, 16))
>fn1 : Symbol(fn1, Decl(genericRestTypes.ts, 14, 9))
}
function assignmentWithComplexRest2<T extends any[]>() {
>assignmentWithComplexRest2 : Symbol(assignmentWithComplexRest2, Decl(genericRestTypes.ts, 16, 1))
>T : Symbol(T, Decl(genericRestTypes.ts, 18, 36))
const fn1: (cb: (x: string, ...rest: T) => void) => void = (cb) => {};
>fn1 : Symbol(fn1, Decl(genericRestTypes.ts, 19, 9))
>cb : Symbol(cb, Decl(genericRestTypes.ts, 19, 16))
>x : Symbol(x, Decl(genericRestTypes.ts, 19, 21))
>rest : Symbol(rest, Decl(genericRestTypes.ts, 19, 31))
>T : Symbol(T, Decl(genericRestTypes.ts, 18, 36))
>cb : Symbol(cb, Decl(genericRestTypes.ts, 19, 64))
const fn2: (cb: (...args: never) => void) => void = fn1;
>fn2 : Symbol(fn2, Decl(genericRestTypes.ts, 20, 9))
>cb : Symbol(cb, Decl(genericRestTypes.ts, 20, 16))
>args : Symbol(args, Decl(genericRestTypes.ts, 20, 21))
>fn1 : Symbol(fn1, Decl(genericRestTypes.ts, 19, 9))
}
function assignmentWithComplexRest3<T extends any[]>() {
>assignmentWithComplexRest3 : Symbol(assignmentWithComplexRest3, Decl(genericRestTypes.ts, 21, 1))
>T : Symbol(T, Decl(genericRestTypes.ts, 23, 36))
const fn1: (x: string, ...rest: T) => void = (x, ..._) => x;
>fn1 : Symbol(fn1, Decl(genericRestTypes.ts, 24, 9))
>x : Symbol(x, Decl(genericRestTypes.ts, 24, 16))
>rest : Symbol(rest, Decl(genericRestTypes.ts, 24, 26))
>T : Symbol(T, Decl(genericRestTypes.ts, 23, 36))
>x : Symbol(x, Decl(genericRestTypes.ts, 24, 50))
>_ : Symbol(_, Decl(genericRestTypes.ts, 24, 52))
>x : Symbol(x, Decl(genericRestTypes.ts, 24, 50))
const fn2: (...args: {x: "a"} & {x: "b"}) => void = fn1;
>fn2 : Symbol(fn2, Decl(genericRestTypes.ts, 25, 9))
>args : Symbol(args, Decl(genericRestTypes.ts, 25, 16))
>x : Symbol(x, Decl(genericRestTypes.ts, 25, 26))
>x : Symbol(x, Decl(genericRestTypes.ts, 25, 37))
>fn1 : Symbol(fn1, Decl(genericRestTypes.ts, 24, 9))
}
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