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//// [tests/cases/conformance/functions/parameterInitializersForwardReferencing.ts] ////
=== parameterInitializersForwardReferencing.ts ===
function left(a, b = a, c = b) {
>left : (a: any, b?: any, c?: any) => void
>a : any
>b : any
>a : any
>c : any
>b : any
a;
>a : any
b;
>b : any
}
function right(a = b, b = a) {
>right : (a?: any, b?: any) => void
>a : any
>b : any
>b : any
>a : any
a;
>a : any
b;
>b : any
}
function right2(a = b, b = c, c = a) {
>right2 : (a?: any, b?: any, c?: any) => void
>a : any
>b : any
>b : any
>c : any
>c : any
>a : any
a;
>a : any
b;
>b : any
c;
>c : any
}
function inside(a = b) {
>inside : (a?: any) => void
>a : any
>b : any
var b;
>b : any
}
function outside() {
>outside : () => void
var b;
>b : any
function inside(a = b) { // Still an error because b is declared inside the function
>inside : (a?: any) => void
>a : any
>b : any
var b;
>b : any
}
}
function defaultArgFunction(a = function () { return b; }, b = 1) { }
>defaultArgFunction : (a?: () => number, b?: number) => void
>a : () => number
>function () { return b; } : () => number
>b : number
>b : number
>1 : 1
function defaultArgArrow(a = () => () => b, b = 3) { }
>defaultArgArrow : (a?: () => () => number, b?: number) => void
>a : () => () => number
>() => () => b : () => () => number
>() => b : () => number
>b : number
>b : number
>3 : 3
class C {
>C : C
constructor(a = b, b = 1) { }
>a : number
>b : number
>b : number
>1 : 1
method(a = b, b = 1) { }
>method : (a?: number, b?: number) => void
>a : number
>b : number
>b : number
>1 : 1
}
// Function expressions
var x = (a = b, b = c, c = d) => { var d; };
>x : (a?: any, b?: any, c?: any) => void
>(a = b, b = c, c = d) => { var d; } : (a?: any, b?: any, c?: any) => void
>a : any
>b : any
>b : any
>c : any
>c : any
>d : any
>d : any
// Should not produce errors - can reference later parameters if they occur within a function expression initializer.
function f(a, b = function () { return c; }, c = b()) {
>f : (a: any, b?: () => any, c?: any) => void
>a : any
>b : () => any
>function () { return c; } : () => any
>c : any
>c : any
>b() : any
>b : () => any
}
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