423 lines
11 KiB
Plaintext
423 lines
11 KiB
Plaintext
=== tests/cases/conformance/es6/destructuring/destructuringParameterDeclaration1ES6.ts ===
|
|
// Conformance for emitting ES6
|
|
|
|
// A parameter declaration may specify either an identifier or a binding pattern.
|
|
// The identifiers specified in parameter declarations and binding patterns
|
|
// in a parameter list must be unique within that parameter list.
|
|
|
|
// If the declaration includes a type annotation, the parameter is of that type
|
|
function a1([a, b, [[c]]]: [number, number, string[][]]) { }
|
|
>a1 : ([a, b, [[c]]]: [number, number, string[][]]) => void
|
|
>a : number
|
|
>b : number
|
|
>c : string
|
|
|
|
function a2(o: { x: number, a: number }) { }
|
|
>a2 : (o: { x: number; a: number; }) => void
|
|
>o : { x: number; a: number; }
|
|
>x : number
|
|
>a : number
|
|
|
|
function a3({j, k, l: {m, n}, q: [a, b, c]}: { j: number, k: string, l: { m: boolean, n: number }, q: (number|string)[] }) { };
|
|
>a3 : ({j, k, l: {m, n}, q: [a, b, c]}: { j: number; k: string; l: { m: boolean; n: number; }; q: (string | number)[]; }) => void
|
|
>j : number
|
|
>k : string
|
|
>l : any
|
|
>m : boolean
|
|
>n : number
|
|
>q : any
|
|
>a : string | number
|
|
>b : string | number
|
|
>c : string | number
|
|
>j : number
|
|
>k : string
|
|
>l : { m: boolean; n: number; }
|
|
>m : boolean
|
|
>n : number
|
|
>q : (string | number)[]
|
|
|
|
function a4({x, a}: { x: number, a: number }) { }
|
|
>a4 : ({x, a}: { x: number; a: number; }) => void
|
|
>x : number
|
|
>a : number
|
|
>x : number
|
|
>a : number
|
|
|
|
a1([1, 2, [["world"]]]);
|
|
>a1([1, 2, [["world"]]]) : void
|
|
>a1 : ([a, b, [[c]]]: [number, number, string[][]]) => void
|
|
>[1, 2, [["world"]]] : [number, number, string[][]]
|
|
>1 : number
|
|
>2 : number
|
|
>[["world"]] : string[][]
|
|
>["world"] : string[]
|
|
>"world" : string
|
|
|
|
a1([1, 2, [["world"]], 3]);
|
|
>a1([1, 2, [["world"]], 3]) : void
|
|
>a1 : ([a, b, [[c]]]: [number, number, string[][]]) => void
|
|
>[1, 2, [["world"]], 3] : [number, number, string[][], number]
|
|
>1 : number
|
|
>2 : number
|
|
>[["world"]] : string[][]
|
|
>["world"] : string[]
|
|
>"world" : string
|
|
>3 : number
|
|
|
|
|
|
// If the declaration includes an initializer expression (which is permitted only
|
|
// when the parameter list occurs in conjunction with a function body),
|
|
// the parameter type is the widened form (section 3.11) of the type of the initializer expression.
|
|
|
|
function b1(z = [undefined, null]) { };
|
|
>b1 : (z?: any[]) => void
|
|
>z : any[]
|
|
>[undefined, null] : null[]
|
|
>undefined : undefined
|
|
>null : null
|
|
|
|
function b2(z = null, o = { x: 0, y: undefined }) { }
|
|
>b2 : (z?: any, o?: { x: number; y: any; }) => void
|
|
>z : any
|
|
>null : null
|
|
>o : { x: number; y: any; }
|
|
>{ x: 0, y: undefined } : { x: number; y: undefined; }
|
|
>x : number
|
|
>0 : number
|
|
>y : undefined
|
|
>undefined : undefined
|
|
|
|
function b3({z: {x, y: {j}}} = { z: { x: "hi", y: { j: 1 } } }) { }
|
|
>b3 : ({z: {x, y: {j}}}?: { z: { x: string; y: { j: number; }; }; }) => void
|
|
>z : any
|
|
>x : string
|
|
>y : any
|
|
>j : number
|
|
>{ z: { x: "hi", y: { j: 1 } } } : { z: { x: string; y: { j: number; }; }; }
|
|
>z : { x: string; y: { j: number; }; }
|
|
>{ x: "hi", y: { j: 1 } } : { x: string; y: { j: number; }; }
|
|
>x : string
|
|
>"hi" : string
|
|
>y : { j: number; }
|
|
>{ j: 1 } : { j: number; }
|
|
>j : number
|
|
>1 : number
|
|
|
|
interface F1 {
|
|
>F1 : F1
|
|
|
|
b5(z, y, [, a, b], {p, m: { q, r}});
|
|
>b5 : (z: any, y: any, [, a, b]: [any, any, any], {p, m: { q, r}}: { p: any; m: { q: any; r: any; }; }) => any
|
|
>z : any
|
|
>y : any
|
|
> : undefined
|
|
>a : any
|
|
>b : any
|
|
>p : any
|
|
>m : any
|
|
>q : any
|
|
>r : any
|
|
}
|
|
|
|
function b6([a, z, y] = [undefined, null, undefined]) { }
|
|
>b6 : ([a, z, y]?: [undefined, null, undefined]) => void
|
|
>a : any
|
|
>z : any
|
|
>y : any
|
|
>[undefined, null, undefined] : [undefined, null, undefined]
|
|
>undefined : undefined
|
|
>null : null
|
|
>undefined : undefined
|
|
|
|
function b7([[a], b, [[c, d]]] = [[undefined], undefined, [[undefined, undefined]]]) { }
|
|
>b7 : ([[a], b, [[c, d]]]?: [[undefined], undefined, [[undefined, undefined]]]) => void
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
>d : any
|
|
>[[undefined], undefined, [[undefined, undefined]]] : [[undefined], undefined, [[undefined, undefined]]]
|
|
>[undefined] : [undefined]
|
|
>undefined : undefined
|
|
>undefined : undefined
|
|
>[[undefined, undefined]] : [[undefined, undefined]]
|
|
>[undefined, undefined] : [undefined, undefined]
|
|
>undefined : undefined
|
|
>undefined : undefined
|
|
|
|
b1([1, 2, 3]); // z is widen to the type any[]
|
|
>b1([1, 2, 3]) : void
|
|
>b1 : (z?: any[]) => void
|
|
>[1, 2, 3] : number[]
|
|
>1 : number
|
|
>2 : number
|
|
>3 : number
|
|
|
|
b2("string", { x: 200, y: "string" });
|
|
>b2("string", { x: 200, y: "string" }) : void
|
|
>b2 : (z?: any, o?: { x: number; y: any; }) => void
|
|
>"string" : string
|
|
>{ x: 200, y: "string" } : { x: number; y: string; }
|
|
>x : number
|
|
>200 : number
|
|
>y : string
|
|
>"string" : string
|
|
|
|
b2("string", { x: 200, y: true });
|
|
>b2("string", { x: 200, y: true }) : void
|
|
>b2 : (z?: any, o?: { x: number; y: any; }) => void
|
|
>"string" : string
|
|
>{ x: 200, y: true } : { x: number; y: boolean; }
|
|
>x : number
|
|
>200 : number
|
|
>y : boolean
|
|
>true : boolean
|
|
|
|
|
|
// If the declaration specifies a binding pattern, the parameter type is the implied type of that binding pattern (section 5.1.3)
|
|
enum Foo { a }
|
|
>Foo : Foo
|
|
>a : Foo
|
|
|
|
function c0({z: {x, y: {j}}}) { }
|
|
>c0 : ({z: {x, y: {j}}}: { z: { x: any; y: { j: any; }; }; }) => void
|
|
>z : any
|
|
>x : any
|
|
>y : any
|
|
>j : any
|
|
|
|
function c1({z} = { z: 10 }) { }
|
|
>c1 : ({z}?: { z: number; }) => void
|
|
>z : number
|
|
>{ z: 10 } : { z: number; }
|
|
>z : number
|
|
>10 : number
|
|
|
|
function c2({z = 10}) { }
|
|
>c2 : ({z = 10}: { z?: number; }) => void
|
|
>z : number
|
|
>10 : number
|
|
|
|
function c3({b}: { b: number|string} = { b: "hello" }) { }
|
|
>c3 : ({b}?: { b: string | number; }) => void
|
|
>b : string | number
|
|
>b : string | number
|
|
>{ b: "hello" } : { b: string; }
|
|
>b : string
|
|
>"hello" : string
|
|
|
|
function c5([a, b, [[c]]]) { }
|
|
>c5 : ([a, b, [[c]]]: [any, any, [[any]]]) => void
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
|
|
function c6([a, b, [[c=1]]]) { }
|
|
>c6 : ([a, b, [[c=1]]]: [any, any, [[number]]]) => void
|
|
>a : any
|
|
>b : any
|
|
>c : number
|
|
>1 : number
|
|
|
|
c0({z : { x: 1, y: { j: "world" } }}); // Implied type is { z: {x: any, y: {j: any}} }
|
|
>c0({z : { x: 1, y: { j: "world" } }}) : void
|
|
>c0 : ({z: {x, y: {j}}}: { z: { x: any; y: { j: any; }; }; }) => void
|
|
>{z : { x: 1, y: { j: "world" } }} : { z: { x: number; y: { j: string; }; }; }
|
|
>z : { x: number; y: { j: string; }; }
|
|
>{ x: 1, y: { j: "world" } } : { x: number; y: { j: string; }; }
|
|
>x : number
|
|
>1 : number
|
|
>y : { j: string; }
|
|
>{ j: "world" } : { j: string; }
|
|
>j : string
|
|
>"world" : string
|
|
|
|
c0({z : { x: "string", y: { j: true } }}); // Implied type is { z: {x: any, y: {j: any}} }
|
|
>c0({z : { x: "string", y: { j: true } }}) : void
|
|
>c0 : ({z: {x, y: {j}}}: { z: { x: any; y: { j: any; }; }; }) => void
|
|
>{z : { x: "string", y: { j: true } }} : { z: { x: string; y: { j: boolean; }; }; }
|
|
>z : { x: string; y: { j: boolean; }; }
|
|
>{ x: "string", y: { j: true } } : { x: string; y: { j: boolean; }; }
|
|
>x : string
|
|
>"string" : string
|
|
>y : { j: boolean; }
|
|
>{ j: true } : { j: boolean; }
|
|
>j : boolean
|
|
>true : boolean
|
|
|
|
c1(); // Implied type is {z:number}?
|
|
>c1() : void
|
|
>c1 : ({z}?: { z: number; }) => void
|
|
|
|
c1({ z: 1 }) // Implied type is {z:number}?
|
|
>c1({ z: 1 }) : void
|
|
>c1 : ({z}?: { z: number; }) => void
|
|
>{ z: 1 } : { z: number; }
|
|
>z : number
|
|
>1 : number
|
|
|
|
c2({}); // Implied type is {z?: number}
|
|
>c2({}) : void
|
|
>c2 : ({z = 10}: { z?: number; }) => void
|
|
>{} : {}
|
|
|
|
c2({z:1}); // Implied type is {z?: number}
|
|
>c2({z:1}) : void
|
|
>c2 : ({z = 10}: { z?: number; }) => void
|
|
>{z:1} : { z: number; }
|
|
>z : number
|
|
>1 : number
|
|
|
|
c3({ b: 1 }); // Implied type is { b: number|string }.
|
|
>c3({ b: 1 }) : void
|
|
>c3 : ({b}?: { b: string | number; }) => void
|
|
>{ b: 1 } : { b: number; }
|
|
>b : number
|
|
>1 : number
|
|
|
|
c5([1, 2, [["string"]]]); // Implied type is is [any, any, [[any]]]
|
|
>c5([1, 2, [["string"]]]) : void
|
|
>c5 : ([a, b, [[c]]]: [any, any, [[any]]]) => void
|
|
>[1, 2, [["string"]]] : [number, number, [[string]]]
|
|
>1 : number
|
|
>2 : number
|
|
>[["string"]] : [[string]]
|
|
>["string"] : [string]
|
|
>"string" : string
|
|
|
|
c5([1, 2, [["string"]], false, true]); // Implied type is is [any, any, [[any]]]
|
|
>c5([1, 2, [["string"]], false, true]) : void
|
|
>c5 : ([a, b, [[c]]]: [any, any, [[any]]]) => void
|
|
>[1, 2, [["string"]], false, true] : [number, number, [[string]], boolean, boolean]
|
|
>1 : number
|
|
>2 : number
|
|
>[["string"]] : [[string]]
|
|
>["string"] : [string]
|
|
>"string" : string
|
|
>false : boolean
|
|
>true : boolean
|
|
|
|
|
|
// A parameter can be marked optional by following its name or binding pattern with a question mark (?)
|
|
// or by including an initializer.
|
|
|
|
interface F2 {
|
|
>F2 : F2
|
|
|
|
d3([a, b, c]?);
|
|
>d3 : ([a, b, c]?: [any, any, any]) => any
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
|
|
d4({x, y, z}?);
|
|
>d4 : ({x, y, z}?: { x: any; y: any; z: any; }) => any
|
|
>x : any
|
|
>y : any
|
|
>z : any
|
|
|
|
e0([a, b, c]);
|
|
>e0 : ([a, b, c]: [any, any, any]) => any
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
}
|
|
|
|
class C2 implements F2 {
|
|
>C2 : C2
|
|
>F2 : F2
|
|
|
|
constructor() { }
|
|
d3() { }
|
|
>d3 : () => void
|
|
|
|
d4() { }
|
|
>d4 : () => void
|
|
|
|
e0([a, b, c]) { }
|
|
>e0 : ([a, b, c]: [any, any, any]) => void
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
}
|
|
|
|
class C3 implements F2 {
|
|
>C3 : C3
|
|
>F2 : F2
|
|
|
|
d3([a, b, c]) { }
|
|
>d3 : ([a, b, c]: [any, any, any]) => void
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
|
|
d4({x, y, z}) { }
|
|
>d4 : ({x, y, z}: { x: any; y: any; z: any; }) => void
|
|
>x : any
|
|
>y : any
|
|
>z : any
|
|
|
|
e0([a, b, c]) { }
|
|
>e0 : ([a, b, c]: [any, any, any]) => void
|
|
>a : any
|
|
>b : any
|
|
>c : any
|
|
}
|
|
|
|
function d5({x, y} = { x: 1, y: 2 }) { }
|
|
>d5 : ({x, y}?: { x: number; y: number; }) => void
|
|
>x : number
|
|
>y : number
|
|
>{ x: 1, y: 2 } : { x: number; y: number; }
|
|
>x : number
|
|
>1 : number
|
|
>y : number
|
|
>2 : number
|
|
|
|
d5(); // Parameter is optional as its declaration included an initializer
|
|
>d5() : void
|
|
>d5 : ({x, y}?: { x: number; y: number; }) => void
|
|
|
|
// Destructuring parameter declarations do not permit type annotations on the individual binding patterns,
|
|
// as such annotations would conflict with the already established meaning of colons in object literals.
|
|
// Type annotations must instead be written on the top- level parameter declaration
|
|
|
|
function e1({x: number}) { } // x has type any NOT number
|
|
>e1 : ({x: number}: { x: any; }) => void
|
|
>x : any
|
|
>number : any
|
|
|
|
function e2({x}: { x: number }) { } // x is type number
|
|
>e2 : ({x}: { x: number; }) => void
|
|
>x : number
|
|
>x : number
|
|
|
|
function e3({x}: { x?: number }) { } // x is an optional with type number
|
|
>e3 : ({x}: { x?: number; }) => void
|
|
>x : number
|
|
>x : number
|
|
|
|
function e4({x: [number,string,any] }) { } // x has type [any, any, any]
|
|
>e4 : ({x: [number,string,any] }: { x: [any, any, any]; }) => void
|
|
>x : any
|
|
>number : any
|
|
>string : any
|
|
>any : any
|
|
|
|
function e5({x: [a, b, c]}: { x: [number, number, number] }) { } // x has type [any, any, any]
|
|
>e5 : ({x: [a, b, c]}: { x: [number, number, number]; }) => void
|
|
>x : any
|
|
>a : number
|
|
>b : number
|
|
>c : number
|
|
>x : [number, number, number]
|
|
|
|
function e6({x: [number, number, number]}) { } // should be an error, duplicate identifier;
|
|
>e6 : ({x: [number, number, number]}: { x: [any, any, any]; }) => void
|
|
>x : any
|
|
>number : any
|
|
>number : any
|
|
>number : any
|
|
|
|
|
|
|