Conformance test for Spec Change in Section 3.8.2.2 parameter Declaration and 6.4 Destructuring parameter declarations

src/compiler/diagnosticInformationMap.generated.ts

@@ -1,6 +1,5 @@
 // <auto-generated />
 /// <reference path="types.ts" />
-/* @internal */
 module ts {
     export var Diagnostics = {
         Unterminated_string_literal: { code: 1002, category: DiagnosticCategory.Error, key: "Unterminated string literal." },

tests/baselines/reference/destructuringParameterDeclaration1.js

@@ -0,0 +1,287 @@
+//// [destructuringParameterDeclaration1.ts]
+// 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[][]]) { }
+function a2(o: { 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)[] }) { };
+function a4({x, a}: { x: number, a: number }) { }
+
+a1([1, 2, [["world"]]]);
+a1([1, 2, [["world"]], 3]);
+a1([1, "string", [["world"]]);  // Error
+a1([1, 2, [["world"]], "string"]);  // Error
+
+
+// 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]) { };
+function b2(z = null, o = { x: 0, y: undefined }) { }
+function b3({z: {x, y: {j}}} = { z: { x: "hi", y: { j: 1 } } }) { }
+
+interface F1 {
+    b4(z = 10, [[a, b], d, {u}] = [[1, 2], "string", { u: false }]);  // Error, no function body
+    b5(z, y, [, a, b], {p, m: { q, r}});
+}
+
+function b6([a, z, y] = [undefined, null, undefined]) { }
+function b7([[a], b, [[c, d]]] = [[undefined], undefined, [[undefined, undefined]]]) { }
+
+b1([1, 2, 3]);  // z is widen to the type any[]
+b2("string", { x: 200, y: "string" });
+b2("string", { x: 200, y: true });
+b2("string", { x: "string", y: true });  // Error
+b6(["string", 1, 2]);                    // Shouldn't be an error
+b7([["string"], 1, [[true, false]]]);    // Shouldn't be an error
+
+
+// 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 }
+function c0({z: {x, y: {j}}}) { }
+function c1({z} = { z: 10 }) { }
+function c2({z = 10}) { }
+function c3({b}: { b: number|string} = { b: "hello" }) { }
+function c4([z], z: number) { }  // Duplicate identifier
+function c5([a, b, [[c]]]) { }
+function c6([a, b, [[c=1]]]) { }
+
+c0({z : { x: 1, y: { j: "world" } }});      // Implied type is { z: {x: any, y: {j: any}} }
+c0({z : { x: "string", y: { j: true } }});  // Implied type is { z: {x: any, y: {j: any}} }
+c0({z : 1});                                // Error, implied type is { z: {x: any, y: {j: any}} }
+
+c1({});           // Error, implied type is {z:number}?
+c1({ z: true });  // Error, implied type is {z:number}?
+c1();             // Implied type is {z:number}?
+c1({ z: 1 })      // Implied type is {z:number}? 
+
+c2({});         // Implied type is {z?: number}
+c2({z:1});      // Implied type is {z?: number}
+c2({z:false});  // Error, implied type is {z?: number}
+
+c3({ b: 1 });     // Implied type is { b: number|string }.
+c3({ b: true });  // Error, implied type is { b: number|string }. 
+
+c5([1, 2, [["string"]]]);               // Implied type is is [any, any, [[any]]]
+c5([1, 2, [["string"]], false, true]);  // Implied type is is [any, any, [[any]]]
+c5([1, 2, false, true]);                // Error, implied type is [any, any, [[any]]]
+
+c6([1, 2, [["string"]]]);  // Error, implied type is [any, any, [[number]]]  // Use initializer
+
+// A parameter can be marked optional by following its name or binding pattern with a question mark (?)
+// or by including an initializer.
+
+function d0(x?) { }
+function d0(x = 10) { }
+function d1([a, b, c]?) { }  // Error, binding pattern can't be optional in implementation signature
+function d2({x, y, z}?) { }  // Error, binding pattern can't be optional in implementation signature
+
+interface F2 {
+    d3([a, b, c]?);
+    d4({x, y, z}?);
+    e0([a, b, c]);
+}
+
+class C2 implements F2 {
+    constructor() { }
+    d3() { }
+    d4() { }
+    e0([a, b, c]) { }
+}
+
+class C3 implements F2 {
+    d3([a, b, c]) { }
+    d4({x, y, z}) { }
+    e0([a, b, c]) { }
+}
+
+class C4 implements F2 {
+    d3([a, b, c]?) { }
+    d4({x, y, c}) { }
+    e0([a, b, q]) { }
+}
+
+function d5({x, y} = { x: 1, y: 2 }) { }
+d5();  // Parameter is optional as its declaration included an initializer
+
+// 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
+function e2({x}: { x: number }) { }  // x is type number
+function e3({x}: { x?: number }) { }  // x is an optional with type number
+function e4({x: [number,string,any] }) { }  // x has type [any, any, any]
+function e5({x: [a, b, c]}: { x: [number, number, number] }) { }  // x has type [any, any, any]
+
+function e6({x: [number, number, number]}) { }  // should be an error, duplicate identifier;
+
+
+
+
+//// [destructuringParameterDeclaration1.js]
+// 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) {
+    var a = _a[0], b = _a[1], c = _a[2][0][0];
+}
+function a2(o) { }
+function a3(_a) {
+    var j = _a.j, k = _a.k, _b = _a.l, m = _b.m, n = _b.n, _c = _a.q, a = _c[0], b = _c[1], c = _c[2];
+}
+;
+function a4(_a) {
+    var x = _a.x, a = _a.a;
+}
+a1([1, 2, [["world"]]]);
+a1([1, 2, [["world"]], 3]);
+a1([1, "string", [["world"]]]); // Error
+a1([1, 2, [["world"]], "string"]); // Error
+// 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) {
+    if (z === void 0) { z = [undefined, null]; }
+}
+;
+function b2(z, o) {
+    if (z === void 0) { z = null; }
+    if (o === void 0) { o = { x: 0, y: undefined }; }
+}
+function b3(_a) {
+    var _b = (_a === void 0 ? { z: { x: "hi", y: { j: 1 } } } : _a).z, x = _b.x, j = _b.y.j;
+}
+function b6(_a) {
+    var _b = _a === void 0 ? [undefined, null, undefined] : _a, a = _b[0], z = _b[1], y = _b[2];
+}
+function b7(_a) {
+    var _b = _a === void 0 ? [[undefined], undefined, [[undefined, undefined]]] : _a, a = _b[0][0], b = _b[1], _c = _b[2][0], c = _c[0], d = _c[1];
+}
+b1([1, 2, 3]); // z is widen to the type any[]
+b2("string", { x: 200, y: "string" });
+b2("string", { x: 200, y: true });
+b2("string", { x: "string", y: true }); // Error
+b6(["string", 1, 2]); // Shouldn't be an error
+b7([["string"], 1, [[true, false]]]); // Shouldn't be an error
+// If the declaration specifies a binding pattern, the parameter type is the implied type of that binding pattern (section 5.1.3)
+var Foo;
+(function (Foo) {
+    Foo[Foo["a"] = 0] = "a";
+})(Foo || (Foo = {}));
+function c0(_a) {
+    var _b = _a.z, x = _b.x, j = _b.y.j;
+}
+function c1(_a) {
+    var z = (_a === void 0 ? { z: 10 } : _a).z;
+}
+function c2(_a) {
+    var _b = _a.z, z = _b === void 0 ? 10 : _b;
+}
+function c3(_a) {
+    var b = (_a === void 0 ? { b: "hello" } : _a).b;
+}
+function c4(_a, z) {
+    var z = _a[0];
+} // Duplicate identifier
+function c5(_a) {
+    var a = _a[0], b = _a[1], c = _a[2][0][0];
+}
+function c6(_a) {
+    var a = _a[0], b = _a[1], _b = _a[2][0][0], c = _b === void 0 ? 1 : _b;
+}
+c0({ z: { x: 1, y: { j: "world" } } }); // Implied type is { z: {x: any, y: {j: any}} }
+c0({ z: { x: "string", y: { j: true } } }); // Implied type is { z: {x: any, y: {j: any}} }
+c0({ z: 1 }); // Error, implied type is { z: {x: any, y: {j: any}} }
+c1({}); // Error, implied type is {z:number}?
+c1({ z: true }); // Error, implied type is {z:number}?
+c1(); // Implied type is {z:number}?
+c1({ z: 1 }); // Implied type is {z:number}? 
+c2({}); // Implied type is {z?: number}
+c2({ z: 1 }); // Implied type is {z?: number}
+c2({ z: false }); // Error, implied type is {z?: number}
+c3({ b: 1 }); // Implied type is { b: number|string }.
+c3({ b: true }); // Error, implied type is { b: number|string }. 
+c5([1, 2, [["string"]]]); // Implied type is is [any, any, [[any]]]
+c5([1, 2, [["string"]], false, true]); // Implied type is is [any, any, [[any]]]
+c5([1, 2, false, true]); // Error, implied type is [any, any, [[any]]]
+c6([1, 2, [["string"]]]); // Error, implied type is [any, any, [[number]]]  // Use initializer
+// A parameter can be marked optional by following its name or binding pattern with a question mark (?)
+// or by including an initializer.
+function d0(x) { }
+function d0(x) {
+    if (x === void 0) { x = 10; }
+}
+function d1(_a) {
+    var a = _a[0], b = _a[1], c = _a[2];
+} // Error, binding pattern can't be optional in implementation signature
+function d2(_a) {
+    var x = _a.x, y = _a.y, z = _a.z;
+} // Error, binding pattern can't be optional in implementation signature
+var C2 = (function () {
+    function C2() {
+    }
+    C2.prototype.d3 = function () { };
+    C2.prototype.d4 = function () { };
+    C2.prototype.e0 = function (_a) {
+        var a = _a[0], b = _a[1], c = _a[2];
+    };
+    return C2;
+})();
+var C3 = (function () {
+    function C3() {
+    }
+    C3.prototype.d3 = function (_a) {
+        var a = _a[0], b = _a[1], c = _a[2];
+    };
+    C3.prototype.d4 = function (_a) {
+        var x = _a.x, y = _a.y, z = _a.z;
+    };
+    C3.prototype.e0 = function (_a) {
+        var a = _a[0], b = _a[1], c = _a[2];
+    };
+    return C3;
+})();
+var C4 = (function () {
+    function C4() {
+    }
+    C4.prototype.d3 = function (_a) {
+        var a = _a[0], b = _a[1], c = _a[2];
+    };
+    C4.prototype.d4 = function (_a) {
+        var x = _a.x, y = _a.y, c = _a.c;
+    };
+    C4.prototype.e0 = function (_a) {
+        var a = _a[0], b = _a[1], q = _a[2];
+    };
+    return C4;
+})();
+function d5(_a) {
+    var _b = _a === void 0 ? { x: 1, y: 2 } : _a, x = _b.x, y = _b.y;
+}
+d5(); // Parameter is optional as its declaration included an initializer
+// 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(_a) {
+    var number = _a.x;
+} // x has type any NOT number
+function e2(_a) {
+    var x = _a.x;
+} // x is type number
+function e3(_a) {
+    var x = _a.x;
+} // x is an optional with type number
+function e4(_a) {
+    var _b = _a.x, number = _b[0], string = _b[1], any = _b[2];
+} // x has type [any, any, any]
+function e5(_a) {
+    var _b = _a.x, a = _b[0], b = _b[1], c = _b[2];
+} // x has type [any, any, any]
+function e6(_a) {
+    var _b = _a.x, number = _b[0], number = _b[1], number = _b[2];
+} // should be an error, duplicate identifier;