Merge pull request #25565 from Microsoft/popFirst

Make 'pop' the first method that uses 'T' in 'Array'

src/lib/es5.d.ts

@@ -1125,15 +1125,15 @@ interface Array<T> {
       * Returns a string representation of an array. The elements are converted to string using their toLocalString methods.
       */
     toLocaleString(): string;
+    /**
+      * Removes the last element from an array and returns it.
+      */
+    pop(): T | undefined;
     /**
       * Appends new elements to an array, and returns the new length of the array.
       * @param items New elements of the Array.
       */
     push(...items: T[]): number;
-    /**
-      * Removes the last element from an array and returns it.
-      */
-    pop(): T | undefined;
     /**
       * Combines two or more arrays.
       * @param items Additional items to add to the end of array1.

tests/baselines/reference/arityAndOrderCompatibility01.errors.txt

@@ -21,7 +21,7 @@ tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(25,5): error
   Types of property '0' are incompatible.
     Type 'string' is not assignable to type 'number'.
 tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(26,5): error TS2322: Type '{ 0: string; 1: number; length: 2; }' is not assignable to type '[number]'.
-  Property 'push' is missing in type '{ 0: string; 1: number; length: 2; }'.
+  Property 'pop' is missing in type '{ 0: string; 1: number; length: 2; }'.
 tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(27,5): error TS2322: Type '[string, number]' is not assignable to type '[string]'.
   Types of property 'length' are incompatible.
     Type '2' is not assignable to type '1'.
@@ -29,14 +29,14 @@ tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(28,5): error
   Types of property 'length' are incompatible.
     Type '2' is not assignable to type '1'.
 tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(29,5): error TS2322: Type '{ 0: string; 1: number; length: 2; }' is not assignable to type '[string]'.
-  Property 'push' is missing in type '{ 0: string; 1: number; length: 2; }'.
+  Property 'pop' is missing in type '{ 0: string; 1: number; length: 2; }'.
 tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(30,5): error TS2322: Type '[string, number]' is not assignable to type '[number, string]'.
   Type 'string' is not assignable to type 'number'.
 tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(31,5): error TS2322: Type 'StrNum' is not assignable to type '[number, string]'.
   Types of property '0' are incompatible.
     Type 'string' is not assignable to type 'number'.
 tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(32,5): error TS2322: Type '{ 0: string; 1: number; length: 2; }' is not assignable to type '[number, string]'.
-  Property 'push' is missing in type '{ 0: string; 1: number; length: 2; }'.
+  Property 'pop' is missing in type '{ 0: string; 1: number; length: 2; }'.
 
 
 ==== tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts (19 errors) ====
@@ -102,7 +102,7 @@ tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(32,5): error
     var l3: [number] = z;
         ~~
 !!! error TS2322: Type '{ 0: string; 1: number; length: 2; }' is not assignable to type '[number]'.
-!!! error TS2322:   Property 'push' is missing in type '{ 0: string; 1: number; length: 2; }'.
+!!! error TS2322:   Property 'pop' is missing in type '{ 0: string; 1: number; length: 2; }'.
     var m1: [string] = x;
         ~~
 !!! error TS2322: Type '[string, number]' is not assignable to type '[string]'.
@@ -116,7 +116,7 @@ tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(32,5): error
     var m3: [string] = z;
         ~~
 !!! error TS2322: Type '{ 0: string; 1: number; length: 2; }' is not assignable to type '[string]'.
-!!! error TS2322:   Property 'push' is missing in type '{ 0: string; 1: number; length: 2; }'.
+!!! error TS2322:   Property 'pop' is missing in type '{ 0: string; 1: number; length: 2; }'.
     var n1: [number, string] = x;
         ~~
 !!! error TS2322: Type '[string, number]' is not assignable to type '[number, string]'.
@@ -129,7 +129,7 @@ tests/cases/conformance/types/tuple/arityAndOrderCompatibility01.ts(32,5): error
     var n3: [number, string] = z;
         ~~
 !!! error TS2322: Type '{ 0: string; 1: number; length: 2; }' is not assignable to type '[number, string]'.
-!!! error TS2322:   Property 'push' is missing in type '{ 0: string; 1: number; length: 2; }'.
+!!! error TS2322:   Property 'pop' is missing in type '{ 0: string; 1: number; length: 2; }'.
     var o1: [string, number] = x;
     var o2: [string, number] = y;
     var o3: [string, number] = y;

tests/baselines/reference/arrayAssignmentTest1.errors.txt

@@ -34,7 +34,7 @@ tests/cases/compiler/arrayAssignmentTest1.ts(77,1): error TS2322: Type 'I1[]' is
   Type 'I1' is not assignable to type 'C3'.
     Property 'CM3M1' is missing in type 'I1'.
 tests/cases/compiler/arrayAssignmentTest1.ts(79,1): error TS2322: Type '() => C1' is not assignable to type 'any[]'.
-  Property 'push' is missing in type '() => C1'.
+  Property 'pop' is missing in type '() => C1'.
 tests/cases/compiler/arrayAssignmentTest1.ts(80,1): error TS2322: Type '{ one: number; }' is not assignable to type 'any[]'.
   Property 'length' is missing in type '{ one: number; }'.
 tests/cases/compiler/arrayAssignmentTest1.ts(82,1): error TS2322: Type 'C1' is not assignable to type 'any[]'.
@@ -177,7 +177,7 @@ tests/cases/compiler/arrayAssignmentTest1.ts(85,1): error TS2322: Type 'I1' is n
     arr_any = f1; // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type '() => C1' is not assignable to type 'any[]'.
-!!! error TS2322:   Property 'push' is missing in type '() => C1'.
+!!! error TS2322:   Property 'pop' is missing in type '() => C1'.
     arr_any = o1; // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type '{ one: number; }' is not assignable to type 'any[]'.

tests/baselines/reference/arrayAssignmentTest2.errors.txt

@@ -8,9 +8,9 @@ tests/cases/compiler/arrayAssignmentTest2.ts(49,1): error TS2322: Type 'I1[]' is
   Type 'I1' is not assignable to type 'C3'.
     Property 'CM3M1' is missing in type 'I1'.
 tests/cases/compiler/arrayAssignmentTest2.ts(51,1): error TS2322: Type '() => C1' is not assignable to type 'any[]'.
-  Property 'push' is missing in type '() => C1'.
+  Property 'pop' is missing in type '() => C1'.
 tests/cases/compiler/arrayAssignmentTest2.ts(52,1): error TS2322: Type '() => any' is not assignable to type 'any[]'.
-  Property 'push' is missing in type '() => any'.
+  Property 'pop' is missing in type '() => any'.
 tests/cases/compiler/arrayAssignmentTest2.ts(53,1): error TS2322: Type '{ one: number; }' is not assignable to type 'any[]'.
   Property 'length' is missing in type '{ one: number; }'.
 tests/cases/compiler/arrayAssignmentTest2.ts(55,1): error TS2322: Type 'C1' is not assignable to type 'any[]'.
@@ -89,11 +89,11 @@ tests/cases/compiler/arrayAssignmentTest2.ts(58,1): error TS2322: Type 'I1' is n
     arr_any = f1; // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type '() => C1' is not assignable to type 'any[]'.
-!!! error TS2322:   Property 'push' is missing in type '() => C1'.
+!!! error TS2322:   Property 'pop' is missing in type '() => C1'.
     arr_any = function () { return null;} // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type '() => any' is not assignable to type 'any[]'.
-!!! error TS2322:   Property 'push' is missing in type '() => any'.
+!!! error TS2322:   Property 'pop' is missing in type '() => any'.
     arr_any = o1; // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type '{ one: number; }' is not assignable to type 'any[]'.

tests/baselines/reference/arrayAssignmentTest4.errors.txt

@@ -1,5 +1,5 @@
 tests/cases/compiler/arrayAssignmentTest4.ts(22,1): error TS2322: Type '() => any' is not assignable to type 'any[]'.
-  Property 'push' is missing in type '() => any'.
+  Property 'pop' is missing in type '() => any'.
 tests/cases/compiler/arrayAssignmentTest4.ts(23,1): error TS2322: Type 'C3' is not assignable to type 'any[]'.
   Property 'length' is missing in type 'C3'.
 
@@ -29,7 +29,7 @@ tests/cases/compiler/arrayAssignmentTest4.ts(23,1): error TS2322: Type 'C3' is n
     arr_any = function () { return null;} // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type '() => any' is not assignable to type 'any[]'.
-!!! error TS2322:   Property 'push' is missing in type '() => any'.
+!!! error TS2322:   Property 'pop' is missing in type '() => any'.
     arr_any = c3; // should be an error - is
     ~~~~~~~
 !!! error TS2322: Type 'C3' is not assignable to type 'any[]'.

tests/baselines/reference/arrayLiterals3.errors.txt

@@ -11,12 +11,10 @@ tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(32,5): error
 tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(33,5): error TS2322: Type 'number[]' is not assignable to type '[number, number, number]'.
   Property '0' is missing in type 'number[]'.
 tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(34,5): error TS2322: Type '(string | number)[]' is not assignable to type 'myArray'.
-  Types of property 'push' are incompatible.
-    Type '(...items: (string | number)[]) => number' is not assignable to type '(...items: Number[]) => number'.
-      Types of parameters 'items' and 'items' are incompatible.
-        Type 'Number' is not assignable to type 'string | number'.
-          Type 'Number' is not assignable to type 'number'.
-            'number' is a primitive, but 'Number' is a wrapper object. Prefer using 'number' when possible.
+  Types of property 'pop' are incompatible.
+    Type '() => string | number' is not assignable to type '() => Number'.
+      Type 'string | number' is not assignable to type 'Number'.
+        Type 'string' is not assignable to type 'Number'.
 
 
 ==== tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts (8 errors) ====
@@ -75,10 +73,8 @@ tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(34,5): error
     var c2: myArray = [...temp1, ...temp];            // Error cannot assign (number|string)[] to number[]
         ~~
 !!! error TS2322: Type '(string | number)[]' is not assignable to type 'myArray'.
-!!! error TS2322:   Types of property 'push' are incompatible.
-!!! error TS2322:     Type '(...items: (string | number)[]) => number' is not assignable to type '(...items: Number[]) => number'.
-!!! error TS2322:       Types of parameters 'items' and 'items' are incompatible.
-!!! error TS2322:         Type 'Number' is not assignable to type 'string | number'.
-!!! error TS2322:           Type 'Number' is not assignable to type 'number'.
-!!! error TS2322:             'number' is a primitive, but 'Number' is a wrapper object. Prefer using 'number' when possible.
+!!! error TS2322:   Types of property 'pop' are incompatible.
+!!! error TS2322:     Type '() => string | number' is not assignable to type '() => Number'.
+!!! error TS2322:       Type 'string | number' is not assignable to type 'Number'.
+!!! error TS2322:         Type 'string' is not assignable to type 'Number'.
     

tests/baselines/reference/keyofAndIndexedAccess.types

@@ -88,7 +88,7 @@ type K10 = keyof Shape;  // "name" | "width" | "height" | "visible"
 >Shape : Shape
 
 type K11 = keyof Shape[];  // "length" | "toString" | ...
->K11 : number | "length" | "toString" | "toLocaleString" | "push" | "pop" | "concat" | "join" | "reverse" | "shift" | "slice" | "sort" | "splice" | "unshift" | "indexOf" | "lastIndexOf" | "every" | "some" | "forEach" | "map" | "filter" | "reduce" | "reduceRight"
+>K11 : number | "length" | "toString" | "toLocaleString" | "pop" | "push" | "concat" | "join" | "reverse" | "shift" | "slice" | "sort" | "splice" | "unshift" | "indexOf" | "lastIndexOf" | "every" | "some" | "forEach" | "map" | "filter" | "reduce" | "reduceRight"
 >Shape : Shape
 
 type K12 = keyof Dictionary<Shape>;  // string
@@ -108,7 +108,7 @@ type K15 = keyof E;  // "toString" | "toFixed" | "toExponential" | ...
 >E : E
 
 type K16 = keyof [string, number];  // "0" | "1" | "length" | "toString" | ...
->K16 : number | "0" | "1" | "length" | "toString" | "toLocaleString" | "push" | "pop" | "concat" | "join" | "reverse" | "shift" | "slice" | "sort" | "splice" | "unshift" | "indexOf" | "lastIndexOf" | "every" | "some" | "forEach" | "map" | "filter" | "reduce" | "reduceRight"
+>K16 : number | "0" | "1" | "length" | "toString" | "toLocaleString" | "pop" | "push" | "concat" | "join" | "reverse" | "shift" | "slice" | "sort" | "splice" | "unshift" | "indexOf" | "lastIndexOf" | "every" | "some" | "forEach" | "map" | "filter" | "reduce" | "reduceRight"
 
 type K17 = keyof (Shape | Item);  // "name"
 >K17 : "name"

tests/baselines/reference/nestedRecursiveArraysOrObjectsError01.errors.txt

@@ -0,0 +1,46 @@
+tests/cases/compiler/nestedRecursiveArraysOrObjectsError01.ts(10,9): error TS2322: Type '{ foo: string; jj: number; }[][][]' is not assignable to type 'Style'.
+  Type '{ foo: string; jj: number; }[][][]' is not assignable to type 'StyleArray'.
+    Types of property 'pop' are incompatible.
+      Type '() => { foo: string; jj: number; }[][]' is not assignable to type '() => Style'.
+        Type '{ foo: string; jj: number; }[][]' is not assignable to type 'Style'.
+          Type '{ foo: string; jj: number; }[][]' is not assignable to type 'StyleArray'.
+            Types of property 'pop' are incompatible.
+              Type '() => { foo: string; jj: number; }[]' is not assignable to type '() => Style'.
+                Type '{ foo: string; jj: number; }[]' is not assignable to type 'Style'.
+                  Type '{ foo: string; jj: number; }[]' is not assignable to type 'StyleArray'.
+                    Types of property 'pop' are incompatible.
+                      Type '() => { foo: string; jj: number; }' is not assignable to type '() => Style'.
+                        Type '{ foo: string; jj: number; }' is not assignable to type 'Style'.
+                          Object literal may only specify known properties, and 'jj' does not exist in type 'Style'.
+
+
+==== tests/cases/compiler/nestedRecursiveArraysOrObjectsError01.ts (1 errors) ====
+    type Style = StyleBase | StyleArray;
+    interface StyleArray extends Array<Style> {}
+    interface StyleBase {
+        foo: string;
+    }
+    
+    const blah: Style = [
+        [[{
+            foo: 'asdf',
+            jj: 1 // intentional error
+            ~~~~~
+!!! error TS2322: Type '{ foo: string; jj: number; }[][][]' is not assignable to type 'Style'.
+!!! error TS2322:   Type '{ foo: string; jj: number; }[][][]' is not assignable to type 'StyleArray'.
+!!! error TS2322:     Types of property 'pop' are incompatible.
+!!! error TS2322:       Type '() => { foo: string; jj: number; }[][]' is not assignable to type '() => Style'.
+!!! error TS2322:         Type '{ foo: string; jj: number; }[][]' is not assignable to type 'Style'.
+!!! error TS2322:           Type '{ foo: string; jj: number; }[][]' is not assignable to type 'StyleArray'.
+!!! error TS2322:             Types of property 'pop' are incompatible.
+!!! error TS2322:               Type '() => { foo: string; jj: number; }[]' is not assignable to type '() => Style'.
+!!! error TS2322:                 Type '{ foo: string; jj: number; }[]' is not assignable to type 'Style'.
+!!! error TS2322:                   Type '{ foo: string; jj: number; }[]' is not assignable to type 'StyleArray'.
+!!! error TS2322:                     Types of property 'pop' are incompatible.
+!!! error TS2322:                       Type '() => { foo: string; jj: number; }' is not assignable to type '() => Style'.
+!!! error TS2322:                         Type '{ foo: string; jj: number; }' is not assignable to type 'Style'.
+!!! error TS2322:                           Object literal may only specify known properties, and 'jj' does not exist in type 'Style'.
+        }]]
+    ];
+    
+    

tests/baselines/reference/nestedRecursiveArraysOrObjectsError01.js

@@ -0,0 +1,23 @@
+//// [nestedRecursiveArraysOrObjectsError01.ts]
+type Style = StyleBase | StyleArray;
+interface StyleArray extends Array<Style> {}
+interface StyleBase {
+    foo: string;
+}
+
+const blah: Style = [
+    [[{
+        foo: 'asdf',
+        jj: 1 // intentional error
+    }]]
+];
+
+
+
+//// [nestedRecursiveArraysOrObjectsError01.js]
+var blah = [
+    [[{
+                foo: 'asdf',
+                jj: 1 // intentional error
+            }]]
+];

tests/baselines/reference/nestedRecursiveArraysOrObjectsError01.symbols

@@ -0,0 +1,33 @@
+=== tests/cases/compiler/nestedRecursiveArraysOrObjectsError01.ts ===
+type Style = StyleBase | StyleArray;
+>Style : Symbol(Style, Decl(nestedRecursiveArraysOrObjectsError01.ts, 0, 0))
+>StyleBase : Symbol(StyleBase, Decl(nestedRecursiveArraysOrObjectsError01.ts, 1, 44))
+>StyleArray : Symbol(StyleArray, Decl(nestedRecursiveArraysOrObjectsError01.ts, 0, 36))
+
+interface StyleArray extends Array<Style> {}
+>StyleArray : Symbol(StyleArray, Decl(nestedRecursiveArraysOrObjectsError01.ts, 0, 36))
+>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
+>Style : Symbol(Style, Decl(nestedRecursiveArraysOrObjectsError01.ts, 0, 0))
+
+interface StyleBase {
+>StyleBase : Symbol(StyleBase, Decl(nestedRecursiveArraysOrObjectsError01.ts, 1, 44))
+
+    foo: string;
+>foo : Symbol(StyleBase.foo, Decl(nestedRecursiveArraysOrObjectsError01.ts, 2, 21))
+}
+
+const blah: Style = [
+>blah : Symbol(blah, Decl(nestedRecursiveArraysOrObjectsError01.ts, 6, 5))
+>Style : Symbol(Style, Decl(nestedRecursiveArraysOrObjectsError01.ts, 0, 0))
+
+    [[{
+        foo: 'asdf',
+>foo : Symbol(foo, Decl(nestedRecursiveArraysOrObjectsError01.ts, 7, 7))
+
+        jj: 1 // intentional error
+>jj : Symbol(jj, Decl(nestedRecursiveArraysOrObjectsError01.ts, 8, 20))
+
+    }]]
+];
+
+

tests/baselines/reference/nestedRecursiveArraysOrObjectsError01.types

@@ -0,0 +1,40 @@
+=== tests/cases/compiler/nestedRecursiveArraysOrObjectsError01.ts ===
+type Style = StyleBase | StyleArray;
+>Style : Style
+>StyleBase : StyleBase
+>StyleArray : StyleArray
+
+interface StyleArray extends Array<Style> {}
+>StyleArray : StyleArray
+>Array : T[]
+>Style : Style
+
+interface StyleBase {
+>StyleBase : StyleBase
+
+    foo: string;
+>foo : string
+}
+
+const blah: Style = [
+>blah : Style
+>Style : Style
+>[    [[{        foo: 'asdf',        jj: 1 // intentional error    }]]] : { foo: string; jj: number; }[][][]
+
+    [[{
+>[[{        foo: 'asdf',        jj: 1 // intentional error    }]] : { foo: string; jj: number; }[][]
+>[{        foo: 'asdf',        jj: 1 // intentional error    }] : { foo: string; jj: number; }[]
+>{        foo: 'asdf',        jj: 1 // intentional error    } : { foo: string; jj: number; }
+
+        foo: 'asdf',
+>foo : string
+>'asdf' : "asdf"
+
+        jj: 1 // intentional error
+>jj : number
+>1 : 1
+
+    }]]
+];
+
+

tests/baselines/reference/restInvalidArgumentType.types

@@ -87,7 +87,7 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
 >p1 : T
 
     var {...r2} = p2;   // OK
->r2 : { [n: number]: T; length: number; toString(): string; toLocaleString(): string; push(...items: T[]): number; pop(): T; concat(...items: ConcatArray<T>[]): T[]; concat(...items: (T | ConcatArray<T>)[]): T[]; join(separator?: string): string; reverse(): T[]; shift(): T; slice(start?: number, end?: number): T[]; sort(compareFn?: (a: T, b: T) => number): T[]; splice(start: number, deleteCount?: number): T[]; splice(start: number, deleteCount: number, ...items: T[]): T[]; unshift(...items: T[]): number; indexOf(searchElement: T, fromIndex?: number): number; lastIndexOf(searchElement: T, fromIndex?: number): number; every(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; some(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void; map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[]; filter<S extends T>(callbackfn: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[]; filter(callbackfn: (value: T, index: number, array: T[]) => any, thisArg?: any): T[]; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; }
+>r2 : { [n: number]: T; length: number; toString(): string; toLocaleString(): string; pop(): T; push(...items: T[]): number; concat(...items: ConcatArray<T>[]): T[]; concat(...items: (T | ConcatArray<T>)[]): T[]; join(separator?: string): string; reverse(): T[]; shift(): T; slice(start?: number, end?: number): T[]; sort(compareFn?: (a: T, b: T) => number): T[]; splice(start: number, deleteCount?: number): T[]; splice(start: number, deleteCount: number, ...items: T[]): T[]; unshift(...items: T[]): number; indexOf(searchElement: T, fromIndex?: number): number; lastIndexOf(searchElement: T, fromIndex?: number): number; every(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; some(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void; map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[]; filter<S extends T>(callbackfn: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[]; filter(callbackfn: (value: T, index: number, array: T[]) => any, thisArg?: any): T[]; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; }
 >p2 : T[]
 
     var {...r3} = t;   // Error, generic type paramter

tests/baselines/reference/spreadInvalidArgumentType.types

@@ -89,8 +89,8 @@ function f<T extends { b: string }>(p1: T, p2: T[]) {
 >p1 : T
 
     var o2 = { ...p2 };   // OK
->o2 : { [x: number]: T; length: number; toString(): string; toLocaleString(): string; push(...items: T[]): number; pop(): T; concat(...items: ConcatArray<T>[]): T[]; concat(...items: (T | ConcatArray<T>)[]): T[]; join(separator?: string): string; reverse(): T[]; shift(): T; slice(start?: number, end?: number): T[]; sort(compareFn?: (a: T, b: T) => number): T[]; splice(start: number, deleteCount?: number): T[]; splice(start: number, deleteCount: number, ...items: T[]): T[]; unshift(...items: T[]): number; indexOf(searchElement: T, fromIndex?: number): number; lastIndexOf(searchElement: T, fromIndex?: number): number; every(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; some(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void; map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[]; filter<S extends T>(callbackfn: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[]; filter(callbackfn: (value: T, index: number, array: T[]) => any, thisArg?: any): T[]; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; }
->{ ...p2 } : { [n: number]: T; length: number; toString(): string; toLocaleString(): string; push(...items: T[]): number; pop(): T; concat(...items: ConcatArray<T>[]): T[]; concat(...items: (T | ConcatArray<T>)[]): T[]; join(separator?: string): string; reverse(): T[]; shift(): T; slice(start?: number, end?: number): T[]; sort(compareFn?: (a: T, b: T) => number): T[]; splice(start: number, deleteCount?: number): T[]; splice(start: number, deleteCount: number, ...items: T[]): T[]; unshift(...items: T[]): number; indexOf(searchElement: T, fromIndex?: number): number; lastIndexOf(searchElement: T, fromIndex?: number): number; every(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; some(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void; map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[]; filter<S extends T>(callbackfn: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[]; filter(callbackfn: (value: T, index: number, array: T[]) => any, thisArg?: any): T[]; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; }
+>o2 : { [x: number]: T; length: number; toString(): string; toLocaleString(): string; pop(): T; push(...items: T[]): number; concat(...items: ConcatArray<T>[]): T[]; concat(...items: (T | ConcatArray<T>)[]): T[]; join(separator?: string): string; reverse(): T[]; shift(): T; slice(start?: number, end?: number): T[]; sort(compareFn?: (a: T, b: T) => number): T[]; splice(start: number, deleteCount?: number): T[]; splice(start: number, deleteCount: number, ...items: T[]): T[]; unshift(...items: T[]): number; indexOf(searchElement: T, fromIndex?: number): number; lastIndexOf(searchElement: T, fromIndex?: number): number; every(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; some(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void; map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[]; filter<S extends T>(callbackfn: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[]; filter(callbackfn: (value: T, index: number, array: T[]) => any, thisArg?: any): T[]; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; }
+>{ ...p2 } : { [n: number]: T; length: number; toString(): string; toLocaleString(): string; pop(): T; push(...items: T[]): number; concat(...items: ConcatArray<T>[]): T[]; concat(...items: (T | ConcatArray<T>)[]): T[]; join(separator?: string): string; reverse(): T[]; shift(): T; slice(start?: number, end?: number): T[]; sort(compareFn?: (a: T, b: T) => number): T[]; splice(start: number, deleteCount?: number): T[]; splice(start: number, deleteCount: number, ...items: T[]): T[]; unshift(...items: T[]): number; indexOf(searchElement: T, fromIndex?: number): number; lastIndexOf(searchElement: T, fromIndex?: number): number; every(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; some(callbackfn: (value: T, index: number, array: T[]) => boolean, thisArg?: any): boolean; forEach(callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any): void; map<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any): U[]; filter<S extends T>(callbackfn: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[]; filter(callbackfn: (value: T, index: number, array: T[]) => any, thisArg?: any): T[]; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T; reduceRight(callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T; reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U; }
 >p2 : T[]
 
     var o3 = { ...t };   // Error, generic type paramter

tests/cases/compiler/nestedRecursiveArraysOrObjectsError01.ts

@@ -0,0 +1,13 @@
+type Style = StyleBase | StyleArray;
+interface StyleArray extends Array<Style> {}
+interface StyleBase {
+    foo: string;
+}
+
+const blah: Style = [
+    [[{
+        foo: 'asdf',
+        jj: 1 // intentional error
+    }]]
+];
+