Put error spans deep on nested object literals (microsoft#25140)

* Add ncie deep elaborations

* Nice stuff

* Modify tuple error to use length error mroe often

* Accept good baselines

* Accept meh baselines

* Fix literal types

* Calculate elaborations like it was the very first time again~

* Use tristate for enum relationship to ensure elaborations are printed at least once

* Update message text, nits

* move some functions back to where they were

* Add test of deep JSX elaboration

* Add elaboration test with parenthesized expressions, comma expressions, and assignments

* Move check to allow elaborations on more anonymous types

* Fix nits

* Add specialized error to elaborations of nonliteral computed named-members

* Update error message

Author: weswigham

src/compiler/checker.ts

@@ -1452,6 +1452,10 @@
         "category": "Error",
         "code": 2417
     },
+    "Type of computed property's value is '{0}', which is not assignable to type '{1}'.": {
+        "category": "Error",
+        "code": 2418
+    },
     "Class '{0}' incorrectly implements interface '{1}'.": {
         "category": "Error",
         "code": 2420
@@ -3754,6 +3758,15 @@
         "code": 6371
     },
 
+    "The expected type comes from property '{0}' which is declared here on type '{1}'": {
+        "category": "Message",
+        "code": 6500
+    },
+    "The expected type comes from this index signature.": {
+        "category": "Message",
+        "code": 6501
+    },
+
     "Variable '{0}' implicitly has an '{1}' type.": {
         "category": "Error",
         "code": 7005

src/compiler/diagnosticMessages.json

@@ -1,7 +1,7 @@
 {
     "compilerOptions": {
         "pretty": true,
-        "lib": ["es5"],
+        "lib": ["es2015"],
         "target": "es5",
 
         "declaration": true,

src/tsconfig-base.json

@@ -5193,6 +5193,7 @@ declare namespace ts {
         Class_0_incorrectly_extends_base_class_1: DiagnosticMessage;
         Property_0_in_type_1_is_not_assignable_to_the_same_property_in_base_type_2: DiagnosticMessage;
         Class_static_side_0_incorrectly_extends_base_class_static_side_1: DiagnosticMessage;
+        Type_of_computed_property_s_value_is_0_which_is_not_assignable_to_type_1: DiagnosticMessage;
         Class_0_incorrectly_implements_interface_1: DiagnosticMessage;
         A_class_may_only_implement_another_class_or_interface: DiagnosticMessage;
         Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor: DiagnosticMessage;
@@ -5765,6 +5766,8 @@ declare namespace ts {
         Option_build_must_be_the_first_command_line_argument: DiagnosticMessage;
         Options_0_and_1_cannot_be_combined: DiagnosticMessage;
         Skipping_clean_because_not_all_projects_could_be_located: DiagnosticMessage;
+        The_expected_type_comes_from_property_0_which_is_declared_here_on_type_1: DiagnosticMessage;
+        The_expected_type_comes_from_this_index_signature: DiagnosticMessage;
         Variable_0_implicitly_has_an_1_type: DiagnosticMessage;
         Parameter_0_implicitly_has_an_1_type: DiagnosticMessage;
         Member_0_implicitly_has_an_1_type: DiagnosticMessage;

tests/baselines/reference/api/tsserverlibrary.d.ts

@@ -1,7 +1,8 @@
 tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(10,5): error TS2322: Type '[]' is not assignable to type '[any, any, any]'.
   Property '0' is missing in type '[]'.
-tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,5): error TS2322: Type '[string, number, boolean]' is not assignable to type '[boolean, string, number]'.
-  Type 'string' is not assignable to type 'boolean'.
+tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,38): error TS2322: Type 'string' is not assignable to type 'boolean'.
+tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,48): error TS2322: Type 'number' is not assignable to type 'string'.
+tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(11,51): error TS2322: Type 'true' is not assignable to type 'number'.
 tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(17,5): error TS2322: Type '[number, number, string, boolean]' is not assignable to type '[number, number]'.
   Types of property 'length' are incompatible.
     Type '4' is not assignable to type '2'.
@@ -18,7 +19,7 @@ tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(34,5): error
             'number' is a primitive, but 'Number' is a wrapper object. Prefer using 'number' when possible.
 
 
-==== tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts (6 errors) ====
+==== tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts (8 errors) ====
     // Each element expression in a non-empty array literal is processed as follows:
     //    - If the array literal contains no spread elements, and if the array literal is contextually typed (section 4.19)
     //      by a type T and T has a property with the numeric name N, where N is the index of the element expression in the array literal,
@@ -33,9 +34,12 @@ tests/cases/conformance/expressions/arrayLiterals/arrayLiterals3.ts(34,5): error
 !!! error TS2322: Type '[]' is not assignable to type '[any, any, any]'.
 !!! error TS2322:   Property '0' is missing in type '[]'.
     var a1: [boolean, string, number] = ["string", 1, true];  // Error
-        ~~
-!!! error TS2322: Type '[string, number, boolean]' is not assignable to type '[boolean, string, number]'.
-!!! error TS2322:   Type 'string' is not assignable to type 'boolean'.
+                                         ~~~~~~~~
+!!! error TS2322: Type 'string' is not assignable to type 'boolean'.
+                                                   ~
+!!! error TS2322: Type 'number' is not assignable to type 'string'.
+                                                      ~~~~
+!!! error TS2322: Type 'true' is not assignable to type 'number'.
 
     // The resulting type an array literal expression is determined as follows:
     //     - If the array literal contains no spread elements and is an array assignment pattern in a destructuring assignment (section 4.17.1),

tests/baselines/reference/arrayLiterals3.errors.txt

@@ -1,6 +1,4 @@
-tests/cases/compiler/assignmentToObjectAndFunction.ts(1,5): error TS2322: Type '{ toString: number; }' is not assignable to type 'Object'.
-  Types of property 'toString' are incompatible.
-    Type 'number' is not assignable to type '() => string'.
+tests/cases/compiler/assignmentToObjectAndFunction.ts(1,24): error TS2322: Type 'number' is not assignable to type '() => string'.
 tests/cases/compiler/assignmentToObjectAndFunction.ts(8,5): error TS2322: Type '{}' is not assignable to type 'Function'.
   Property 'apply' is missing in type '{}'.
 tests/cases/compiler/assignmentToObjectAndFunction.ts(29,5): error TS2322: Type 'typeof bad' is not assignable to type 'Function'.
@@ -10,10 +8,9 @@ tests/cases/compiler/assignmentToObjectAndFunction.ts(29,5): error TS2322: Type
 
 ==== tests/cases/compiler/assignmentToObjectAndFunction.ts (3 errors) ====
     var errObj: Object = { toString: 0 }; // Error, incompatible toString
-        ~~~~~~
-!!! error TS2322: Type '{ toString: number; }' is not assignable to type 'Object'.
-!!! error TS2322:   Types of property 'toString' are incompatible.
-!!! error TS2322:     Type 'number' is not assignable to type '() => string'.
+                           ~~~~~~~~
+!!! error TS2322: Type 'number' is not assignable to type '() => string'.
+!!! related TS6500 /.ts/lib.es5.d.ts:125:5: The expected type comes from property 'toString' which is declared here on type 'Object'
     var goodObj: Object = {
         toString(x?) {
             return "";

tests/baselines/reference/assignmentToObjectAndFunction.errors.txt

@@ -6,15 +6,9 @@ tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesize
 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(17,1): error TS2539: Cannot assign to 'M' because it is not a variable.
 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(18,2): error TS2539: Cannot assign to 'M' because it is not a variable.
 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(25,5): error TS2539: Cannot assign to 'M3' because it is not a variable.
-tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(31,1): error TS2322: Type '{ x: string; }' is not assignable to type 'typeof M3'.
-  Types of property 'x' are incompatible.
-    Type 'string' is not assignable to type 'number'.
-tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(32,1): error TS2322: Type '{ x: string; }' is not assignable to type 'typeof M3'.
-  Types of property 'x' are incompatible.
-    Type 'string' is not assignable to type 'number'.
-tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(33,1): error TS2322: Type '{ x: string; }' is not assignable to type 'typeof M3'.
-  Types of property 'x' are incompatible.
-    Type 'string' is not assignable to type 'number'.
+tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(31,11): error TS2322: Type 'string' is not assignable to type 'number'.
+tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(32,13): error TS2322: Type 'string' is not assignable to type 'number'.
+tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(33,13): error TS2322: Type 'string' is not assignable to type 'number'.
 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(37,1): error TS2539: Cannot assign to 'fn' because it is not a variable.
 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(38,2): error TS2539: Cannot assign to 'fn' because it is not a variable.
 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts(43,5): error TS2322: Type '""' is not assignable to type 'number'.
@@ -78,20 +72,17 @@ tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesize
     (M2.M3) = { x: 3 }; // OK
 
     M2.M3 = { x: '' }; // Error
-    ~~~~~
-!!! error TS2322: Type '{ x: string; }' is not assignable to type 'typeof M3'.
-!!! error TS2322:   Types of property 'x' are incompatible.
-!!! error TS2322:     Type 'string' is not assignable to type 'number'.
+              ~
+!!! error TS2322: Type 'string' is not assignable to type 'number'.
+!!! related TS6500 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts:22:20: The expected type comes from property 'x' which is declared here on type 'typeof M3'
     (M2).M3 = { x: '' }; // Error
-    ~~~~~~~
-!!! error TS2322: Type '{ x: string; }' is not assignable to type 'typeof M3'.
-!!! error TS2322:   Types of property 'x' are incompatible.
-!!! error TS2322:     Type 'string' is not assignable to type 'number'.
+                ~
+!!! error TS2322: Type 'string' is not assignable to type 'number'.
+!!! related TS6500 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts:22:20: The expected type comes from property 'x' which is declared here on type 'typeof M3'
     (M2.M3) = { x: '' }; // Error
-    ~~~~~~~
-!!! error TS2322: Type '{ x: string; }' is not assignable to type 'typeof M3'.
-!!! error TS2322:   Types of property 'x' are incompatible.
-!!! error TS2322:     Type 'string' is not assignable to type 'number'.
+                ~
+!!! error TS2322: Type 'string' is not assignable to type 'number'.
+!!! related TS6500 tests/cases/conformance/expressions/valuesAndReferences/assignmentToParenthesizedIdentifiers.ts:22:20: The expected type comes from property 'x' which is declared here on type 'typeof M3'
 
 
     function fn() { }

tests/baselines/reference/assignmentToParenthesizedIdentifiers.errors.txt

@@ -5,7 +5,6 @@ tests/cases/compiler/baseClassImprovedMismatchErrors.ts(8,5): error TS2416: Prop
         Types of property 'n' are incompatible.
           Type 'string | Derived' is not assignable to type 'string | Base'.
             Type 'Derived' is not assignable to type 'string | Base'.
-              Type 'Derived' is not assignable to type 'Base'.
 tests/cases/compiler/baseClassImprovedMismatchErrors.ts(9,5): error TS2416: Property 'fn' in type 'Derived' is not assignable to the same property in base type 'Base'.
   Type '() => string | number' is not assignable to type '() => number'.
     Type 'string | number' is not assignable to type 'number'.
@@ -17,7 +16,6 @@ tests/cases/compiler/baseClassImprovedMismatchErrors.ts(14,5): error TS2416: Pro
         Types of property 'n' are incompatible.
           Type 'string | DerivedInterface' is not assignable to type 'string | Base'.
             Type 'DerivedInterface' is not assignable to type 'string | Base'.
-              Type 'DerivedInterface' is not assignable to type 'Base'.
 tests/cases/compiler/baseClassImprovedMismatchErrors.ts(15,5): error TS2416: Property 'fn' in type 'DerivedInterface' is not assignable to the same property in base type 'Base'.
   Type '() => string | number' is not assignable to type '() => number'.
     Type 'string | number' is not assignable to type 'number'.
@@ -41,7 +39,6 @@ tests/cases/compiler/baseClassImprovedMismatchErrors.ts(15,5): error TS2416: Pro
 !!! error TS2416:         Types of property 'n' are incompatible.
 !!! error TS2416:           Type 'string | Derived' is not assignable to type 'string | Base'.
 !!! error TS2416:             Type 'Derived' is not assignable to type 'string | Base'.
-!!! error TS2416:               Type 'Derived' is not assignable to type 'Base'.
         fn() {
         ~~
 !!! error TS2416: Property 'fn' in type 'Derived' is not assignable to the same property in base type 'Base'.
@@ -61,7 +58,6 @@ tests/cases/compiler/baseClassImprovedMismatchErrors.ts(15,5): error TS2416: Pro
 !!! error TS2416:         Types of property 'n' are incompatible.
 !!! error TS2416:           Type 'string | DerivedInterface' is not assignable to type 'string | Base'.
 !!! error TS2416:             Type 'DerivedInterface' is not assignable to type 'string | Base'.
-!!! error TS2416:               Type 'DerivedInterface' is not assignable to type 'Base'.
         fn() {
         ~~
 !!! error TS2416: Property 'fn' in type 'DerivedInterface' is not assignable to the same property in base type 'Base'.

tests/baselines/reference/baseClassImprovedMismatchErrors.errors.txt

@@ -1,6 +1,5 @@
-tests/cases/conformance/jsx/file.tsx(13,54): error TS2326: Types of property 'nextValues' are incompatible.
-  Type '(a: { x: string; }) => string' is not assignable to type '(cur: { x: string; }) => { x: string; }'.
-    Type 'string' is not assignable to type '{ x: string; }'.
+tests/cases/conformance/jsx/file.tsx(13,54): error TS2322: Type '(a: { x: string; }) => string' is not assignable to type '(cur: { x: string; }) => { x: string; }'.
+  Type 'string' is not assignable to type '{ x: string; }'.
 
 
 ==== tests/cases/conformance/jsx/file.tsx (1 errors) ====
@@ -17,7 +16,7 @@ tests/cases/conformance/jsx/file.tsx(13,54): error TS2326: Types of property 'ne
     let b = <GenericComponent initialValues={12} nextValues={a => a} />; // No error - Values should be reinstantiated with `number` (since `object` is a default, not a constraint)
     let c = <GenericComponent initialValues={{ x: "y" }} nextValues={a => ({ x: a.x })} />; // No Error
     let d = <GenericComponent initialValues={{ x: "y" }} nextValues={a => a.x} />; // Error - `string` is not assignable to `{x: string}`
-                                                         ~~~~~~~~~~~~~~~~~~~~~
-!!! error TS2326: Types of property 'nextValues' are incompatible.
-!!! error TS2326:   Type '(a: { x: string; }) => string' is not assignable to type '(cur: { x: string; }) => { x: string; }'.
-!!! error TS2326:     Type 'string' is not assignable to type '{ x: string; }'.
+                                                         ~~~~~~~~~~
+!!! error TS2322: Type '(a: { x: string; }) => string' is not assignable to type '(cur: { x: string; }) => { x: string; }'.
+!!! error TS2322:   Type 'string' is not assignable to type '{ x: string; }'.
+!!! related TS6500 tests/cases/conformance/jsx/file.tsx:13:54: The expected type comes from property 'nextValues' which is declared here on type 'IntrinsicAttributes & IntrinsicClassAttributes<GenericComponent<{ initialValues: { x: string; }; nextValues: {}; }, { x: string; }>> & { initialValues: { x: string; }; nextValues: {}; } & BaseProps<{ x: string; }> & { children?: ReactNode; }'

tests/baselines/reference/checkJsxGenericTagHasCorrectInferences.errors.txt

@@ -1,21 +1,20 @@
-tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts(6,5): error TS2322: Type '{ [x: string]: string | number; }' is not assignable to type 'I'.
-  Index signatures are incompatible.
-    Type 'string | number' is not assignable to type 'boolean'.
-      Type 'string' is not assignable to type 'boolean'.
+tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts(7,5): error TS2418: Type of computed property's value is 'string', which is not assignable to type 'boolean'.
+tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts(8,5): error TS2418: Type of computed property's value is 'number', which is not assignable to type 'boolean'.
 
 
-==== tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts (1 errors) ====
+==== tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts (2 errors) ====
     interface I {
         [s: string]: boolean;
         [s: number]: boolean;
     }
 
     var o: I = {
-        ~
-!!! error TS2322: Type '{ [x: string]: string | number; }' is not assignable to type 'I'.
-!!! error TS2322:   Index signatures are incompatible.
-!!! error TS2322:     Type 'string | number' is not assignable to type 'boolean'.
-!!! error TS2322:       Type 'string' is not assignable to type 'boolean'.
         [""+"foo"]: "",
+        ~~~~~~~~~~
+!!! error TS2418: Type of computed property's value is 'string', which is not assignable to type 'boolean'.
+!!! related TS6501 tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts:2:5: The expected type comes from this index signature.
         [""+"bar"]: 0
+        ~~~~~~~~~~
+!!! error TS2418: Type of computed property's value is 'number', which is not assignable to type 'boolean'.
+!!! related TS6501 tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES5.ts:2:5: The expected type comes from this index signature.
     }

tests/baselines/reference/computedPropertyNamesContextualType8_ES5.errors.txt

@@ -1,21 +1,20 @@
-tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts(6,5): error TS2322: Type '{ [x: string]: string | number; }' is not assignable to type 'I'.
-  Index signatures are incompatible.
-    Type 'string | number' is not assignable to type 'boolean'.
-      Type 'string' is not assignable to type 'boolean'.
+tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts(7,5): error TS2418: Type of computed property's value is 'string', which is not assignable to type 'boolean'.
+tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts(8,5): error TS2418: Type of computed property's value is 'number', which is not assignable to type 'boolean'.
 
 
-==== tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts (1 errors) ====
+==== tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts (2 errors) ====
     interface I {
         [s: string]: boolean;
         [s: number]: boolean;
     }
 
     var o: I = {
-        ~
-!!! error TS2322: Type '{ [x: string]: string | number; }' is not assignable to type 'I'.
-!!! error TS2322:   Index signatures are incompatible.
-!!! error TS2322:     Type 'string | number' is not assignable to type 'boolean'.
-!!! error TS2322:       Type 'string' is not assignable to type 'boolean'.
         [""+"foo"]: "",
+        ~~~~~~~~~~
+!!! error TS2418: Type of computed property's value is 'string', which is not assignable to type 'boolean'.
+!!! related TS6501 tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts:2:5: The expected type comes from this index signature.
         [""+"bar"]: 0
+        ~~~~~~~~~~
+!!! error TS2418: Type of computed property's value is 'number', which is not assignable to type 'boolean'.
+!!! related TS6501 tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType8_ES6.ts:2:5: The expected type comes from this index signature.
     }