Increase size of span for unused declaration

src/compiler/checker.ts

@@ -21614,7 +21614,7 @@ namespace ts {
             }
 
             if (!isRemovedPropertyFromObjectSpread(node.kind === SyntaxKind.Identifier ? node.parent : node)) {
-                error(node, Diagnostics._0_is_declared_but_its_value_is_never_read, name);
+                diagnostics.add(createDiagnosticForNodeSpan(getSourceFileOfNode(declaration), declaration, node, Diagnostics._0_is_declared_but_its_value_is_never_read, name));
             }
         }
 
@@ -21623,7 +21623,7 @@ namespace ts {
         }
 
         function isIdentifierThatStartsWithUnderScore(node: Node) {
-            return node.kind === SyntaxKind.Identifier && idText(<Identifier>node).charCodeAt(0) === CharacterCodes._;
+            return isIdentifier(node) && idText(node).charCodeAt(0) === CharacterCodes._;
         }
 
         function checkUnusedClassMembers(node: ClassDeclaration | ClassExpression): void {

src/compiler/utilities.ts

@@ -607,6 +607,11 @@ namespace ts {
         return createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2, arg3);
     }
 
+    export function createDiagnosticForNodeSpan(sourceFile: SourceFile, startNode: Node, endNode: Node, message: DiagnosticMessage, arg0?: string | number, arg1?: string | number, arg2?: string | number, arg3?: string | number): Diagnostic {
+        const start = skipTrivia(sourceFile.text, startNode.pos);
+        return createFileDiagnostic(sourceFile, start, endNode.end - start, message, arg0, arg1, arg2, arg3);
+    }
+
     export function createDiagnosticForNodeFromMessageChain(node: Node, messageChain: DiagnosticMessageChain): Diagnostic {
         const sourceFile = getSourceFileOfNode(node);
         const span = getErrorSpanForNode(sourceFile, node);

src/services/codefixes/fixUnusedIdentifier.ts

@@ -10,7 +10,7 @@ namespace ts.codefix {
         errorCodes,
         getCodeActions(context) {
             const { sourceFile } = context;
-            const token = getToken(sourceFile, context.span.start);
+            const token = getToken(sourceFile, textSpanEnd(context.span));
             const result: CodeFixAction[] = [];
 
             const deletion = textChanges.ChangeTracker.with(context, t => tryDeleteDeclaration(t, sourceFile, token));
@@ -30,7 +30,7 @@ namespace ts.codefix {
         fixIds: [fixIdPrefix, fixIdDelete],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {
             const { sourceFile } = context;
-            const token = getToken(diag.file!, diag.start!);
+            const token = findPrecedingToken(textSpanEnd(diag), diag.file!);
             switch (context.fixId) {
                 case fixIdPrefix:
                     if (isIdentifier(token) && canPrefix(token)) {
@@ -47,9 +47,9 @@ namespace ts.codefix {
     });
 
     function getToken(sourceFile: SourceFile, pos: number): Node {
-        const token = getTokenAtPosition(sourceFile, pos, /*includeJsDocComment*/ false);
+        const token = findPrecedingToken(pos, sourceFile);
         // this handles var ["computed"] = 12;
-        return token.kind === SyntaxKind.OpenBracketToken ? getTokenAtPosition(sourceFile, pos + 1, /*includeJsDocComment*/ false) : token;
+        return token.kind === SyntaxKind.CloseBracketToken ? findPrecedingToken(pos - 1, sourceFile) : token;
     }
 
     function tryPrefixDeclaration(changes: textChanges.ChangeTracker, errorCode: number, sourceFile: SourceFile, token: Node): void {

tests/baselines/reference/noUnusedLocals_selfReference.errors.txt

@@ -1,42 +1,42 @@
-tests/cases/compiler/noUnusedLocals_selfReference.ts(3,10): error TS6133: 'f' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference.ts(5,14): error TS6133: 'g' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference.ts(9,7): error TS6133: 'C' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference.ts(12,6): error TS6133: 'E' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference.ts(13,11): error TS6133: 'I' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference.ts(14,6): error TS6133: 'T' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference.ts(15,11): error TS6133: 'N' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(3,1): error TS6133: 'f' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(5,5): error TS6133: 'g' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(9,1): error TS6133: 'C' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(12,1): error TS6133: 'E' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(13,1): error TS6133: 'I' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(14,1): error TS6133: 'T' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference.ts(15,1): error TS6133: 'N' is declared but its value is never read.
 tests/cases/compiler/noUnusedLocals_selfReference.ts(22,19): error TS6133: 'm' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/noUnusedLocals_selfReference.ts (8 errors) ====
     export {}; // Make this a module scope, so these are local variables.
 
     function f() {
-             ~
+    ~~~~~~~~~~
 !!! error TS6133: 'f' is declared but its value is never read.
         f;
         function g() {
-                 ~
+        ~~~~~~~~~~
 !!! error TS6133: 'g' is declared but its value is never read.
             g;
         }
     }
     class C {
-          ~
+    ~~~~~~~
 !!! error TS6133: 'C' is declared but its value is never read.
         m() { C; }
     }
     enum E { A = 0, B = E.A }
-         ~
+    ~~~~~~
 !!! error TS6133: 'E' is declared but its value is never read.
     interface I { x: I };
-              ~
+    ~~~~~~~~~~~
 !!! error TS6133: 'I' is declared but its value is never read.
     type T = { x: T };
-         ~
+    ~~~~~~
 !!! error TS6133: 'T' is declared but its value is never read.
     namespace N { N; }
-              ~
+    ~~~~~~~~~~~
 !!! error TS6133: 'N' is declared but its value is never read.
 
     // Avoid a false positive.

tests/baselines/reference/noUnusedLocals_selfReference_skipsBlockLocations.errors.txt

@@ -1,26 +1,26 @@
-tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts(2,14): error TS6133: 'f' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts(8,22): error TS6133: 'g' is declared but its value is never read.
-tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts(12,22): error TS6133: 'h' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts(2,5): error TS6133: 'f' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts(8,13): error TS6133: 'g' is declared but its value is never read.
+tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts(12,13): error TS6133: 'h' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/noUnusedLocals_selfReference_skipsBlockLocations.ts (3 errors) ====
     namespace n {
         function f() {
-                 ~
+        ~~~~~~~~~~
 !!! error TS6133: 'f' is declared but its value is never read.
             f;
         }
 
         switch (0) {
             case 0:
                 function g() {
-                         ~
+                ~~~~~~~~~~
 !!! error TS6133: 'g' is declared but its value is never read.
                     g;
                 }
             default:
                 function h() {
-                         ~
+                ~~~~~~~~~~
 !!! error TS6133: 'h' is declared but its value is never read.
                     h;
                 }

tests/baselines/reference/unusedClassesinModule1.errors.txt

@@ -1,10 +1,10 @@
-tests/cases/compiler/unusedClassesinModule1.ts(2,11): error TS6133: 'Calculator' is declared but its value is never read.
+tests/cases/compiler/unusedClassesinModule1.ts(2,5): error TS6133: 'Calculator' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedClassesinModule1.ts (1 errors) ====
     module A {
         class Calculator {
-              ~~~~~~~~~~
+        ~~~~~~~~~~~~~~~~
 !!! error TS6133: 'Calculator' is declared but its value is never read.
             public handelChar() {
             }

tests/baselines/reference/unusedClassesinNamespace1.errors.txt

@@ -1,10 +1,10 @@
-tests/cases/compiler/unusedClassesinNamespace1.ts(2,11): error TS6133: 'c1' is declared but its value is never read.
+tests/cases/compiler/unusedClassesinNamespace1.ts(2,5): error TS6133: 'c1' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedClassesinNamespace1.ts (1 errors) ====
     namespace Validation {
         class c1 {
-              ~~
+        ~~~~~~~~
 !!! error TS6133: 'c1' is declared but its value is never read.
 
         }

tests/baselines/reference/unusedClassesinNamespace2.errors.txt

@@ -1,10 +1,10 @@
-tests/cases/compiler/unusedClassesinNamespace2.ts(2,11): error TS6133: 'c1' is declared but its value is never read.
+tests/cases/compiler/unusedClassesinNamespace2.ts(2,5): error TS6133: 'c1' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedClassesinNamespace2.ts (1 errors) ====
     namespace Validation {
         class c1 {
-              ~~
+        ~~~~~~~~
 !!! error TS6133: 'c1' is declared but its value is never read.
 
         }

tests/baselines/reference/unusedClassesinNamespace4.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/unusedClassesinNamespace4.ts(10,11): error TS6133: 'c3' is declared but its value is never read.
+tests/cases/compiler/unusedClassesinNamespace4.ts(10,5): error TS6133: 'c3' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedClassesinNamespace4.ts (1 errors) ====
@@ -12,7 +12,7 @@ tests/cases/compiler/unusedClassesinNamespace4.ts(10,11): error TS6133: 'c3' is
         }
 
         class c3 extends c1 {
-              ~~
+        ~~~~~~~~
 !!! error TS6133: 'c3' is declared but its value is never read.
 
         }

tests/baselines/reference/unusedClassesinNamespace5.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/unusedClassesinNamespace5.ts(10,11): error TS6133: 'c3' is declared but its value is never read.
+tests/cases/compiler/unusedClassesinNamespace5.ts(10,5): error TS6133: 'c3' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedClassesinNamespace5.ts (1 errors) ====
@@ -12,7 +12,7 @@ tests/cases/compiler/unusedClassesinNamespace5.ts(10,11): error TS6133: 'c3' is
         }
 
         class c3 {
-              ~~
+        ~~~~~~~~
 !!! error TS6133: 'c3' is declared but its value is never read.
             public x: c1;
         }

tests/baselines/reference/unusedFunctionsinNamespaces1.errors.txt

@@ -1,10 +1,10 @@
-tests/cases/compiler/unusedFunctionsinNamespaces1.ts(2,14): error TS6133: 'function1' is declared but its value is never read.
+tests/cases/compiler/unusedFunctionsinNamespaces1.ts(2,5): error TS6133: 'function1' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedFunctionsinNamespaces1.ts (1 errors) ====
     namespace Validation {
         function function1() {
-                 ~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'function1' is declared but its value is never read.
         }
     }

tests/baselines/reference/unusedFunctionsinNamespaces5.errors.txt

@@ -1,5 +1,5 @@
-tests/cases/compiler/unusedFunctionsinNamespaces5.ts(9,14): error TS6133: 'function3' is declared but its value is never read.
-tests/cases/compiler/unusedFunctionsinNamespaces5.ts(13,14): error TS6133: 'function4' is declared but its value is never read.
+tests/cases/compiler/unusedFunctionsinNamespaces5.ts(9,5): error TS6133: 'function3' is declared but its value is never read.
+tests/cases/compiler/unusedFunctionsinNamespaces5.ts(13,5): error TS6133: 'function4' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedFunctionsinNamespaces5.ts (2 errors) ====
@@ -12,13 +12,13 @@ tests/cases/compiler/unusedFunctionsinNamespaces5.ts(13,14): error TS6133: 'func
         }
 
         function function3() {
-                 ~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'function3' is declared but its value is never read.
             function1();
         }
 
         function function4() {
-                 ~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'function4' is declared but its value is never read.
 
         }

tests/baselines/reference/unusedFunctionsinNamespaces6.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/unusedFunctionsinNamespaces6.ts(13,14): error TS6133: 'function4' is declared but its value is never read.
+tests/cases/compiler/unusedFunctionsinNamespaces6.ts(13,5): error TS6133: 'function4' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedFunctionsinNamespaces6.ts (1 errors) ====
@@ -15,7 +15,7 @@ tests/cases/compiler/unusedFunctionsinNamespaces6.ts(13,14): error TS6133: 'func
         }
 
         function function4() {
-                 ~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'function4' is declared but its value is never read.
 
         }

tests/baselines/reference/unusedIdentifiersConsolidated1.errors.txt

@@ -10,11 +10,11 @@ tests/cases/compiler/unusedIdentifiersConsolidated1.ts(17,13): error TS6133: 'un
 tests/cases/compiler/unusedIdentifiersConsolidated1.ts(24,13): error TS6133: 'unUsedPrivateFunction' is declared but its value is never read.
 tests/cases/compiler/unusedIdentifiersConsolidated1.ts(37,11): error TS6133: 'numberRegexp' is declared but its value is never read.
 tests/cases/compiler/unusedIdentifiersConsolidated1.ts(44,17): error TS6133: 'unUsedPrivateFunction' is declared but its value is never read.
-tests/cases/compiler/unusedIdentifiersConsolidated1.ts(57,15): error TS6133: 'usedLocallyInterface2' is declared but its value is never read.
-tests/cases/compiler/unusedIdentifiersConsolidated1.ts(64,11): error TS6133: 'dummy' is declared but its value is never read.
-tests/cases/compiler/unusedIdentifiersConsolidated1.ts(67,15): error TS6133: 'unusedInterface' is declared but its value is never read.
-tests/cases/compiler/unusedIdentifiersConsolidated1.ts(79,11): error TS6133: 'class3' is declared but its value is never read.
-tests/cases/compiler/unusedIdentifiersConsolidated1.ts(99,15): error TS6133: 'interface5' is declared but its value is never read.
+tests/cases/compiler/unusedIdentifiersConsolidated1.ts(57,5): error TS6133: 'usedLocallyInterface2' is declared but its value is never read.
+tests/cases/compiler/unusedIdentifiersConsolidated1.ts(64,5): error TS6133: 'dummy' is declared but its value is never read.
+tests/cases/compiler/unusedIdentifiersConsolidated1.ts(67,5): error TS6133: 'unusedInterface' is declared but its value is never read.
+tests/cases/compiler/unusedIdentifiersConsolidated1.ts(79,5): error TS6133: 'class3' is declared but its value is never read.
+tests/cases/compiler/unusedIdentifiersConsolidated1.ts(99,5): error TS6133: 'interface5' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedIdentifiersConsolidated1.ts (17 errors) ====
@@ -99,7 +99,7 @@ tests/cases/compiler/unusedIdentifiersConsolidated1.ts(99,15): error TS6133: 'in
         }
 
         interface usedLocallyInterface2 {
-                  ~~~~~~~~~~~~~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'usedLocallyInterface2' is declared but its value is never read.
             someFunction(s1: string): void;
         }
@@ -108,12 +108,12 @@ tests/cases/compiler/unusedIdentifiersConsolidated1.ts(99,15): error TS6133: 'in
         }
 
         class dummy implements usedLocallyInterface {
-              ~~~~~
+        ~~~~~~~~~~~
 !!! error TS6133: 'dummy' is declared but its value is never read.
         }
 
         interface unusedInterface {
-                  ~~~~~~~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'unusedInterface' is declared but its value is never read.
         }
     }
@@ -127,7 +127,7 @@ tests/cases/compiler/unusedIdentifiersConsolidated1.ts(99,15): error TS6133: 'in
         }
 
         class class3 {
-              ~~~~~~
+        ~~~~~~~~~~~~
 !!! error TS6133: 'class3' is declared but its value is never read.
         }
 
@@ -149,7 +149,7 @@ tests/cases/compiler/unusedIdentifiersConsolidated1.ts(99,15): error TS6133: 'in
         export let a: interface3;
 
         interface interface5 {
-                  ~~~~~~~~~~
+        ~~~~~~~~~~~~~~~~~~~~
 !!! error TS6133: 'interface5' is declared but its value is never read.
         }
     }

tests/baselines/reference/unusedImports10.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/unusedImports10.ts(9,12): error TS6133: 'a' is declared but its value is never read.
+tests/cases/compiler/unusedImports10.ts(9,5): error TS6133: 'a' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/unusedImports10.ts (1 errors) ====
@@ -11,6 +11,6 @@ tests/cases/compiler/unusedImports10.ts(9,12): error TS6133: 'a' is declared but
 
     module B {
         import a = A;
-               ~
+        ~~~~~~~~
 !!! error TS6133: 'a' is declared but its value is never read.
     }

tests/baselines/reference/unusedImports12.errors.txt

@@ -1,8 +1,8 @@
 tests/cases/compiler/a.ts(1,10): error TS6133: 'Member' is declared but its value is never read.
 tests/cases/compiler/a.ts(2,8): error TS6133: 'd' is declared but its value is never read.
-tests/cases/compiler/a.ts(2,23): error TS6133: 'M' is declared but its value is never read.
-tests/cases/compiler/a.ts(3,13): error TS6133: 'ns' is declared but its value is never read.
-tests/cases/compiler/a.ts(4,8): error TS6133: 'r' is declared but its value is never read.
+tests/cases/compiler/a.ts(2,13): error TS6133: 'M' is declared but its value is never read.
+tests/cases/compiler/a.ts(3,8): error TS6133: 'ns' is declared but its value is never read.
+tests/cases/compiler/a.ts(4,1): error TS6133: 'r' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/a.ts (5 errors) ====
@@ -12,13 +12,13 @@ tests/cases/compiler/a.ts(4,8): error TS6133: 'r' is declared but its value is n
     import d, { Member as M } from './b';
            ~
 !!! error TS6133: 'd' is declared but its value is never read.
-                          ~
+                ~~~~~~~~~~~
 !!! error TS6133: 'M' is declared but its value is never read.
     import * as ns from './b';
-                ~~
+           ~~~~~~~
 !!! error TS6133: 'ns' is declared but its value is never read.
     import r = require("./b");
-           ~
+    ~~~~~~~~
 !!! error TS6133: 'r' is declared but its value is never read.
 
 ==== tests/cases/compiler/b.ts (0 errors) ====

tests/baselines/reference/unusedImports7.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/file2.ts(1,13): error TS6133: 'n' is declared but its value is never read.
+tests/cases/compiler/file2.ts(1,8): error TS6133: 'n' is declared but its value is never read.
 
 
 ==== tests/cases/compiler/file1.ts (0 errors) ====
@@ -16,7 +16,7 @@ tests/cases/compiler/file2.ts(1,13): error TS6133: 'n' is declared but its value
 
 ==== tests/cases/compiler/file2.ts (1 errors) ====
     import * as n from "./file1"
-                ~
+           ~~~~~~
 !!! error TS6133: 'n' is declared but its value is never read.