Merge pull request #508 from Microsoft/printDiagnosticCodes

DanielRosenwasser · DanielRosenwasser · commit b73558d2082a · 2014-08-22T16:21:44.000-07:00
Emit error codes when reporting diagnostics.
diff --git a/src/compiler/tsc.ts b/src/compiler/tsc.ts
@@ -86,13 +86,18 @@ module ts {
     }
 
     function reportDiagnostic(diagnostic: Diagnostic) {
+        var output = "";
+        
         if (diagnostic.file) {
             var loc = diagnostic.file.getLineAndCharacterFromPosition(diagnostic.start);
-            sys.write(diagnostic.file.filename + "(" + loc.line + "," + loc.character + "): " + diagnostic.messageText + sys.newLine);
-        }
-        else {
-            sys.write(diagnostic.messageText + sys.newLine);
+
+            output += diagnostic.file.filename + "(" + loc.line + "," + loc.character + "): ";
         }
+
+        var category = DiagnosticCategory[diagnostic.category].toLowerCase();
+        output += category + " TS" + diagnostic.code + ": " + diagnostic.messageText + sys.newLine;
+
+        sys.write(output);
     }
 
     function reportDiagnostics(diagnostics: Diagnostic[]) {
diff --git a/src/harness/harness.ts b/src/harness/harness.ts
@@ -563,7 +563,7 @@ module Harness {
             private compileOptions: ts.CompilerOptions;
             private settings: Harness.TestCaseParser.CompilerSetting[] = [];
 
-            private lastErrors: MinimalDiagnostic[];
+            private lastErrors: HarnessDiagnostic[];
 
             public reset() {
                 this.inputFiles = [];
@@ -750,7 +750,7 @@ module Harness {
                     emitResult = checker.emitFiles();
                 }
 
-                var errors: MinimalDiagnostic[] = [];
+                var errors: HarnessDiagnostic[] = [];
                 program.getDiagnostics().concat(checker.getDiagnostics()).concat(emitResult ? emitResult.errors : []).forEach(err => {
                     // TODO: new compiler formats errors after this point to add . and newlines so we'll just do it manually for now
                     errors.push(getMinimalDiagnostic(err));
@@ -768,35 +768,43 @@ module Harness {
             }
         }
 
-        export function getMinimalDiagnostic(err: ts.Diagnostic): MinimalDiagnostic {
+        export function getMinimalDiagnostic(err: ts.Diagnostic): HarnessDiagnostic {
             var errorLineInfo = err.file ? err.file.getLineAndCharacterFromPosition(err.start) : { line: 0, character: 0 };
-            return { filename: err.file && err.file.filename, start: err.start, end: err.start + err.length, line: errorLineInfo.line, character: errorLineInfo.character, message: err.messageText };
+            return {
+                filename: err.file && err.file.filename,
+                start: err.start,
+                end: err.start + err.length,
+                line: errorLineInfo.line,
+                character: errorLineInfo.character,
+                message: err.messageText,
+                category: ts.DiagnosticCategory[err.category].toLowerCase(),
+                code: err.code
+            };
         }
 
-        export function minimalDiagnosticsToString(diagnostics: MinimalDiagnostic[]) {
-            // This is copied from tsc.ts's reportError to replicate what tsc does
-            var errors = "";
+        export function minimalDiagnosticsToString(diagnostics: HarnessDiagnostic[]) {
+            // This is basically copied from tsc.ts's reportError to replicate what tsc does
+            var errorOutput = "";
             ts.forEach(diagnostics, diagnotic => {
                 if (diagnotic.filename) {
-                    errors += diagnotic.filename + "(" + diagnotic.line + "," + diagnotic.character + "): " + diagnotic.message + sys.newLine;
-                }
-                else {
-                    errors += diagnotic.message + sys.newLine;
+                    errorOutput += diagnotic.filename + "(" + diagnotic.line + "," + diagnotic.character + "): ";
                 }
+
+                errorOutput += diagnotic.category + " TS" + diagnotic.code + ": " + diagnotic.message + sys.newLine;
             });
 
-            return errors;
+            return errorOutput;
         }
 
         export function getErrorBaseline(inputFiles: { unitName: string; content: string }[],
-            diagnostics: MinimalDiagnostic[]
+            diagnostics: HarnessDiagnostic[]
             ) {
 
             var outputLines: string[] = [];
             // Count up all the errors we find so we don't miss any
             var totalErrorsReported = 0;
 
-            function outputErrorText(error: Harness.Compiler.MinimalDiagnostic) {
+            function outputErrorText(error: Harness.Compiler.HarnessDiagnostic) {
                 var errLines = RunnerBase.removeFullPaths(error.message)
                     .split('\n')
                     .map(s => s.length > 0 && s.charAt(s.length - 1) === '\r' ? s.substr(0, s.length - 1) : s)
@@ -916,13 +924,15 @@ module Harness {
             //harnessCompiler.compileString(code, unitName, callback);
         }
 
-        export interface MinimalDiagnostic {
+        export interface HarnessDiagnostic {
             filename: string;
             start: number;
             end: number;
             line: number;
             character: number;
             message: string;
+            category: string;
+            code: number;
         }
 
         export interface GeneratedFile {
@@ -950,13 +960,13 @@ module Harness {
         /** Contains the code and errors of a compilation and some helper methods to check its status. */
         export class CompilerResult {
             public files: GeneratedFile[] = [];
-            public errors: MinimalDiagnostic[] = [];
+            public errors: HarnessDiagnostic[] = [];
             public declFilesCode: GeneratedFile[] = [];
             public sourceMaps: GeneratedFile[] = [];
             public sourceMapRecord: string;
 
             /** @param fileResults an array of strings for the fileName and an ITextWriter with its code */
-            constructor(fileResults: GeneratedFile[], errors: MinimalDiagnostic[], sourceMapRecordLines: string[]) {
+            constructor(fileResults: GeneratedFile[], errors: HarnessDiagnostic[], sourceMapRecordLines: string[]) {
                 var lines: string[] = [];
 
                 fileResults.forEach(emittedFile => {
diff --git a/tests/baselines/reference/project/cantFindTheModule/amd/cantFindTheModule.errors.txt b/tests/baselines/reference/project/cantFindTheModule/amd/cantFindTheModule.errors.txt
@@ -1,6 +1,6 @@
-decl.ts(1,26): Cannot find external module './foo/bar.js'.
-decl.ts(2,26): Cannot find external module 'baz'.
-decl.ts(3,26): Cannot find external module './baz'.
+decl.ts(1,26): error TS2307: Cannot find external module './foo/bar.js'.
+decl.ts(2,26): error TS2307: Cannot find external module 'baz'.
+decl.ts(3,26): error TS2307: Cannot find external module './baz'.
 
 
 ==== decl.ts (3 errors) ====
diff --git a/tests/baselines/reference/project/cantFindTheModule/node/cantFindTheModule.errors.txt b/tests/baselines/reference/project/cantFindTheModule/node/cantFindTheModule.errors.txt
@@ -1,6 +1,6 @@
-decl.ts(1,26): Cannot find external module './foo/bar.js'.
-decl.ts(2,26): Cannot find external module 'baz'.
-decl.ts(3,26): Cannot find external module './baz'.
+decl.ts(1,26): error TS2307: Cannot find external module './foo/bar.js'.
+decl.ts(2,26): error TS2307: Cannot find external module 'baz'.
+decl.ts(3,26): error TS2307: Cannot find external module './baz'.
 
 
 ==== decl.ts (3 errors) ====
diff --git a/tests/baselines/reference/project/declareVariableCollision/amd/declareVariableCollision.errors.txt b/tests/baselines/reference/project/declareVariableCollision/amd/declareVariableCollision.errors.txt
@@ -1,4 +1,4 @@
-in2.d.ts(1,8): Duplicate identifier 'a'.
+in2.d.ts(1,8): error TS2300: Duplicate identifier 'a'.
 
 
 ==== decl.d.ts (0 errors) ====
diff --git a/tests/baselines/reference/project/declareVariableCollision/node/declareVariableCollision.errors.txt b/tests/baselines/reference/project/declareVariableCollision/node/declareVariableCollision.errors.txt
@@ -1,4 +1,4 @@
-in2.d.ts(1,8): Duplicate identifier 'a'.
+in2.d.ts(1,8): error TS2300: Duplicate identifier 'a'.
 
 
 ==== decl.d.ts (0 errors) ====
diff --git a/tests/baselines/reference/project/intReferencingExtAndInt/amd/intReferencingExtAndInt.errors.txt b/tests/baselines/reference/project/intReferencingExtAndInt/amd/intReferencingExtAndInt.errors.txt
@@ -1,4 +1,4 @@
-internal2.ts(2,2): Import declarations in an internal module cannot reference an external module.
+internal2.ts(2,2): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== internal2.ts (1 errors) ====
diff --git a/tests/baselines/reference/project/intReferencingExtAndInt/node/intReferencingExtAndInt.errors.txt b/tests/baselines/reference/project/intReferencingExtAndInt/node/intReferencingExtAndInt.errors.txt
@@ -1,4 +1,4 @@
-internal2.ts(2,2): Import declarations in an internal module cannot reference an external module.
+internal2.ts(2,2): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== internal2.ts (1 errors) ====
diff --git a/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/amd/mapRootSourceRootWithNoSourceMapOption.errors.txt b/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/amd/mapRootSourceRootWithNoSourceMapOption.errors.txt
@@ -1,5 +1,5 @@
-Option mapRoot cannot be specified without specifying sourcemap option.
-Option sourceRoot cannot be specified without specifying sourcemap option.
+error TS5038: Option mapRoot cannot be specified without specifying sourcemap option.
+error TS5039: Option sourceRoot cannot be specified without specifying sourcemap option.
 
 
 !!! Option mapRoot cannot be specified without specifying sourcemap option.
diff --git a/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/node/mapRootSourceRootWithNoSourceMapOption.errors.txt b/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/node/mapRootSourceRootWithNoSourceMapOption.errors.txt
@@ -1,5 +1,5 @@
-Option mapRoot cannot be specified without specifying sourcemap option.
-Option sourceRoot cannot be specified without specifying sourcemap option.
+error TS5038: Option mapRoot cannot be specified without specifying sourcemap option.
+error TS5039: Option sourceRoot cannot be specified without specifying sourcemap option.
 
 
 !!! Option mapRoot cannot be specified without specifying sourcemap option.
diff --git a/tests/baselines/reference/project/mapRootWithNoSourceMapOption/amd/mapRootWithNoSourceMapOption.errors.txt b/tests/baselines/reference/project/mapRootWithNoSourceMapOption/amd/mapRootWithNoSourceMapOption.errors.txt
@@ -1,4 +1,4 @@
-Option mapRoot cannot be specified without specifying sourcemap option.
+error TS5038: Option mapRoot cannot be specified without specifying sourcemap option.
 
 
 !!! Option mapRoot cannot be specified without specifying sourcemap option.
diff --git a/tests/baselines/reference/project/mapRootWithNoSourceMapOption/node/mapRootWithNoSourceMapOption.errors.txt b/tests/baselines/reference/project/mapRootWithNoSourceMapOption/node/mapRootWithNoSourceMapOption.errors.txt
@@ -1,4 +1,4 @@
-Option mapRoot cannot be specified without specifying sourcemap option.
+error TS5038: Option mapRoot cannot be specified without specifying sourcemap option.
 
 
 !!! Option mapRoot cannot be specified without specifying sourcemap option.
diff --git a/tests/baselines/reference/project/nestedLocalModuleSimpleCase/amd/nestedLocalModuleSimpleCase.errors.txt b/tests/baselines/reference/project/nestedLocalModuleSimpleCase/amd/nestedLocalModuleSimpleCase.errors.txt
@@ -1,4 +1,4 @@
-test1.ts(2,2): Import declarations in an internal module cannot reference an external module.
+test1.ts(2,2): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test1.ts (1 errors) ====
diff --git a/tests/baselines/reference/project/nestedLocalModuleSimpleCase/node/nestedLocalModuleSimpleCase.errors.txt b/tests/baselines/reference/project/nestedLocalModuleSimpleCase/node/nestedLocalModuleSimpleCase.errors.txt
@@ -1,4 +1,4 @@
-test1.ts(2,2): Import declarations in an internal module cannot reference an external module.
+test1.ts(2,2): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test1.ts (1 errors) ====
diff --git a/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/amd/nestedLocalModuleWithRecursiveTypecheck.errors.txt b/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/amd/nestedLocalModuleWithRecursiveTypecheck.errors.txt
@@ -1,4 +1,4 @@
-test1.ts(3,2): Import declarations in an internal module cannot reference an external module.
+test1.ts(3,2): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test1.ts (1 errors) ====
diff --git a/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/node/nestedLocalModuleWithRecursiveTypecheck.errors.txt b/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/node/nestedLocalModuleWithRecursiveTypecheck.errors.txt
@@ -1,4 +1,4 @@
-test1.ts(3,2): Import declarations in an internal module cannot reference an external module.
+test1.ts(3,2): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test1.ts (1 errors) ====
diff --git a/tests/baselines/reference/project/noDefaultLib/amd/noDefaultLib.errors.txt b/tests/baselines/reference/project/noDefaultLib/amd/noDefaultLib.errors.txt
@@ -1,12 +1,12 @@
-Cannot find global type 'Array'.
-Cannot find global type 'Boolean'.
-Cannot find global type 'Function'.
-Cannot find global type 'IArguments'.
-Cannot find global type 'Number'.
-Cannot find global type 'Object'.
-Cannot find global type 'RegExp'.
-Cannot find global type 'String'.
-test.ts(3,8): Cannot find name 'Array'.
+error TS2318: Cannot find global type 'Array'.
+error TS2318: Cannot find global type 'Boolean'.
+error TS2318: Cannot find global type 'Function'.
+error TS2318: Cannot find global type 'IArguments'.
+error TS2318: Cannot find global type 'Number'.
+error TS2318: Cannot find global type 'Object'.
+error TS2318: Cannot find global type 'RegExp'.
+error TS2318: Cannot find global type 'String'.
+test.ts(3,8): error TS2304: Cannot find name 'Array'.
 
 
 !!! Cannot find global type 'Array'.
diff --git a/tests/baselines/reference/project/noDefaultLib/node/noDefaultLib.errors.txt b/tests/baselines/reference/project/noDefaultLib/node/noDefaultLib.errors.txt
@@ -1,12 +1,12 @@
-Cannot find global type 'Array'.
-Cannot find global type 'Boolean'.
-Cannot find global type 'Function'.
-Cannot find global type 'IArguments'.
-Cannot find global type 'Number'.
-Cannot find global type 'Object'.
-Cannot find global type 'RegExp'.
-Cannot find global type 'String'.
-test.ts(3,8): Cannot find name 'Array'.
+error TS2318: Cannot find global type 'Array'.
+error TS2318: Cannot find global type 'Boolean'.
+error TS2318: Cannot find global type 'Function'.
+error TS2318: Cannot find global type 'IArguments'.
+error TS2318: Cannot find global type 'Number'.
+error TS2318: Cannot find global type 'Object'.
+error TS2318: Cannot find global type 'RegExp'.
+error TS2318: Cannot find global type 'String'.
+test.ts(3,8): error TS2304: Cannot find name 'Array'.
 
 
 !!! Cannot find global type 'Array'.
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/amd/privacyCheckOnImportedModuleDeclarationsInsideModule.errors.txt b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/amd/privacyCheckOnImportedModuleDeclarationsInsideModule.errors.txt
@@ -1,5 +1,5 @@
-testGlo.ts(2,5): Import declarations in an internal module cannot reference an external module.
-testGlo.ts(21,5): Import declarations in an internal module cannot reference an external module.
+testGlo.ts(2,5): error TS1147: Import declarations in an internal module cannot reference an external module.
+testGlo.ts(21,5): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== testGlo.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/node/privacyCheckOnImportedModuleDeclarationsInsideModule.errors.txt b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/node/privacyCheckOnImportedModuleDeclarationsInsideModule.errors.txt
@@ -1,5 +1,5 @@
-testGlo.ts(2,5): Import declarations in an internal module cannot reference an external module.
-testGlo.ts(21,5): Import declarations in an internal module cannot reference an external module.
+testGlo.ts(2,5): error TS1147: Import declarations in an internal module cannot reference an external module.
+testGlo.ts(21,5): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== testGlo.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/amd/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.errors.txt b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/amd/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.errors.txt
@@ -1,5 +1,5 @@
-test.ts(5,5): Import declarations in an internal module cannot reference an external module.
-test.ts(24,5): Import declarations in an internal module cannot reference an external module.
+test.ts(5,5): error TS1147: Import declarations in an internal module cannot reference an external module.
+test.ts(24,5): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/node/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.errors.txt b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/node/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.errors.txt
@@ -1,5 +1,5 @@
-test.ts(5,5): Import declarations in an internal module cannot reference an external module.
-test.ts(24,5): Import declarations in an internal module cannot reference an external module.
+test.ts(5,5): error TS1147: Import declarations in an internal module cannot reference an external module.
+test.ts(24,5): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/amd/privacyCheckOnImportedModuleImportStatementInParentModule.errors.txt b/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/amd/privacyCheckOnImportedModuleImportStatementInParentModule.errors.txt
@@ -1,5 +1,5 @@
-test.ts(2,5): Import declarations in an internal module cannot reference an external module.
-test.ts(42,5): Import declarations in an internal module cannot reference an external module.
+test.ts(2,5): error TS1147: Import declarations in an internal module cannot reference an external module.
+test.ts(42,5): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/node/privacyCheckOnImportedModuleImportStatementInParentModule.errors.txt b/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/node/privacyCheckOnImportedModuleImportStatementInParentModule.errors.txt
@@ -1,5 +1,5 @@
-test.ts(2,5): Import declarations in an internal module cannot reference an external module.
-test.ts(42,5): Import declarations in an internal module cannot reference an external module.
+test.ts(2,5): error TS1147: Import declarations in an internal module cannot reference an external module.
+test.ts(42,5): error TS1147: Import declarations in an internal module cannot reference an external module.
 
 
 ==== test.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/quotesInFileAndDirectoryNames.dts.errors.txt b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/quotesInFileAndDirectoryNames.dts.errors.txt
@@ -1,4 +1,4 @@
-m'ain.d.ts(1,1): File 'li.ts' not found.
+m'ain.d.ts(1,1): error TS6053: File 'li.ts' not found.
 
 
 ==== li'b/class'A.d.ts (0 errors) ====
diff --git a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/quotesInFileAndDirectoryNames.dts.errors.txt b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/quotesInFileAndDirectoryNames.dts.errors.txt
@@ -1,4 +1,4 @@
-m'ain.d.ts(1,1): File 'li.ts' not found.
+m'ain.d.ts(1,1): error TS6053: File 'li.ts' not found.
 
 
 ==== li'b/class'A.d.ts (0 errors) ====
diff --git a/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/amd/sourceRootWithNoSourceMapOption.errors.txt b/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/amd/sourceRootWithNoSourceMapOption.errors.txt
@@ -1,4 +1,4 @@
-Option sourceRoot cannot be specified without specifying sourcemap option.
+error TS5039: Option sourceRoot cannot be specified without specifying sourcemap option.
 
 
 !!! Option sourceRoot cannot be specified without specifying sourcemap option.
diff --git a/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/node/sourceRootWithNoSourceMapOption.errors.txt b/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/node/sourceRootWithNoSourceMapOption.errors.txt
@@ -1,4 +1,4 @@
-Option sourceRoot cannot be specified without specifying sourcemap option.
+error TS5039: Option sourceRoot cannot be specified without specifying sourcemap option.
 
 
 !!! Option sourceRoot cannot be specified without specifying sourcemap option.
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/amd/visibilityOfTypeUsedAcrossModules2.errors.txt b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/amd/visibilityOfTypeUsedAcrossModules2.errors.txt
@@ -1,5 +1,5 @@
-main.ts(2,1): File 'nonExistingFile1.ts' not found.
-main.ts(3,1): File 'nonExistingFile2.ts' not found.
+main.ts(2,1): error TS6053: File 'nonExistingFile1.ts' not found.
+main.ts(3,1): error TS6053: File 'nonExistingFile2.ts' not found.
 
 
 ==== main.ts (2 errors) ====
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/node/visibilityOfTypeUsedAcrossModules2.errors.txt b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/node/visibilityOfTypeUsedAcrossModules2.errors.txt
@@ -1,5 +1,5 @@
-main.ts(2,1): File 'nonExistingFile1.ts' not found.
-main.ts(3,1): File 'nonExistingFile2.ts' not found.
+main.ts(2,1): error TS6053: File 'nonExistingFile1.ts' not found.
+main.ts(3,1): error TS6053: File 'nonExistingFile2.ts' not found.
 
 
 ==== main.ts (2 errors) ====

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-in2.d.ts(1,8): Duplicate identifier 'a'.`
	`1`	`+in2.d.ts(1,8): error TS2300: Duplicate identifier 'a'.`
`2`	`2`
`3`	`3`
`4`	`4`	`==== decl.d.ts (0 errors) ====`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-internal2.ts(2,2): Import declarations in an internal module cannot reference an external module.`
	`1`	`+internal2.ts(2,2): error TS1147: Import declarations in an internal module cannot reference an external module.`
`2`	`2`
`3`	`3`
`4`	`4`	`==== internal2.ts (1 errors) ====`