Set rootDir in tsconfig-base.json (microsoft#26415)

Andy · web-flow · commit cea483897289 · 2018-08-13T15:19:27.000-07:00
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
@@ -3188,16 +3188,7 @@ namespace ts {
     }
 
     export function getDeclarationEmitOutputFilePath(fileName: string, host: EmitHost) {
-        // TODO: GH#25810 following should work but makes the build break:
-        // return getDeclarationEmitOutputFilePathWorker(fileName, host.getCompilerOptions(), host.getCurrentDirectory(), host.getCommonSourceDirectory(), f => host.getCanonicalFileName(f));
-
-        const options = host.getCompilerOptions();
-        const outputDir = options.declarationDir || options.outDir; // Prefer declaration folder if specified
-
-        const path = outputDir
-            ? getSourceFilePathInNewDir(fileName, host, outputDir)
-            : fileName;
-        return removeFileExtension(path) + Extension.Dts;
+        return getDeclarationEmitOutputFilePathWorker(fileName, host.getCompilerOptions(), host.getCurrentDirectory(), host.getCommonSourceDirectory(), f => host.getCanonicalFileName(f));
     }
 
     export function getDeclarationEmitOutputFilePathWorker(fileName: string, options: CompilerOptions, currentDirectory: string, commonSourceDirectory: string, getCanonicalFileName: GetCanonicalFileName): string {
diff --git a/src/tsconfig-base.json b/src/tsconfig-base.json
@@ -3,6 +3,7 @@
         "pretty": true,
         "lib": ["es2015"],
         "target": "es5",
+        "rootDir": ".",
 
         "declaration": true,
         "declarationMap": true,
