Merge pull request #34 from luhmann/add-tsconfig-support

Use "compilerOptions" from projects "tsconfig.json" for jest

packages/react-scripts/config/jest/typescriptTransform.js

@@ -1,21 +1,33 @@
 // Copyright 2004-present Facebook. All Rights Reserved.
 
+const fs = require('fs');
 const tsc = require('typescript');
+const tsconfigPath = require('app-root-path').resolve('/tsconfig.json');
+
+let compilerConfig = {
+  module: tsc.ModuleKind.CommonJS,
+  jsx: tsc.JsxEmit.React,
+}
+
+if (fs.existsSync(tsconfigPath)) {
+  try {
+    const tsconfig = require(tsconfigPath);
+
+    if (tsconfig && tsconfig.compilerOptions) {
+      compilerConfig = tsconfig.compilerOptions;
+    }
+  } catch (e) { /* Do nothing - default is set */ }
+}
 
 module.exports = {
   process(src, path) {
     if (path.endsWith('.ts') || path.endsWith('.tsx')) {
       return tsc.transpile(
         src,
-        {
-          module: tsc.ModuleKind.CommonJS,
-          jsx: tsc.JsxEmit.React,
-        },
-        path,
-        []
+        compilerConfig,
+        path, []
       );
     }
     return src;
   },
 };
-

packages/react-scripts/package.json

@@ -24,6 +24,7 @@
     "react-scripts-ts": "./bin/react-scripts-ts.js"
   },
   "dependencies": {
+    "app-root-path": "^2.0.1",
     "autoprefixer": "6.7.2",
     "case-sensitive-paths-webpack-plugin": "1.1.4",
     "chalk": "1.1.3",