fix: revert "Fixed slow builds" (#16)

This reverts commit 0e2a38e.
azz · May 4, 2019 · c5e9fcc · c5e9fcc
1 parent 0e2a38e
commit c5e9fcc
Showing 1 changed file with 9 additions and 8 deletions.
diff --git a/src/runTsc.js b/src/runTsc.js
@@ -42,16 +42,17 @@ const runTsc = ({ testPath, config: jestConfig }) => {
     process.cwd()
   );
 
-  const options = {
-    compilerOptions: {
-      noEmit: true,
-      ...settings.options,
-    },
-  };
+  const options = Object.assign({}, { noEmit: true }, settings.options);
+
+  const program = ts.createProgram([testPath], options);
+
+  const emitResult = program.emit();
 
-  const transpileOutput = ts.transpileModule(testPath, options);
+  const allDiagnostics = ts
+    .getPreEmitDiagnostics(program)
+    .concat(emitResult.diagnostics);
 
-  const errors = transpileOutput.diagnostics
+  const errors = allDiagnostics
     .map(diagnostic => {
       if (diagnostic.file) {
         const {