diff --git a/spec/result.txt b/spec/result.txt
index 93abdb3..b615d2a 100644
--- a/spec/result.txt
+++ b/spec/result.txt
@@ -1,4 +1,4 @@
-src/tsconfig.ts:35:31: config
+src/tsconfig.ts:32:57: config
 src/core.ts:30:45: intrinsicName
 src/core.ts:39:159: intrinsicName
 src/index.ts:15:37: v
@@ -11,5 +11,5 @@ src/index.ts:23:106: debug
 src/index.ts:44:4: error
 src/index.ts:45:7: error
 src/index.ts:48:17: error
-3180 / 3193 99.59%
+3178 / 3191 99.59%
 type-coverage success.
diff --git a/src/tsconfig.ts b/src/tsconfig.ts
index 686b457..77f394a 100644
--- a/src/tsconfig.ts
+++ b/src/tsconfig.ts
@@ -29,10 +29,7 @@ type JsonConfig = {
 
 export function getTsConfig(configFilePath: string, dirname: string): JsonConfig {
   const configResult = ts.readConfigFile(configFilePath, p => fs.readFileSync(p).toString())
-  if (configResult.error) {
-    throw configResult.error
-  }
-  const config = configResult.config as JsonConfig
+  const config = configResult.error ? {} : configResult.config as JsonConfig
   if (config.extends) {
     const project = path.resolve(dirname, config.extends)
     const { configFilePath, dirname: extendsBasename } = getTsConfigFilePath(project)