diff --git a/karma.conf.js b/karma.conf.js
index 3fa59626f7..537e04f702 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -57,7 +57,7 @@ module.exports = function(config) {
     frameworks: ['mocha', 'chai', 'karma-typescript'],
 
     karmaTypescriptConfig: {
-      tsconfig: './tsconfig.json',
+      tsconfig: './tsconfig.base.json',
       compilerOptions: {
         checkJs: false,
         baseUrl: '.',
diff --git a/test/e2e/tsconfig.json b/test/e2e/tsconfig.json
index 4db669b079..7ab6d4a89a 100644
--- a/test/e2e/tsconfig.json
+++ b/test/e2e/tsconfig.json
@@ -11,5 +11,5 @@
       "path": "../shared/tsconfig.json"
     }
   ],
-  "extends": "../../tsconfig.json"
+  "extends": "../../tsconfig.base.json"
 }
diff --git a/test/perf/tsconfig.json b/test/perf/tsconfig.json
index 4db669b079..7ab6d4a89a 100644
--- a/test/perf/tsconfig.json
+++ b/test/perf/tsconfig.json
@@ -11,5 +11,5 @@
       "path": "../shared/tsconfig.json"
     }
   ],
-  "extends": "../../tsconfig.json"
+  "extends": "../../tsconfig.base.json"
 }
diff --git a/test/screenshots/tsconfig.json b/test/screenshots/tsconfig.json
index 4db669b079..7ab6d4a89a 100644
--- a/test/screenshots/tsconfig.json
+++ b/test/screenshots/tsconfig.json
@@ -11,5 +11,5 @@
       "path": "../shared/tsconfig.json"
     }
   ],
-  "extends": "../../tsconfig.json"
+  "extends": "../../tsconfig.base.json"
 }
diff --git a/test/shared/tsconfig.json b/test/shared/tsconfig.json
index 0db6bc9211..12f1aec4f6 100644
--- a/test/shared/tsconfig.json
+++ b/test/shared/tsconfig.json
@@ -7,5 +7,5 @@
     "checkJs": false,
     "allowJs": false
   },
-  "extends": "../../tsconfig.json",
+  "extends": "../../tsconfig.base.json",
 }
diff --git a/third_party/typescript/ts_library.py b/third_party/typescript/ts_library.py
index 3d47686dc1..8bebb30493 100644
--- a/third_party/typescript/ts_library.py
+++ b/third_party/typescript/ts_library.py
@@ -23,7 +23,7 @@ finally:
 NODE_LOCATION = devtools_paths.node_path()
 
 ROOT_DIRECTORY_OF_REPOSITORY = path.join(_CURRENT_DIR, '..', '..')
-ROOT_TS_CONFIG_LOCATION = path.join(ROOT_DIRECTORY_OF_REPOSITORY, 'tsconfig.json')
+BASE_TS_CONFIG_LOCATION = path.join(ROOT_DIRECTORY_OF_REPOSITORY, 'tsconfig.base.json')
 TYPES_NODE_MODULES_DIRECTORY = path.join(ROOT_DIRECTORY_OF_REPOSITORY, 'node_modules', '@types')
 RESOURCES_INSPECTOR_PATH = path.join(os.getcwd(), 'resources', 'inspector')
 
@@ -54,8 +54,7 @@ def main():
     parser.set_defaults(test_only=False)
 
     opts = parser.parse_args()
-
-    with open(ROOT_TS_CONFIG_LOCATION) as root_tsconfig:
+    with open(BASE_TS_CONFIG_LOCATION) as root_tsconfig:
         try:
             tsconfig = json.loads(root_tsconfig.read())
         except Exception as e:
diff --git a/third_party/typescript/typescript.gni b/third_party/typescript/typescript.gni
index 10c35fa29c..c085c90791 100644
--- a/third_party/typescript/typescript.gni
+++ b/third_party/typescript/typescript.gni
@@ -45,7 +45,7 @@ template("ts_library") {
                            ])
 
     inputs = [
-      "//$devtools_location/tsconfig.json",
+      "//$devtools_location/tsconfig.base.json",
       "//$devtools_location/node_modules/typescript/lib/tsc.js",
       "//$devtools_location/front_end/legacy/legacy-defs.d.ts",
       "//$devtools_location/front_end/generated/protocol.d.ts",
diff --git a/tsconfig.base.json b/tsconfig.base.json
new file mode 100644
index 0000000000..a88f49eaa9
--- /dev/null
+++ b/tsconfig.base.json
@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "target": "esnext",
+    "baseUrl": ".",
+    "paths": {
+      "/front_end/*": ["front_end/*"]
+    },
+    "checkJs": true,
+    "allowJs": true,
+
+    "noEmitOnError": true,
+
+    "lib": [
+      "esnext",
+      "dom"
+    ],
+
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true
+  }
+}
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index 44dd5520a6..3ef756b521 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,24 +1,10 @@
 {
-  "compilerOptions": {
-    "module": "esnext",
-    "target": "esnext",
-    "baseUrl": ".",
-    "paths": {
-      "/front_end/*": ["front_end/*"]
-    },
-    "checkJs": true,
-    "allowJs": true,
-
-    "noEmitOnError": true,
-
-    "lib": [
-      "esnext",
-      "dom"
-    ],
-
-    "strict": true,
-    "forceConsistentCasingInFileNames": true,
-    "noImplicitReturns": true,
-    "noFallthroughCasesInSwitch": true
-  }
+  "extends": "./tsconfig.base.json",
+  "include": [
+    "front_end/",
+    "test/"
+  ],
+  "exclude": [
+    "front_end/externs.js"
+  ]
 }