From da6fb98d21e9e642510494de8d256c7a7c84e932 Mon Sep 17 00:00:00 2001
From: Thomas Ip <hkmp7tommy@gmail.com>
Date: Fri, 8 Feb 2019 18:51:32 +0800
Subject: [PATCH] typescript: Set appropriate compiler options.

* Make type-checking stricter.
* Use more modern features.
---
 static/ts/tsconfig.json | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/static/ts/tsconfig.json b/static/ts/tsconfig.json
index 5e096a81ba..79e465ddf6 100644
--- a/static/ts/tsconfig.json
+++ b/static/ts/tsconfig.json
@@ -1,16 +1,23 @@
 {
-  "compilerOptions": {
-    "sourceMap": true,
-    "emitDecoratorMetadata": true,
-    "experimentalDecorators": true,
-    "removeComments": false,
-    "noImplicitAny": false,
-    "noFallthroughCasesInSwitch": true,
-    "suppressImplicitAnyIndexErrors": true,
-    "newLine": "lf",
-    "module": "commonjs",
-    "target": "es5",
-    "jsx": "react",
-    "allowJs": false
-  }
+    "compilerOptions": {
+        /* Basic options */
+        "target": "es5",
+        "module": "es6",
+        "jsx": "preserve",
+        "sourceMap": true,
+        "removeComments": false,
+
+        /* Strict type-checking */
+        "strict": true,
+        "noImplicitAny": true,
+        "strictNullChecks": false,
+        "noImplicitThis": true,
+        "alwaysStrict": true,
+
+        /* Additional checks */
+        "noUnusedLocals": true,
+        "noUnusedParameters": true,
+        "noImplicitReturns": true,
+        "noFallthroughCasesInSwitch": true,
+    }
 }