diff --git a/src/esploader.ts b/src/esploader.ts
index 93af443..07cee70 100644
--- a/src/esploader.ts
+++ b/src/esploader.ts
@@ -1,5 +1,5 @@
 import { ESPError } from "./error";
-import { inflate, deflate } from "pako";
+import { deflate } from "pako";
 import { Transport } from "./webserial";
 import { ROM } from "./targets/rom";
 
diff --git a/tsconfig.json b/tsconfig.json
index 2573f9e..730b555 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,9 +6,13 @@
     "allowSyntheticDefaultImports": true,
     "outDir": "./lib",
     "moduleResolution": "node",
+    "noUnusedLocals": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitReturns": true,
+    "forceConsistentCasingInFileNames": true,
     "lib": ["ES2020", "DOM"],
     "importHelpers": true,
     "resolveJsonModule": true
   },
   "include": ["src/**/*"]
-}
\ No newline at end of file
+}