feat: enable allowImportingTsExtensions and strict ts flags (#3207)

Author: productdevbook

src/core/build/types.ts

@@ -200,6 +200,7 @@ export async function writeTypes(nitro: Nitro) {
         moduleDetection: "force",
         isolatedModules: true,
         verbatimModuleSyntax: true,
+        allowImportingTsExtensions: true,
         /* Strictness */
         strict: nitro.options.typescript.strict,
         noUncheckedIndexedAccess: true,

src/core/config/defaults.ts

@@ -85,7 +85,7 @@ export const NitroDefaults: NitroConfig = {
 
   // Advanced
   typescript: {
-    strict: false,
+    strict: true,
     generateTsConfig: true,
     generateRuntimeConfigTypes: true,
     tsconfigPath: "types/tsconfig.json",