chore(config): pin @types/bun, tighten TypeScript strictness, and refactor config logic

- Pin `@types/bun` to `^1.3.14` for reproducible builds instead of using `latest`
- Update `tsconfig.json` with stricter type-checking flags and reorganize compiler options
- Refactor `initConfig` to DRY up the model default logic and add a null guard before process exit

package.json

@@ -18,7 +18,7 @@
   },
   "devDependencies": {
     "@biomejs/biome": "2.4.12",
-    "@types/bun": "latest",
+    "@types/bun": "^1.3.14",
     "esbuild": "0.28.0"
   },
   "peerDependencies": {

pnpm-lock.yaml

@@ -55,7 +55,7 @@ importers:
         specifier: 2.4.12
         version: 2.4.12
       '@types/bun':
-        specifier: latest
+        specifier: ^1.3.14
         version: 1.3.14
       esbuild:
         specifier: 0.28.0

src/config/index.ts

@@ -23,17 +23,20 @@ export async function initConfig(old: AppConfig | null): Promise<AppConfig> {
   if (isCancel(baseURL)) process.exit(1);
 
   const models = await getModels(baseURL);
+  const initialValue = models.includes(old?.model ?? "")
+    ? old?.model
+    : models[0];
   const model = await autocomplete({
     message: "Choose a default model:",
-    initialValue: models.includes(old?.model ?? "") ? old?.model : models[0],
-    placeholder: models.includes(old?.model ?? "") ? old?.model : models[0],
+    initialValue,
+    placeholder: initialValue ?? "Start typing...",
     options: models.map((model) => ({ value: model })),
     validate: (value) =>
       models.includes(typeof value === "string" ? value : "")
         ? undefined
         : `Unable to find model "${value}"`,
   });
-  if (isCancel(model)) process.exit(1);
+  if (!model || isCancel(model)) process.exit(1);
 
   const config = { baseURL, model } satisfies AppConfig;
 

testRender.ts

@@ -1,4 +1,4 @@
-import { renderMarkdown } from "./src/render/markdown.ts";
+import { renderMarkdown } from "./src/render/markdown";
 
 const text = await Bun.file("README.md").text();
 

tsconfig.json

@@ -1,29 +1,39 @@
 {
+  // Visit https://aka.ms/tsconfig to read more about this file
   "compilerOptions": {
-    // Environment setup & latest features
-    "lib": ["ESNext"],
-    "target": "ESNext",
-    "module": "Preserve",
-    "moduleDetection": "force",
-    "jsx": "react-jsx",
-    "allowJs": true,
-
-    // Bundler mode
+    // Environment Settings
+    // See also https://aka.ms/tsconfig/module
+    "module": "esnext",
+    "target": "esnext",
     "moduleResolution": "bundler",
-    "allowImportingTsExtensions": true,
-    "verbatimModuleSyntax": true,
+    "esModuleInterop": true,
     "noEmit": true,
+    // For nodejs:
+    "lib": ["esnext"],
+    "types": ["bun"],
+    // and npm install -D @types/node
 
-    // Best practices
-    "strict": true,
-    "skipLibCheck": true,
-    "noFallthroughCasesInSwitch": true,
+    // Stricter Typechecking Options
     "noUncheckedIndexedAccess": true,
-    "noImplicitOverride": true,
+    "exactOptionalPropertyTypes": true,
 
-    // Some stricter flags (disabled by default)
-    "noUnusedLocals": false,
-    "noUnusedParameters": false,
-    "noPropertyAccessFromIndexSignature": false
+    // Style Options
+    "noImplicitReturns": true,
+    "noImplicitOverride": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "noPropertyAccessFromIndexSignature": true,
+
+    // Recommended Options
+    "strict": true,
+    "jsx": "react-jsx",
+    //"allowImportingTsExtensions": true,
+    "allowArbitraryExtensions": true,
+    "verbatimModuleSyntax": true,
+    "isolatedModules": true,
+    "noUncheckedSideEffectImports": true,
+    "moduleDetection": "force",
+    "skipLibCheck": true
   }
 }