chore(build): move exports.d.ts to index.d.ts in build step

build.ts

@@ -1,3 +1,17 @@
+import { write } from "bun";
+import { copyFile } from "fs/promises";
+import { unlink } from "fs/promises";
+import path from "path";
+
+// changes the extension of a path to `newExt`
+function withExtension(filePath: string, newExt: string): string {
+	const dir = path.dirname(filePath);
+	const base = path.basename(filePath, path.extname(filePath));
+
+	const newFilePath = path.join(dir, `${base}.${newExt}`);
+	return newFilePath;
+}
+
 // extracts the Luau exports section from a given file path
 async function extractLuauExports(file: string): Promise<string | null> {
 	const input = await Bun.file(file).text();
@@ -15,10 +29,20 @@ async function extractLuauExports(file: string): Promise<string | null> {
 	return null;
 }
 
+const OUT_DIR = "./out";
 const EXPORTS_TS_FILE = "./src/exports.ts";
-const EXPORTS_LUAU_FILE = "./out/init.luau";
+const EXPORTS_LUAU_FILE = path.join(OUT_DIR, "init.luau");
 
-console.log("extract and export Luau type thunk");
-await extractLuauExports(EXPORTS_TS_FILE).then((exports) => Bun.write(EXPORTS_LUAU_FILE, exports!));
+await extractLuauExports(EXPORTS_TS_FILE)
+	.then(async (exports) => {
+		console.log("extract and export luau type thunk");
+		await write(EXPORTS_LUAU_FILE, exports!);
+	})
+	.finally(async () => {
+		console.log("export ts definition files");
+
+		const luauExportsFile = path.join(OUT_DIR, path.basename(withExtension(EXPORTS_TS_FILE, "d.ts")));
+		await write(path.join(OUT_DIR, "index.d.ts"), Bun.file(luauExportsFile));
+	});
 
 export {}; // treat as esmodule

package.json

@@ -25,6 +25,7 @@
 	"types": "out/index.d.ts",
 	"files": [
 		"out",
+		"!out/exports.d.ts",
 		"!**/*.tsbuildinfo"
 	],
 	"publishConfig": {

tsconfig.json

@@ -25,5 +25,6 @@
 		"declaration": true
 	},
 
-	"include": ["src/**/*.ts"]
+	// exclude build script
+	"exclude": ["build.ts"]
 }