Bun bundler (#4)

* chore: remove rollup

* chore: mark package as module

* chore: add bun as dependency

* feat: add build options

* feat: add build script

* chore: lock deps

* chore: fix import path

Author: askhat

build.ts

@@ -0,0 +1,26 @@
+import bunfig from "./bunfig.toml";
+import pkg from "./package.json";
+import { join } from "path";
+import { mkdir, rename, cp, rm } from "fs/promises";
+
+await rm(bunfig.build.outdir, { recursive: true, force: true });
+await mkdir(bunfig.build.outdir, { recursive: true });
+
+await Promise.all([esm(), cjs(), types()]);
+
+function cjs() {
+  return Bun.build({ ...bunfig.build, format: "cjs" });
+}
+
+async function esm() {
+  await Bun.build({ ...bunfig.build, format: "esm" });
+  const jsPath = join(bunfig.build.outdir, "index.js");
+  const mjsPath = join(process.cwd(), pkg.module);
+  return rename(jsPath, mjsPath);
+}
+
+function types() {
+  const srcTypesPath = join(process.cwd(), "src/types.ts");
+  const outTypesPath = join(process.cwd(), pkg.types);
+  return cp(srcTypesPath, outTypesPath);
+}