v2: ESM only (#66)

* Drop Node 18, elevating requirements.

* Drop CJS exports.

* Switching to tsdown.

* Upgrading trivial dev dependencies.

* Updating types/bun.

* Updating typescript.

* Strict: upgrading tsconfig base and improving constraints on iterating over tuples.

* Readme: upd node.js versions.

* tsdown config: rm defaults.

* tsdown config: minor, shortening.

* Ref: shortening type for mapTuple.

* v2.0.0-beta.1

* v2.0.0-beta.2

Author: RobinTail

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## Version 2
+
+### v2.0.0
+
+- Supported Node.js versions: `^20.19.0 || ^22.12.0 || ^24.0.0`;
+- ESM only build: all the Node.js versions listed above support `require(ESM)`;
+
 ## Version 1
 
 ### v1.3.2

README.md

@@ -45,7 +45,7 @@ import fancyFn from "unlisted-module"; // Error: Importing unlisted-module is no
 
 ## Requirements
 
-- Node.js `^18.18.0 || ^20.9.0 || ^22.0.0 || ^24.0.0`
+- Node.js `^20.19.0 || ^22.12.0 || ^24.0.0`
 - `eslint@^9.0.0`
 - `typescript-eslint@^8.0.0`
 

bun.lock

@@ -1,21 +1,15 @@
 {
   "name": "eslint-plugin-allowed-dependencies",
   "description": "ESLint plugin Allowed Dependencies",
-  "version": "1.3.2",
+  "version": "2.0.0-beta.2",
   "type": "module",
   "module": "dist/index.js",
-  "main": "dist/index.cjs",
+  "main": "dist/index.js",
   "types": "dist/index.d.cts",
   "exports": {
     ".": {
-      "import": {
-        "types": "./dist/index.d.ts",
-        "default": "./dist/index.js"
-      },
-      "require": {
-        "types": "./dist/index.d.cts",
-        "default": "./dist/index.cjs"
-      }
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
     }
   },
   "license": "MIT",
@@ -35,7 +29,7 @@
     "*.md"
   ],
   "scripts": {
-    "build": "bun run tsup && attw --pack",
+    "build": "bun run tsdown",
     "lint": "bun run biome check",
     "pretest": "tsc --noEmit",
     "test": "bun test src",
@@ -47,26 +41,24 @@
     "ramda": "^0.32.0"
   },
   "devDependencies": {
-    "@arethetypeswrong/cli": "^0.18.0",
+    "@arethetypeswrong/cli": "^0.18.2",
     "@biomejs/biome": "2.2.5",
-    "@tsconfig/bun": "^1.0.7",
-    "@types/bun": "latest",
-    "@types/ramda": "^0.31.0",
-    "@types/semver": "^7.5.8",
-    "@typescript-eslint/rule-tester": "^8.9.0",
-    "eslint": "^9.12.0",
+    "@tsconfig/bun": "^1.0.9",
+    "@types/bun": "^1.3.0",
+    "@types/ramda": "^0.31.1",
+    "@typescript-eslint/rule-tester": "^8.46.0",
+    "eslint": "^9.37.0",
     "json-schema-to-ts": "^3.1.1",
-    "semver": "^7.6.3",
-    "tsup": "^8.3.0",
-    "typescript": "^5.6.3",
-    "typescript-eslint": "^8.9.0"
+    "tsdown": "^0.15.6",
+    "typescript": "^5.9.3",
+    "typescript-eslint": "^8.46.0"
   },
   "peerDependencies": {
     "eslint": "^9.0.0",
     "typescript-eslint": "^8.0.0"
   },
   "engines": {
-    "node": "^18.18.0 || ^20.9.0 || ^22.0.0 || ^24.0.0"
+    "node": "^20.19.0 || ^22.12.0 || ^24.0.0"
   },
   "keywords": [
     "modules",

package.json

@@ -31,3 +31,8 @@ export const splitPeers = (manifest: Manifest) => {
   );
   return { requiredPeers, optionalPeers };
 };
+
+export const mapTuple = <V extends R.Tuple<unknown, number>, U>(
+  fn: (n: V extends R.Tuple<infer T, number> ? T : never) => U,
+  dict: V,
+) => R.map(fn, dict) as R.Tuple<U, V["length"]>;

src/helpers.ts

@@ -1,6 +1,6 @@
 import { ESLintUtils } from "@typescript-eslint/utils";
 import * as R from "ramda";
-import { getManifest, getName, splitPeers } from "./helpers.ts";
+import { getManifest, getName, mapTuple, splitPeers } from "./helpers.ts";
 import { type Category, type Options, options, type Value } from "./schema.ts";
 
 const messages = {
@@ -15,7 +15,7 @@ const defaults: Options = {
   optionalPeers: "typeOnly",
 };
 
-const values: Value[] = [true, false, "typeOnly"];
+const values = [true, false, "typeOnly"] as const satisfies Value[];
 
 const makeIterator =
   (ctx: { cwd: string }) =>
@@ -42,12 +42,19 @@ const makeIterator =
         ),
       );
 
-    const [allowed, prohibited, limited] = R.map(take, values);
+    const [allowed, prohibited, limited] = mapTuple(take, values);
     limited.push(...typeOnly);
 
     return { allowed, prohibited, limited, ignore };
   };
 
+const groups = [
+  "allowed",
+  "prohibited",
+  "limited",
+  "ignore",
+] as const satisfies Array<keyof ReturnType<ReturnType<typeof makeIterator>>>;
+
 const makeTester = (ignored: string[]) => {
   const patterns = R.map(R.constructN(1, RegExp), ignored);
   const invoker = R.invoker(1, "test");
@@ -65,9 +72,9 @@ export const rule = ESLintUtils.RuleCreator.withoutDocs({
     const iterator = makeIterator(ctx);
     const combined = R.map(iterator, ctx.options.length ? ctx.options : [{}]);
 
-    const [allowed, prohibited, limited, ignored] = R.map(
+    const [allowed, prohibited, limited, ignored] = mapTuple(
       (group) => R.flatten(R.pluck(group, combined)),
-      ["allowed", "prohibited", "limited", "ignore"] as const,
+      groups,
     );
 
     const isIgnored = makeTester(ignored);

src/rule.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from "tsdown";
+
+export default defineConfig({
+  entry: "./src/index.ts",
+  minify: true,
+  skipNodeModulesBundle: true,
+  attw: { level: "error", profile: "esmOnly" },
+});