build!: switch to esm

Author: nihalgonsalves

.devcontainer/Dockerfile

@@ -1,3 +1,5 @@
-FROM mcr.microsoft.com/devcontainers/javascript-node:20
+FROM mcr.microsoft.com/devcontainers/javascript-node:22
+
+ENV COREPACK_ENABLE_DOWNLOAD_PROMPT=0
 
 RUN corepack enable

.github/workflows/test.yml

@@ -11,28 +11,31 @@ jobs:
         with:
           node-version: 22
           cache: "yarn"
-      - name: Install deps, build, then clear deps
+      - name: Install deps and build
         run: |
           yarn install --immutable
           yarn build
           rm -rf node_modules
-      - name: Test on Node 22
+
+      - name: test built package on node@22
+        working-directory: ./package-test/
         run: |
+          # CI implies --immutable
+          yarn install --no-immutable
+
           node -v
-          node bin/test.js
-      # Not using a matrix here since it's simpler
-      # to just duplicate it and not spawn new instances
+          node test.cjs
+          node test.mjs
+
+        # Not using a matrix here since it's simpler
+        # to just duplicate it and not spawn new instances
+
       - uses: actions/setup-node@v4
         with:
           node-version: 20
-      - name: Test on Node 20
+      - name: test build package on node@20
+        working-directory: ./package-test/
         run: |
           node -v
-          node bin/test.js
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 18
-      - name: Test on Node 18
-        run: |
-          node -v
-          node bin/test.js
+          node test.cjs
+          node test.mjs

.vscode/settings.json

@@ -1,4 +1,5 @@
 {
+  "typescript.tsdk": "node_modules/typescript/lib",
   "editor.formatOnSave": true,
   "editor.defaultFormatter": "esbenp.prettier-vscode",
   "editor.codeActionsOnSave": {

README.md

@@ -19,18 +19,19 @@ yarn add pg-error-enum
 
 ### Usage
 
-TypeScript or ES6 Modules
-
 ```ts
 import { PostgresError } from "pg-error-enum";
 ```
 
-JavaScript
+<details>
+<summary>Legacy CommonJS</summary>
 
 ```js
-const PostgresError = require("pg-error-enum").PostgresError;
+const { PostgresError } = require("pg-error-enum");
 ```
 
+</details>
+
 Usage
 
 ```ts

bin/sync.mts renamed to bin/sync.ts

@@ -107,11 +107,7 @@ const getEnum = async () => {
 
 const writeEnum = (enumString: string) => {
   writeFileSync(
-    new URL(
-      "../src/PostgresError.ts",
-      // @ts-expect-error requires package.json type: module
-      import.meta.url,
-    ),
+    new URL("../src/PostgresError.ts", import.meta.url),
     enumString,
   );
 };

eslint.config.js

@@ -0,0 +1,18 @@
+import tseslint from "typescript-eslint";
+
+// eslint-disable-next-line import/extensions
+import sharedConfig from "@nihalgonsalves/esconfig/eslint.config.shared.js";
+
+export default tseslint.config(
+  { ignores: ["package-test", "dist"] },
+  ...sharedConfig,
+  {
+    rules: {
+      "@typescript-eslint/no-duplicate-enum-values": "off",
+      "@typescript-eslint/restrict-template-expressions": [
+        "error",
+        { allowNumber: true },
+      ],
+    },
+  },
+);

eslint.config.mjs

@@ -1,5 +1,5 @@
 {
   "$schema": "https://unpkg.com/knip@5/schema.json",
-  "entry": ["src/index.ts!", "bin/sync.mts"],
+  "entry": ["src/index.ts!", "bin/sync.ts"],
   "project": ["**/*.{js,cjs,mjs,jsx,ts,cts,mts,tsx}"],
 }

knip.jsonc

@@ -0,0 +1 @@
+.yarn

package-test/.gitignore

@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "pg-error-enum": "../"
+  }
+}