feat!: change the plugin into an ESM-only package

Author: ota-meshi

.env-cmdrc.js

@@ -0,0 +1,14 @@
+{
+	"version": {
+		"IN_VERSION_SCRIPT": "true"
+	},
+	"version-ci": {
+		"IN_VERSION_CI_SCRIPT": "true"
+	},
+	"debug": {
+		"DEBUG": "eslint-plugin-svelte*"
+	},
+	"update-fixtures": {
+		"UPDATE_FIXTURES": "true"
+	}
+}

.env-cmdrc.json

@@ -0,0 +1,14 @@
+{
+	"version": {
+		"IN_VERSION_SCRIPT": "true"
+	},
+	"version-ci": {
+		"IN_VERSION_CI_SCRIPT": "true"
+	},
+	"debug": {
+		"DEBUG": "eslint-plugin-svelte*"
+	},
+	"update-fixtures": {
+		"UPDATE_FIXTURES": "true"
+	}
+}

packages/eslint-plugin-svelte/.env-cmdrc.js

@@ -10,7 +10,7 @@
   "engines": {
     "node": "^18.20.4 || ^20.18.0 || >=22.10.0"
   },
-  "type": "commonjs",
+  "type": "module",
   "main": "lib/index.js",
   "files": [
     "lib"
@@ -40,7 +40,7 @@
     "test": "pnpm run mocha \"tests/src/**/*.ts\" --reporter dot --timeout 60000",
     "test:debug": "env-cmd -e debug pnpm run test",
     "test:update-fixtures": "env-cmd -e update-fixtures pnpm run test",
-    "ts": "node -r esbuild-register",
+    "ts": "node --import tsx/esm",
     "typecov": "type-coverage",
     "update": "pnpm run ts ./tools/update.ts",
     "version": "env-cmd -e version pnpm run update",
@@ -63,7 +63,7 @@
     "known-css-properties": "^0.35.0",
     "postcss": "^8.4.49",
     "postcss-load-config": "^3.1.4",
-    "postcss-safe-parser": "^7.0.0",
+    "postcss-safe-parser": "^6.0.0",
     "postcss-selector-parser": "^7.0.0",
     "semver": "^7.6.3",
     "svelte-eslint-parser": "^1.0.0-next.1"
@@ -86,7 +86,6 @@
     "acorn": "^8.14.0",
     "assert": "^2.1.0",
     "esbuild": "^0.24.0",
-    "esbuild-register": "^3.6.0",
     "eslint-scope": "^8.2.0",
     "eslint-typegen": "^0.3.2",
     "eslint-visitor-keys": "^4.2.0",
@@ -100,6 +99,7 @@
     "stylus": "^0.64.0",
     "svelte": "^5.2.9",
     "svelte-i18n": "^4.0.1",
+    "tsx": "^4.19.2",
     "type-coverage": "^2.29.7",
     "yaml": "^2.6.1"
   },

packages/eslint-plugin-svelte/.env-cmdrc.json

@@ -1,6 +1,6 @@
 import type { Linter } from 'eslint';
-import { rules } from '../../utils/rules';
-import base from './base';
+import { rules } from '../../utils/rules.js';
+import base from './base.js';
 const config: Linter.Config[] = [
 	...base,
 	{