Drop ESM entrypoint from package (#8493)

build/rollup-config.js

@@ -12,15 +12,24 @@ const watch = process.argv.indexOf('-w') > -1 || process.argv.indexOf('--watch')
 const version = release ? pkg.version : `${pkg.version}+${gitRev.branch()}.${gitRev.short()}`;
 const banner = createBanner(version);
 
+const outro = `var oldL = window.L;
+exports.noConflict = function() {
+	window.L = oldL;
+	return this;
+}
+// Always export us to window global (see #2364)
+window.L = exports;`;
+
 /** @type {import('rollup').RollupOptions} */
 const config = {
-	input: 'src/LeafletWithGlobals.js',
+	input: 'src/Leaflet.js',
 	output: [
 		{
 			file: pkg.main,
 			format: 'umd',
 			name: 'leaflet',
 			banner: banner,
+			outro: outro,
 			sourcemap: true,
 			freeze: false,
 			esModule: false
@@ -34,7 +43,7 @@ const config = {
 if (!watch) {
 	config.output.push(
 		{
-			file: pkg.module,
+			file: 'dist/leaflet-src.esm.js',
 			format: 'es',
 			banner: banner,
 			sourcemap: true,

package.json

@@ -33,7 +33,6 @@
     "uglify-js": "^3.17.0"
   },
   "main": "dist/leaflet-src.js",
-  "module": "dist/leaflet-src.esm.js",
   "style": "dist/leaflet.css",
   "files": [
     "dist",
@@ -70,8 +69,7 @@
     ],
     "root": true,
     "globals": {
-      "L": true,
-      "globalThis": true
+      "L": true
     },
     "env": {
       "commonjs": true,

spec/karma.conf.js

@@ -1,13 +1,22 @@
 var json = require('@rollup/plugin-json');
 
+const outro = `var oldL = window.L;
+exports.noConflict = function() {
+	window.L = oldL;
+	return this;
+}
+
+// Always export us to window global (see #2364)
+window.L = exports;`;
+
 // Karma configuration
 module.exports = function (config) {
 
 	// 	var libSources = require(__dirname + '/../build/build.js').getFiles();
 
 	var files = [
 		"spec/before.js",
-		"src/LeafletWithGlobals.js",
+		"src/Leaflet.js",
 		"spec/after.js",
 		"node_modules/happen/happen.js",
 		"node_modules/prosthetic-hand/dist/prosthetic-hand.js",
@@ -19,7 +28,7 @@ module.exports = function (config) {
 
 	var preprocessors = {};
 
-	preprocessors['src/LeafletWithGlobals.js'] = ['rollup'];
+	preprocessors['src/Leaflet.js'] = ['rollup'];
 
 	config.set({
 		// base path, that will be used to resolve files and exclude
@@ -55,6 +64,7 @@ module.exports = function (config) {
 			output: {
 				format: 'umd',
 				name: 'leaflet',
+				outro: outro,
 				freeze: false,
 			},
 		},