Fix Cesium in Node.js 12+.

.eslintrc.json

@@ -9,7 +9,7 @@
     "overrides": [
         {
             "files": [
-                "index.js",
+                "index.cjs",
                 "server.cjs",
                 "gulpfile.js",
                 "Source/Workers/transferTypedArrayTest.js"

.gulp.json

@@ -0,0 +1,5 @@
+{
+    "flags": {
+        "gulpfile": "gulpfile.cjs"
+    }
+}

.travis.yml

@@ -26,7 +26,7 @@ script:
 
 # Various Node.js smoke-screen tests
   - node -e "const Cesium = require('./');"
-  - NODE_ENV=development node index.js
-  - NODE_ENV=production node index.js
+  - NODE_ENV=development node index.cjs
+  - NODE_ENV=production node index.cjs
 
   - npm --silent run cloc

CHANGES.md

@@ -6,9 +6,11 @@ Change Log
 ##### Additions :tada:
 
 * Added basic underground rendering support. When the camera is underground the globe will be rendered as a solid surface and underground entities will not be culled. [#8572](https://github.com/AnalyticalGraphicsInc/cesium/pull/8572)
+* The `CesiumUnminified` build now includes sourcemaps.
 
 ##### Fixes :wrench:
 
+* Cesium can now be used in Node.JS 12 and later, with or without `--experimental-modules`. It can still be used in earlier versions as well.
 * Interacting with the Cesium canvas will now blur the previously focused element. This prevents unintended modification of input elements when interacting with the globe.
 * `TileMapServiceImageryProvider` will now force `minimumLevel` to 0 if the `tilemapresource.xml` metadata request fails and the `rectangle` is too large for the given detail level [#8448](https://github.com/AnalyticalGraphicsInc/cesium/pull/8448)
 * Fixed ground atmosphere rendering when using a samller ellipsoid. [#8683](https://github.com/CesiumGS/cesium/issues/8683)

Tools/package.json

@@ -0,0 +1,3 @@
+{
+    "type": "commonjs"
+}

gulpfile.js → gulpfile.cjs

@@ -115,6 +115,8 @@ function rollupWarning(message) {
     console.log(message);
 }
 
+var copyrightHeader = fs.readFileSync(path.join('Source', 'copyrightHeader.js'), "utf8");
+
 function createWorkers() {
     rimraf.sync('Build/createWorkers');
 
@@ -150,6 +152,9 @@ function createWorkers() {
 
 gulp.task('build', function() {
     mkdirp.sync('Build');
+    fs.writeFileSync('Build/package.json', JSON.stringify({
+        type: 'commonjs'
+    }), "utf8");
     glslToJavaScript(minifyShaders, 'Build/minifyShaders.state');
     createCesiumJs();
     createSpecList();
@@ -341,7 +346,7 @@ gulp.task('makeZipFile', gulp.series('release', function() {
         'Specs/**',
         'ThirdParty/**',
         'favicon.ico',
-        'gulpfile.js',
+        'gulpfile.cjs',
         'server.cjs',
         'package.json',
         'LICENSE.md',
@@ -457,7 +462,7 @@ function deployCesium(bucketName, uploadDirectory, cacheControl, done) {
                 'ThirdParty/**',
                 '*.md',
                 'favicon.ico',
-                'gulpfile.js',
+                'gulpfile.cjs',
                 'index.html',
                 'package.json',
                 'server.cjs',
@@ -997,7 +1002,9 @@ function combineCesium(debug, optimizer, combineOutput) {
         return bundle.write({
             format: 'umd',
             name: 'Cesium',
-            file: path.join(combineOutput, 'Cesium.js')
+            file: path.join(combineOutput, 'Cesium.js'),
+            sourcemap: debug,
+            banner: copyrightHeader
         });
     });
 }
@@ -1047,7 +1054,9 @@ function combineWorkers(debug, optimizer, combineOutput) {
             }).then(function(bundle) {
                 return bundle.write({
                     dir: path.join(combineOutput, 'Workers'),
-                    format: 'amd'
+                    format: 'amd',
+                    sourcemap: debug,
+                    banner: copyrightHeader
                 });
             });
         });
@@ -1073,7 +1082,6 @@ function combineJavaScript(options) {
     var removePragmas = options.removePragmas;
 
     var combineOutput = path.join('Build', 'combineOutput', optimizer);
-    var copyrightHeader = fs.readFileSync(path.join('Source', 'copyrightHeader.js'));
 
     var promise = Promise.join(
         combineCesium(!removePragmas, optimizer, combineOutput),
@@ -1086,7 +1094,6 @@ function combineJavaScript(options) {
 
         //copy to build folder with copyright header added at the top
         var stream = gulp.src([combineOutput + '/**'])
-            .pipe(gulpInsert.prepend(copyrightHeader))
             .pipe(gulp.dest(outputDirectory));
 
         promises.push(streamToPromise(stream));
@@ -1391,7 +1398,6 @@ function buildCesiumViewer() {
     );
 
     promise = promise.then(function() {
-        var copyrightHeader = fs.readFileSync(path.join('Source', 'copyrightHeader.js'));
         var stream = mergeStream(
             gulp.src('Build/Apps/CesiumViewer/CesiumViewer.js')
                 .pipe(gulpInsert.prepend(copyrightHeader))

index.js → index.cjs

@@ -8,4 +8,5 @@ if (process.env.NODE_ENV === 'production') {
     module.exports = require(path.join(__dirname, 'Build/Cesium/Cesium'));
     return;
 }
-module.exports = require('esm')(module)('./Source/Cesium.js');
+
+module.exports = require(path.join(__dirname, 'Build/CesiumUnminified/Cesium'));

package.json

@@ -29,12 +29,13 @@
     "url": "https://github.com/CesiumGS/cesium/issues",
     "email": "cesium-dev@googlegroups.com"
   },
-  "main": "index.js",
-  "module": "Source/Cesium.js",
-  "type": "module",
-  "dependencies": {
-    "esm": "^3.2.25"
+  "main": "index.cjs",
+  "module": "./Source/Cesium.js",
+  "exports": {
+    "require": "./index.cjs",
+    "import": "./Source/Cesium.js"
   },
+  "type": "module",
   "devDependencies": {
     "aws-sdk": "^2.531.0",
     "bluebird": "^3.4.6",