Transpiling Java to JavaScript with JSweet

README.md

@@ -20,8 +20,6 @@ build process.
 
 - `./gradlew build` builds a WAR file that can be deployed on Java servlet
   containers, the `variED.sh` script runs the WAR file in Apache Tomcat
-- `./gradlew client:build` and `./gradlew server:build` build only the client or
-  server
 - `yarn start` inside the `client` directory runs the client on
   `http://localhost:3000`
 - `./gradlew server:run` runs the server on `http://localhost:8080`

app.json

@@ -1,6 +1,14 @@
 {
-  "name": "variED",
-  "description": "The variability editor",
-  "repository": "https://github.com/ekuiter/variED",
-  "keywords": ["variability", "feature modeling", "collaboration"]
-}
+    "name": "variED",
+    "description": "The variability editor",
+    "repository": "https://github.com/ekuiter/variED",
+    "keywords": ["variability", "feature modeling", "collaboration"],
+    "buildpacks": [
+        {
+            "url": "heroku/nodejs"
+        },
+        {
+            "url": "heroku/gradle"
+        }
+    ]
+}

build.gradle

@@ -1,5 +1,9 @@
 task build {
-    dependsOn ':clean', ':client:build', ':server:build'
+    dependsOn ':clean'
+    dependsOn ':client:clean'
+    dependsOn ':server:clean'
+    dependsOn ':client:build'
+    dependsOn ':server:build'
     doLast() {
         copy {
             from 'server/build/libs'
@@ -8,14 +12,15 @@ task build {
     }
 }
 
+tasks.getByPath(':client:clean').mustRunAfter ':clean'
+tasks.getByPath(':server:clean').mustRunAfter ':client:clean'
+tasks.getByPath(':client:build').mustRunAfter ':server:clean'
+tasks.getByPath(':server:build').mustRunAfter ':client:build'
+
 task stage(dependsOn: 'build')
 
 task clean {
     doLast {
         delete 'build'
     }
-}
-
-tasks.getByPath(':client:build').mustRunAfter ':clean'
-tasks.getByPath(':server:build').mustRunAfter ':clean'
-tasks.getByPath(':server:build').mustRunAfter ':client:build'
+}

client/.gitignore

@@ -9,4 +9,5 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 .env*.local
-/coverage
+/coverage
+/src/common/*

client/build.gradle

@@ -8,10 +8,11 @@ node {
 }
 
 yarn.mustRunAfter 'clean'
-yarn_build.mustRunAfter 'yarn'
+tasks.getByPath(':server:transpileCommon').mustRunAfter ':client:yarn'
+yarn_build.mustRunAfter ':server:transpileCommon'
 
 task build {
-    dependsOn 'clean', 'yarn', 'yarn_build'
+    dependsOn 'clean', ':server:transpileCommon', 'yarn', 'yarn_build'
     doLast {
         copy {
             from 'build'

client/src/index.tsx

@@ -16,6 +16,7 @@ import reducer from './store/reducer';
 import {initializeIcons} from 'office-ui-fabric-react/lib/Icons';
 import actions from './store/actions';
 import {LogLevel, setLogLevel} from './helpers/logger';
+import {Test} from './common/Test';
 
 if (window.location.protocol !== 'http:')
     window.location.protocol = 'http:'; // TODO: hack until we support WSS
@@ -34,4 +35,6 @@ ReactDOM.render((
     </Provider>
 ), document.getElementById('root'));
 
-store.dispatch<any>(actions.server.join({artifactPath: {project: 'FeatureModeling', artifact: 'CTV'}}));
+store.dispatch<any>(actions.server.join({artifactPath: {project: 'FeatureModeling', artifact: 'CTV'}}));
+
+Test.doSomething();

package.json

@@ -0,0 +1,6 @@
+{
+  "description": "This file forces Heroku to install Node.js for use in the build process.",
+  "engines": {
+    "node": "8.11.4"
+  }
+}

server/.gitignore

@@ -11,4 +11,5 @@
 *.iml
 /.git_private
 /src/main/webapp/*
-!/src/main/webapp/WEB-INF
+!/src/main/webapp/WEB-INF
+/.jsweet

server/build.gradle

@@ -1,15 +1,28 @@
+buildscript {
+    repositories {
+        maven { url "http://repository.jsweet.org/artifactory/libs-snapshot-local" }
+        maven { url "http://repository.jsweet.org/artifactory/plugins-snapshot-local" }
+    }
+    dependencies {
+        classpath('org.jsweet:jsweet-gradle-plugin:2.2.0-SNAPSHOT') { transitive = true }
+    }
+}
+
 plugins {
     id 'war'
     id 'idea'
     id 'org.gretty' version '2.2.0'
 }
 
+apply plugin: 'org.jsweet.jsweet-gradle-plugin'
+
 configurations {
     copyOnly
 }
 
 repositories {
     jcenter()
+    maven { url "http://repository.jsweet.org/artifactory/libs-snapshot-local" }
 }
 
 dependencies {
@@ -18,6 +31,7 @@ dependencies {
     copyOnly 'org.apache.tomcat.embed:tomcat-embed-websocket:9.0.8'
     compile 'com.google.code.gson:gson:2.8.5'
     compile 'me.atrox.haikunator:Haikunator:1.3'
+    compile 'org.jsweet:jsweet-core:6-SNAPSHOT'
     compile fileTree(dir: 'lib', include: '*.jar')
 }
 
@@ -32,6 +46,16 @@ idea {
     }
 }
 
+jsweet {
+    includes = ['de/ovgu/spldev/varied/common/**/*.java']
+    outDir = file('../client/src/common')
+    tsOut = file('.jsweet/ts')
+    workingDir = file('.jsweet')
+    declaration = true
+    noRootDirectories = true
+    module = 'es2015'
+}
+
 task copyWebappRunner {
     doLast {
         copy {
@@ -50,4 +74,15 @@ task copyWebappRunner {
 
 build.mustRunAfter ':client:build'
 build.dependsOn 'war', 'copyWebappRunner'
-task run(dependsOn: 'appRun')
+task run(dependsOn: 'appRun')
+
+// As of now, this has to be run MANUALLY if any common classes changed.
+task transpileCommon(dependsOn: 'jsweet')
+
+task cleanCommon {
+    doLast {
+        delete fileTree(dir: '../client/src/common')
+    }
+}
+
+clean.dependsOn 'cleanCommon'

server/src/main/java/de/ovgu/spldev/varied/common/Test.java

@@ -0,0 +1,7 @@
+package de.ovgu.spldev.varied.common;
+
+public class Test {
+    public static void doSomething() {
+        System.out.println("Test!");
+    }
+}

server/src/main/java/de/ovgu/spldev/varied/common/package-info.java

@@ -0,0 +1,2 @@
+@jsweet.lang.Root
+package de.ovgu.spldev.varied.common;