Asset pipeline issue demo

build.gradle

@@ -6,7 +6,8 @@ buildscript {
     dependencies {
         classpath "org.grails:grails-gradle-plugin:$grailsVersion"
         classpath "org.grails.plugins:hibernate5:${gormVersion-".RELEASE"}"
-        classpath "com.bertramlabs.plugins:asset-pipeline-gradle:2.15.1"
+        classpath "com.bertramlabs.plugins:asset-pipeline-gradle:3.0.11"
+        classpath 'com.bertramlabs.plugins:sass-asset-pipeline:3.0.11'
     }
 }
 
@@ -51,7 +52,8 @@ dependencies {
     runtime "org.glassfish.web:el-impl:2.1.2-b03"
     runtime "com.h2database:h2"
     runtime "org.apache.tomcat:tomcat-jdbc"
-    runtime "com.bertramlabs.plugins:asset-pipeline-grails:2.15.1"
+    runtime "com.bertramlabs.plugins:asset-pipeline-grails:3.0.11"
+    assets 'com.bertramlabs.plugins:sass-asset-pipeline:3.0.11'
     testCompile "org.grails:grails-gorm-testing-support"
     testCompile "org.grails.plugins:geb"
     testCompile "org.grails:grails-web-testing-support"

grails-app/assets/javascripts/application.es6

@@ -0,0 +1,12 @@
+// This is a manifest file that'll be compiled into application.js.
+//
+// Any JavaScript file within this directory can be referenced here using a relative path.
+//
+// You're free to add application-wide JavaScript to this file, but it's generally better
+// to create separate JavaScript files as needed.
+//
+//= require jquery-3.3.1.min
+import './bootstrap'
+//= require popper.min
+//= require_self
+

grails-app/views/layouts/main.gsp

@@ -64,7 +64,7 @@
     <g:message code="spinner.alt" default="Loading&hellip;"/>
 </div>
 
-<asset:javascript src="application.js"/>
+<asset:javascript src="application.es6"/>
 
 </body>
 </html>

src/main/groovy/demo/asset/es6/Es6AssetFile.groovy

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package demo.asset.es6
+
+import asset.pipeline.AbstractAssetFile
+import asset.pipeline.processors.JsNodeInjectProcessor
+import asset.pipeline.processors.JsProcessor
+import asset.pipeline.processors.JsRequireProcessor
+import groovy.transform.CompileStatic
+
+import java.util.regex.Pattern
+
+/**
+ * An {@link asset.pipeline.AssetFile} implementation for ES6 Javascript
+ *
+ * @author Roman Chychyna
+ */
+@CompileStatic
+class Es6AssetFile extends AbstractAssetFile {
+    static final List<String> contentType = ['application/javascript', 'application/x-javascript', 'text/javascript']
+    static List<String> extensions = ['es6', 'es7', 'es8', 'es']
+    static String compiledExtension = 'js'
+    static processors = [JsProcessor, JsNodeInjectProcessor, FastBabelJsProcessor, JsRequireProcessor]
+    Pattern directivePattern = ~/(?m)^\/\/=(.*)/
+}

src/main/groovy/demo/asset/es6/FastBabelJsProcessedContainer.groovy

@@ -0,0 +1,13 @@
+package demo.asset.es6
+
+class FastBabelJsProcessedContainer {
+
+    String value
+
+    String input
+
+    FastBabelJsProcessedContainer(String value, String input) {
+        this.value = value
+        this.input = input
+    }
+}

src/main/groovy/demo/asset/es6/FastBabelJsProcessor.groovy

@@ -0,0 +1,24 @@
+package demo.asset.es6
+
+import asset.pipeline.AssetCompiler
+import asset.pipeline.AssetFile
+import asset.pipeline.processors.BabelJsProcessor
+import groovy.util.logging.Commons
+
+@Commons
+class FastBabelJsProcessor extends BabelJsProcessor {
+    FastBabelJsProcessor(AssetCompiler precompiler) {
+        super(precompiler)
+    }
+
+    @Override
+    String process(String input, AssetFile assetFile) {
+        def start = System.currentTimeMillis()
+        def cache = FastBabelJsProcessorCache.getInstance()
+        if (!cache.has(assetFile.path) || cache.isChanged(assetFile.path, input)) {
+            cache.set(assetFile.path, input, super.process(input, assetFile))
+        }
+        log.debug("Duration: " + (System.currentTimeMillis() - start) + "\tFile: " + assetFile.name + "")
+        return cache.get(assetFile.path)
+    }
+}

src/main/groovy/demo/asset/es6/FastBabelJsProcessorCache.groovy

@@ -0,0 +1,40 @@
+package demo.asset.es6
+
+class FastBabelJsProcessorCache {
+
+    private Map<String, FastBabelJsProcessedContainer> cache
+
+    static FastBabelJsProcessorCache instance
+
+    static FastBabelJsProcessorCache getInstance() {
+        if (!instance) {
+            instance = new FastBabelJsProcessorCache()
+        }
+
+        return instance
+    }
+
+    boolean has(String key) {
+        return getCache().containsKey(key)
+    }
+
+    boolean isChanged(String key, String input) {
+        getCache().get(key)?.input != input
+    }
+
+    void set(String key, String input, String value) {
+        getCache().put(key, new FastBabelJsProcessedContainer(value, input))
+    }
+
+    String get(String key) {
+        getCache().get(key).value
+    }
+
+    private Map<String, FastBabelJsProcessedContainer> getCache() {
+        if (!cache) {
+            cache = new HashMap<String, FastBabelJsProcessedContainer>()
+        }
+
+        cache
+    }
+}

src/main/resources/META-INF/asset-pipeline/asset.specs

@@ -0,0 +1 @@
+demo.asset.es6.Es6AssetFile