extraSystemPath option

.project

@@ -17,6 +17,7 @@
 		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.jdt.groovy.core.groovyNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
 	</natures>

README.md

@@ -55,6 +55,8 @@ jsweet {
 	candiesJsOut = new File('target/candies')
 	targetVersion = 'ES3'
 	includes = ['**/fr/test/my/**/*.java']
+	
+	// extraSystemPath = '/my/path/to/npm'
 }
 
 ```

build.gradle

@@ -8,7 +8,7 @@ apply plugin: 'maven-publish-auth'
 apply plugin: "com.gradle.plugin-publish"
 
 group = 'org.jsweet'
-version = '2.0.0-rc1'
+version = '2.0.0-SNAPSHOT'
 description = 'JSweet Gradle plugin'
 
 sourceCompatibility = 1.8
@@ -45,7 +45,7 @@ dependencies {
 	compile gradleApi()
 	compile localGroovy()
 
-	compile group: 'org.jsweet', name: 'jsweet-transpiler', version:'2.0.0-rc1'
+	compile group: 'org.jsweet', name: 'jsweet-transpiler', version:'2.0.0-SNAPSHOT'
 	compile group: 'org.jsweet', name: 'jsweet-core', version:'5-20170726'
 	compile group: 'org.codehaus.plexus', name: 'plexus-utils', version:'3.0.20'
 }

src/main/java/org/jsweet/gradle/JSweetPluginExtension.java

@@ -211,6 +211,14 @@ public void setHeader(File header) {
 		this.header = header;
 	}
 
+	public String getExtraSystemPath() {
+		return extraSystemPath;
+	}
+
+	public void setExtraSystemPath(String extraSystemPath) {
+		this.extraSystemPath = extraSystemPath;
+	}
+
 	private EcmaScriptComplianceLevel targetVersion = EcmaScriptComplianceLevel.ES3;
 	private ModuleKind module = ModuleKind.none;
 	private File outDir;
@@ -239,6 +247,8 @@ public void setHeader(File header) {
 	private boolean disableSinglePrecisionFloats = false;
 	private String factoryClassName;
 
+	private String extraSystemPath;
+
 	protected boolean ignoreTypeScriptErrors;
 	protected File header;
 }

src/main/java/org/jsweet/gradle/JSweetTranspileTask.java

@@ -15,6 +15,8 @@
  */
 package org.jsweet.gradle;
 
+import static org.apache.commons.lang3.StringUtils.isNotBlank;
+
 import java.io.File;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -35,6 +37,7 @@
 import org.jsweet.transpiler.SourceFile;
 import org.jsweet.transpiler.util.ConsoleTranspilationHandler;
 import org.jsweet.transpiler.util.ErrorCountTranspilationHandler;
+import org.jsweet.transpiler.util.ProcessUtil;
 
 /**
  * JSweet transpilation task
@@ -81,6 +84,11 @@ protected void transpile() {
 				new ConsoleTranspilationHandler());
 		try {
 
+			logInfo("extraSystemPath: " + configuration.getExtraSystemPath());
+			if (isNotBlank(configuration.getExtraSystemPath())) {
+				ProcessUtil.addExtraPath(configuration.getExtraSystemPath());
+			}
+
 			logInfo("encoding: " + configuration.getEncoding());
 			logInfo("classpath: " + classpath.getFiles());
 			logInfo("ts output dir: " + tsOutputDir);