write _helpers.d.ts separately

Author: petekanev

dts-generator/src/main/java/com/telerik/Main.java

@@ -93,6 +93,7 @@ private static void validateOutputDir(InputParameters inputParameters, String ne
 //					.format("We didn't find the folder you specified ( %s ), so it's going to be created!",
 //							inputParameters.getOutputDir().getAbsolutePath()));
         }
+
 		inputParameters.setOutputDir(outputDir);
 	}
 }

dts-generator/src/main/java/com/telerik/dts/FileWriter.java

@@ -55,4 +55,21 @@ public void write(String content, String fileName) {
             }
         }
     }
+
+    public void writeHelperTypings(String content) {
+        try {
+                String outFile = this.outDir.getAbsolutePath() + File.separator + "_helpers.d.ts";
+                this.ps = new PrintStream(new FileOutputStream(outFile, true));
+
+                this.ps.print(content);
+                this.ps.println();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+        finally {
+            if(this.ps != null) {
+                this.ps.close();
+            }
+        }
+    }
 }

dts-generator/src/main/java/com/telerik/dts/Generator.java

@@ -6,6 +6,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -29,14 +30,30 @@ public void start(InputParameters inputParameters) throws IOException {
     }
 
     private void generateDts() {
-        while(ClassRepo.hasNext()) {
+        writeHelperTypings();
+
+        while (ClassRepo.hasNext()) {
             List<JavaClass> classFiles = ClassRepo.getNextClassGroup();
             String generatedContent = this.dtsApi.generateDtsContent(classFiles);
 
             this.fw.write(generatedContent, classFiles.get(0).getFileName()/*fileName*/);
         }
     }
 
+    private void writeHelperTypings() {
+
+        List<String> helperTypings = new ArrayList<>();
+        helperTypings.add("declare module native {\n" +
+                "\texport class Array<T> {\n" +
+                "\t\tpublic constructor();\n" +
+                "\t}\n" +
+                "}\n");
+
+        for (String helper : helperTypings) {
+            this.fw.writeHelperTypings(helper);
+        }
+    }
+
     private void loadJavaClasses(List<File> jars) throws IOException {
         for (File file : jars) {
             if (file.exists()) {