Another generating require relative path fix.

Author: Martynas Žilinskas

example/dist/hello.js

@@ -1,2 +1,2 @@
 /* Generated by main-file-generator */
-module.exports.default = require('build.js').Default;
+module.exports.default = require('./build.js').Default;

example/dist/world.js

@@ -1,2 +1,2 @@
 /* Generated by main-file-generator */
-module.exports.default = require('build.js').World;
+module.exports.default = require('./build.js').World;

src/generator.ts

@@ -43,11 +43,8 @@ export default class Generator {
 
             // Get `require` relative path.
             let requireFileFullPath = path.join(process.cwd(), this.config.proxyjs.requireFile);
-            let requireFileRelativePath = path.relative(path.dirname(fullFilePath), requireFileFullPath);
-            if(path.sep !== "/") {
-                  requireFileRelativePath = requireFileRelativePath.split(path.sep).join('/');
-            }
-            
+            let requireFileRelativePath = this.getRelativePath(fullFilePath, requireFileFullPath);
+
             console.log(fullFilePath);
             //Write to file
             let stream = fs.createWriteStream(fullFilePath, { 'flags': 'w' });
@@ -73,4 +70,17 @@ export default class Generator {
         let parts = string.split('/');
         return (parts.length > 0) ? parts[parts.length - 1] : '';
     }
+
+    private getRelativePath(fromDir: string, toFilePath: string) {
+        let filePath = path.relative(path.dirname(fromDir), toFilePath);
+        if (path.sep !== "/") {
+            filePath = filePath.split(path.sep).join('/');
+        }
+        
+        if (filePath.indexOf('/') === -1) {
+            filePath = './' + filePath;
+        }
+
+        return filePath;
+    }
 }