Add excludeExtensions (#14)

* Add excludedExtensions to config

Author: kristofferremback

package.json

@@ -64,6 +64,13 @@
                     "type": "boolean",
                     "default": false,
                     "description": "Removes the leading ./ character when the path is pointing to a parent folder."
+                },
+                "relativePath.excludedExtensions": {
+                    "type": "array",
+                    "default": [
+                        ".js"
+                    ],
+                    "description": "An array of extensions to exclude from the relative path url (Useful for used with Webpack or when importing files of mixed types)"
                 }
             }
         }

src/extension.ts

@@ -1,7 +1,7 @@
 // The module 'vscode' contains the VS Code extensibility API
 // Import the module and reference it with the alias vscode in your code below
-import {window, workspace, commands, Disposable, 
-    ExtensionContext, StatusBarAlignment, StatusBarItem, 
+import {window, workspace, commands, Disposable,
+    ExtensionContext, StatusBarAlignment, StatusBarItem,
     TextDocument, QuickPickItem, FileSystemWatcher, Uri,
     TextEditorEdit, TextEditor, Position} from 'vscode';
 import * as path from "path";
@@ -129,6 +129,18 @@ class RelativePath {
         }
     }
 
+    // Check if the current extension should be excluded
+    private excludeExtensionsFor(relativeUrl: string) {
+        const currentExtension = path.extname(relativeUrl)
+        if (currentExtension === '') {
+            return false;
+        }
+
+        return this._configuration.excludedExtensions.some((ext: string) => {
+            return (ext.startsWith('.') ? ext : `.${ext}`).toLowerCase() === currentExtension.toLowerCase();
+        })
+    }
+
     // Get the picked item
     private returnRelativeLink(item: QuickPickItem, editor: TextEditor): void {
         if (item) {
@@ -138,6 +150,8 @@ class RelativePath {
 
             if (this._configuration.removeExtension) {
                 relativeUrl = relativeUrl.substring(0, relativeUrl.lastIndexOf("."));
+            } else if (this.excludeExtensionsFor(relativeUrl)) {
+                relativeUrl = relativeUrl.substring(0, relativeUrl.lastIndexOf("."));
             }
             if (this._configuration.removeLeadingDot && relativeUrl.startsWith("./../")) {
                 relativeUrl = relativeUrl.substring(2, relativeUrl.length);