update electron to v43

electron/node_modules/@electron/get/dist/Downloader.d.ts

@@ -0,0 +1,18 @@
+/**
+ * Generic interface for the artifact downloader library.
+ * The default implementation is {@link FetchDownloader},
+ * but any custom downloader can be passed to `@electron/get` via
+ * the {@link ElectronDownloadRequestOptions.downloader} option.
+ *
+ * @typeParam T - Options to pass to the downloader
+ * @category Downloader
+ */
+export interface Downloader<T> {
+    /**
+     * Download an artifact from an arbitrary URL to a file path on system
+     * @param url URL of the file to download
+     * @param targetFilePath Filesystem path to download the artifact to (including the file name)
+     * @param options Options to pass to the downloader
+     */
+    download(url: string, targetFilePath: string, options: T): Promise<void>;
+}