Added Main Reloader

Signed-off-by: Valentin Popov <info@valentineus.link>

1 files changed, 44 insertions, 2 deletions

diff --git a/src/mainReloader.ts b/src/mainReloader.ts
index 5bd0fed..5a9a71b 100644
--- a/src/mainReloader.ts
+++ b/src/mainReloader.ts
@@ -1,3 +1,45 @@
-type TMainReloader = (paths: string[], ignored?: string[], handler?: (path: string) => void) => void;
+import chokidar from "chokidar";
+// tslint:disable-next-line: no-implicit-dependencies
+import { app } from "electron";
 
-export const mainReloader: TMainReloader = (paths, ignored, handler) => { };
+type TMainReloader = (
+  paths: string | string[],
+  ignored?: RegExp | RegExp[],
+  handler?: (error: Error | undefined, path: string | undefined) => void,
+  options?: chokidar.WatchOptions,
+) => void;
+
+const ignoredDefault: RegExp = /(node_modules|bower_components)/;
+
+export const mainReloader: TMainReloader = (
+  paths: string | string[],
+  ignored?: RegExp | RegExp[],
+  handler?: (error: Error | undefined, path: string | undefined) => void,
+  options?: chokidar.WatchOptions,
+): void => {
+  const ignoredPaths: RegExp[] = [ignoredDefault];
+
+  if (typeof ignored === "object") {
+    ignoredPaths.concat(ignored);
+  }
+
+  const watcher: chokidar.FSWatcher = chokidar.watch(paths, {
+    ignored: ignoredPaths,
+    ...options,
+  });
+
+  watcher.on("error", (error: Error) => {
+    if (typeof handler === "function") {
+      handler(error, undefined);
+    }
+  });
+
+  watcher.on("change", (path: string) => {
+    if (typeof handler === "function") {
+      handler(undefined, path);
+    }
+
+    app.relaunch();
+    app.exit();
+  });
+};