Convert utils/processConfig to TS

Reviewed By: danielbuechele

Differential Revision: D16710602

fbshipit-source-id: 3dbccdb0aedd3d5415487d690fb943aafdafa0f0

src/utils/processConfig.tsx

@@ -0,0 +1,51 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+
+import {remote} from 'electron';
+
+export type ProcessConfig = {
+  disabledPlugins: Set<string>;
+  pluginPaths: Array<string>;
+  lastWindowPosition: {
+    x: number;
+    y: number;
+    width: number;
+    height: number;
+  } | null;
+  screenCapturePath: string | null;
+  launcherMsg: string | null;
+  updaterEnabled: boolean;
+  // Controls whether to delegate to the launcher if present.
+  launcherEnabled: boolean;
+};
+
+let configObj = null;
+export default function config(): ProcessConfig {
+  if (configObj === null) {
+    const json = JSON.parse(
+      // $FlowFixMe: process.env not in type defs
+      (remote && remote.process.env.CONFIG) || process.env.CONFIG || '{}',
+    );
+    configObj = {
+      disabledPlugins: new Set(json.disabledPlugins || []),
+      pluginPaths: json.pluginPaths || [],
+      lastWindowPosition: json.lastWindowPosition,
+      launcherMsg: json.launcherMsg,
+      updaterEnabled:
+        typeof json.updaterEnabled === 'boolean' ? json.updaterEnabled : true,
+      screenCapturePath: json.screenCapturePath,
+      launcherEnabled:
+        typeof json.launcherEnabled === 'boolean' ? json.launcherEnabled : true,
+    };
+  }
+
+  return configObj;
+}
+
+export function resetConfigForTesting() {
+  configObj = null;
+}