1 files changed, 65 insertions, 0 deletions
diff --git a/packages/instant/src/util/env.ts b/packages/instant/src/util/env.ts
new file mode 100644
index 000000000..4a32f9cb1
--- /dev/null
+++ b/packages/instant/src/util/env.ts
@@ -0,0 +1,65 @@
+import * as bowser from 'bowser';
+import { Provider } from 'ethereum-types';
+import * as _ from 'lodash';
+
+import { PROVIDER_TYPE_TO_NAME } from '../constants';
+import { Browser, OperatingSystem, ProviderType } from '../types';
+
+export const envUtil = {
+    getBrowser(): Browser {
+        if (bowser.chrome) {
+            return Browser.Chrome;
+        } else if (bowser.firefox) {
+            return Browser.Firefox;
+        } else if (bowser.opera) {
+            return Browser.Opera;
+        } else if (bowser.msedge) {
+            return Browser.Edge;
+        } else if (bowser.safari) {
+            return Browser.Safari;
+        } else {
+            return Browser.Other;
+        }
+    },
+    isMobileOperatingSystem(): boolean {
+        return bowser.mobile;
+    },
+    getOperatingSystem(): OperatingSystem {
+        if (bowser.android) {
+            return OperatingSystem.Android;
+        } else if (bowser.ios) {
+            return OperatingSystem.iOS;
+        } else if (bowser.mac) {
+            return OperatingSystem.Mac;
+        } else if (bowser.windows) {
+            return OperatingSystem.Windows;
+        } else if (bowser.windowsphone) {
+            return OperatingSystem.WindowsPhone;
+        } else if (bowser.linux) {
+            return OperatingSystem.Linux;
+        } else {
+            return OperatingSystem.Other;
+        }
+    },
+    getProviderType(provider: Provider): ProviderType | undefined {
+        if (provider.constructor.name === 'EthereumProvider') {
+            return ProviderType.Mist;
+        } else if ((provider as any).isParity) {
+            return ProviderType.Parity;
+        } else if ((provider as any).isMetaMask) {
+            return ProviderType.MetaMask;
+        } else if (!_.isUndefined(_.get(window, 'SOFA'))) {
+            return ProviderType.CoinbaseWallet;
+        } else if (!_.isUndefined(_.get(window, '__CIPHER__'))) {
+            return ProviderType.Cipher;
+        }
+        return;
+    },
+    getProviderName(provider: Provider): string {
+        const providerTypeIfExists = envUtil.getProviderType(provider);
+        if (_.isUndefined(providerTypeIfExists)) {
+            return provider.constructor.name;
+        }
+        return PROVIDER_TYPE_TO_NAME[providerTypeIfExists];
+    },
+};