Move interceptComponent.js out of features/base/util

I don't like the file/function name, I'm not excited about the
complexity of the logic it implements, and it's definitely a reusable
piece worthy of being called a utility.

react/features/app/functions.web.js

@@ -1,10 +1,17 @@
-/* global APP, loggingConfig */
+/* @flow */
+
+import Logger from 'jitsi-meet-logger';
 
 import { isRoomValid } from '../base/conference';
 import JitsiMeetJS from '../base/lib-jitsi-meet';
-import { RouteRegistry } from '../base/react';
-import { interceptComponent } from '../base/util';
+import { Platform, RouteRegistry } from '../base/react';
 import { Conference } from '../conference';
+import {
+    NoMobileApp,
+    PluginRequiredBrowser,
+    UnsupportedDesktopBrowser,
+    UnsupportedMobileBrowser
+} from '../unsupported-browser';
 import { WelcomePage } from '../welcome';
 
 import URLProcessor from '../../../modules/config/URLProcessor';
@@ -13,7 +20,65 @@ import KeyboardShortcut
 import getTokenData from '../../../modules/tokendata/TokenData';
 import JitsiMeetLogStorage from '../../../modules/util/JitsiMeetLogStorage';
 
-const Logger = require('jitsi-meet-logger');
+declare var APP: Object;
+declare var interfaceConfig: Object;
+declare var loggingConfig: Object;
+
+/**
+ * Array of rules defining whether we should {@link _interceptComponent} to
+ * render.
+ *
+ * @private
+ * @param {Object} state - Object containing current Redux state.
+ * @returns {ReactElement|void}
+ * @type {Function[]}
+ */
+const _INTERCEPT_COMPONENT_RULES = [
+
+    /**
+     * This rule describes case when user opens application using mobile
+     * browser. In order to promote the app, we choose to suggest the mobile
+     * app even if the browser supports the app (e.g. Google Chrome with
+     * WebRTC support on Android).
+     *
+     * @param {Object} state - Redux state of the app.
+     * @returns {UnsupportedMobileBrowser|void} If the rule is satisfied then
+     * we should intercept existing component by UnsupportedMobileBrowser.
+     */
+    () => {
+        const OS = Platform.OS;
+
+        if (OS === 'android' || OS === 'ios') {
+            const mobileAppPromo
+                = typeof interfaceConfig === 'object'
+                    && interfaceConfig.MOBILE_APP_PROMO;
+
+            return (
+                typeof mobileAppPromo === 'undefined' || Boolean(mobileAppPromo)
+                    ? UnsupportedMobileBrowser
+                    : NoMobileApp);
+        }
+    },
+    state => {
+        const { webRTCReady } = state['features/base/lib-jitsi-meet'];
+
+        switch (typeof webRTCReady) {
+        case 'boolean':
+            if (webRTCReady === false) {
+                return UnsupportedDesktopBrowser;
+            }
+            break;
+
+        case 'undefined':
+            // If webRTCReady is not set, then we cannot use it to take a
+            // decision.
+            break;
+
+        default:
+            return PluginRequiredBrowser;
+        }
+    }
+];
 
 export { _parseURIString } from './functions.native';
 
@@ -25,7 +90,7 @@ export { _parseURIString } from './functions.native';
  * method.
  * @returns {Route}
  */
-export function _getRouteToRender(stateOrGetState) {
+export function _getRouteToRender(stateOrGetState: Object | Function) {
     const state
         = typeof stateOrGetState === 'function'
             ? stateOrGetState()
@@ -38,7 +103,7 @@ export function _getRouteToRender(stateOrGetState) {
 
     // Intercepts route components if any of component interceptor rules
     // is satisfied.
-    route.component = interceptComponent(state, component);
+    route.component = _interceptComponent(state, component);
 
     return route;
 }
@@ -118,3 +183,32 @@ function _initLogging() {
         JitsiMeetJS.addGlobalLogTransport(APP.logCollector);
     }
 }
+
+/**
+ * Intercepts route components based on a {@link _INTERCEPT_COMPONENT_RULES}.
+ *
+ * @param {Object|Function} stateOrGetState - Either Redux state object or
+ * getState() function.
+ * @param {ReactElement} component - Current route component to render.
+ * @private
+ * @returns {ReactElement} If any of the pre-defined rules is satisfied, returns
+ * intercepted component.
+ */
+function _interceptComponent(
+        stateOrGetState: Object,
+        component: ReactElement<*>) {
+    let result;
+    const state
+        = typeof stateOrGetState === 'function'
+            ? stateOrGetState()
+            : stateOrGetState;
+
+    for (const rule of _INTERCEPT_COMPONENT_RULES) {
+        result = rule(state);
+        if (result) {
+            break;
+        }
+    }
+
+    return result || component;
+}

react/features/base/util/index.js

@@ -1,4 +1,3 @@
-export * from './interceptComponent';
 export * from './loadScript';
 export * from './randomUtil';
 export * from './roomnameGenerator';

react/features/base/util/interceptComponent.js

@@ -1,98 +0,0 @@
-/* @flow */
-
-import { Platform } from '../react';
-import {
-    NoMobileApp,
-    PluginRequiredBrowser,
-    UnsupportedDesktopBrowser,
-    UnsupportedMobileBrowser
-} from '../../unsupported-browser';
-
-declare var APP: Object;
-declare var interfaceConfig: Object;
-declare var JitsiMeetJS: Object;
-
-/**
- * Array of rules defining whether we should intercept component to render
- * or not.
- *
- * @private
- * @param {Object} state - Object containing current Redux state.
- * @returns {ReactElement|void}
- * @type {Function[]}
- */
-const _RULES = [
-
-    /**
-     * This rule describes case when user opens application using mobile
-     * browser. In order to promote the app, we choose to suggest the mobile
-     * app even if the browser supports the app (e.g. Google Chrome with
-     * WebRTC support on Android).
-     *
-     * @param {Object} state - Redux state of the app.
-     * @returns {UnsupportedMobileBrowser|void} If the rule is satisfied then
-     * we should intercept existing component by UnsupportedMobileBrowser.
-     */
-    () => {
-        const OS = Platform.OS;
-
-        if (OS === 'android' || OS === 'ios') {
-            const mobileAppPromo
-                = typeof interfaceConfig === 'object'
-                    && interfaceConfig.MOBILE_APP_PROMO;
-
-            return (
-                typeof mobileAppPromo === 'undefined' || Boolean(mobileAppPromo)
-                    ? UnsupportedMobileBrowser
-                    : NoMobileApp);
-        }
-    },
-    state => {
-        const { webRTCReady } = state['features/base/lib-jitsi-meet'];
-
-        switch (typeof webRTCReady) {
-        case 'boolean':
-            if (webRTCReady === false) {
-                return UnsupportedDesktopBrowser;
-            }
-            break;
-
-        case 'undefined':
-            // If webRTCReady is not set, then we cannot use it to take a
-            // decision.
-            break;
-
-        default:
-            return PluginRequiredBrowser;
-        }
-    }
-];
-
-/**
- * Utility method that responsible for intercepting of route components based on
- * the set of defined rules.
- *
- * @param {Object|Function} stateOrGetState - Either Redux state object or
- * getState() function.
- * @param {ReactElement} component - Current route component to render.
- * @returns {ReactElement} If any of rules is satisfied returns intercepted
- * component.
- */
-export function interceptComponent(
-        stateOrGetState: Object,
-        component: ReactElement<*>) {
-    let result;
-    const state
-        = typeof stateOrGetState === 'function'
-            ? stateOrGetState()
-            : stateOrGetState;
-
-    for (const rule of _RULES) {
-        result = rule(state);
-        if (result) {
-            break;
-        }
-    }
-
-    return result || component;
-}