Fixing bugs in link and unlink

Summary:
Android uses the name of the package, not the config, for the `isInstalled` check. Sending both parameters to `isInstalled` so we have a consistent API.

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A bug was uncovered in the react-native link command where Android would not unlink because the wrong parameters were being sent to `isInstalled`.

Successfully linked and unlinked `react-native-fs` on Windows and Mac. Jest tests pass.

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  CATEGORY
[----------]        TYPE
[ CLI      ]   [-------------]      LOCATION
[ DOCS     ]   [ BREAKING    ]   [-------------]
[ GENERAL  ]   [ BUGFIX      ]   [-{Component}-]
[ INTERNAL ]   [ ENHANCEMENT ]   [ {File}      ]
[ IOS      ]   [ FEATURE     ]   [ {Directory} ]   |-----------|
[ ANDROID  ]   [ MINOR       ]   [ {Framework} ] - | {Message} |
[----------]   [-------------]   [-------------]   |-----------|

[CATEGORY] [TYPE] [LOCATION] - MESSAGE

 EXAMPLES:

 [IOS] [BREAKING] [FlatList] - Change a thing that breaks other things
 [ANDROID] [BUGFIX] [TextInput] - Did a thing to TextInput
 [CLI] [FEATURE] [local-cli/info/info.js] - CLI easier to do things with
 [DOCS] [BUGFIX] [GettingStarted.md] - Accidentally a thing/word
 [GENERAL] [ENHANCEMENT] [Yoga] - Added new yoga thing/position
 [INTERNAL] [FEATURE] [./scripts] - Added thing to script that nobody will see
-->

[CLI][BUGFIX][local-cli/link/link.js] - Fix issue with `isInstalled` check for Android
[CLI][BUGFIX][local-cli/link/unlink.js] - Fix issue with `isInstalled` check for Android
[CLI][BUGFIX][local-cli/link/ios/common/unregisterNativeModule.js] - Fix references to unregister implementations.
Closes facebook/react-native#18207

Differential Revision: D7180885

Pulled By: hramos

fbshipit-source-id: 5f479cd9d7b1ebd8626b461e9dc1f22988e2c61f

link/ios/common/isInstalled.js

@@ -1,6 +1,6 @@
 const isInstalledIOS = require('../isInstalled');
 const isInstalledPods = require('../../pods/isInstalled');
 
-module.exports = function isInstalled(config, name) {
-  return isInstalledIOS(config, name) || isInstalledPods(config, name);
+module.exports = function isInstalled(projectConfig, name, dependencyConfig) {
+  return isInstalledIOS(projectConfig, dependencyConfig) || isInstalledPods(projectConfig, dependencyConfig);
 };

link/ios/common/unregisterNativeModule.js

@@ -1,8 +1,8 @@
 const compact = require('lodash').compact;
 const isInstalledIOS = require('../isInstalled');
 const isInstalledPods = require('../../pods/isInstalled');
-const unregisterDependencyIOS = require('../registerNativeModule');
-const unregisterDependencyPods = require('../../pods/registerNativeModule');
+const unregisterDependencyIOS = require('../unregisterNativeModule');
+const unregisterDependencyPods = require('../../pods/unregisterNativeModule');
 
 module.exports = function unregisterNativeModule(
   name,

link/link.js

@@ -49,7 +49,7 @@ const linkDependency = (platforms, project, dependency) => {
         return null;
       }
 
-      const isInstalled = linkConfig.isInstalled(project[platform], dependency.config[platform]);
+      const isInstalled = linkConfig.isInstalled(project[platform], dependency.name, dependency.config[platform]);
 
       if (isInstalled) {
         log.info(chalk.grey(`Platform '${platform}' module ${dependency.name} is already linked`));

link/unlink.js

@@ -32,7 +32,7 @@ const unlinkDependency = (platforms, project, dependency, packageName, otherDepe
         return;
       }
 
-      const isInstalled = linkConfig.isInstalled(project[platform], dependency[platform]);
+      const isInstalled = linkConfig.isInstalled(project[platform], packageName, dependency[platform]);
 
       if (!isInstalled) {
         log.info(`Platform '${platform}' module ${packageName} is not installed`);