perf(autolinking): get platform's specific properties

packages/cli-config/src/__tests__/index-test.ts

@@ -66,7 +66,7 @@ test('should have a valid structure by default', () => {
       reactNativePath: "."
     }`,
   });
-  const config = loadConfig(DIR);
+  const config = loadConfig({projectRoot: DIR});
   expect(removeString(config, DIR)).toMatchSnapshot();
 });
 
@@ -83,7 +83,7 @@ test('should return dependencies from package.json', () => {
       }
     }`,
   });
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(removeString(dependencies, DIR)).toMatchSnapshot();
 });
 
@@ -122,7 +122,7 @@ test('should read a config of a dependency and use it to load other settings', (
       }
     }`,
   });
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(
     removeString(dependencies['react-native-test'], DIR),
   ).toMatchSnapshot();
@@ -173,7 +173,7 @@ test('command specified in root config should overwrite command in "react-native
       ],
     };`,
   });
-  const {commands} = loadConfig(DIR);
+  const {commands} = loadConfig({projectRoot: DIR});
   const commandsNames = commands.map(({name}) => name);
   const commandIndex = commandsNames.indexOf('foo-command');
 
@@ -206,7 +206,7 @@ test('should merge project configuration with default values', () => {
       }
     }`,
   });
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(removeString(dependencies['react-native-test'], DIR)).toMatchSnapshot(
     'snapshoting `react-native-test` config',
   );
@@ -241,7 +241,7 @@ test('should load commands from "react-native-foo" and "react-native-bar" packag
       }
     }`,
   });
-  const {commands} = loadConfig(DIR);
+  const {commands} = loadConfig({projectRoot: DIR});
   expect(commands).toMatchSnapshot();
 });
 
@@ -261,7 +261,7 @@ test('should not skip packages that have invalid configuration (to avoid breakin
       }
     }`,
   });
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(removeString(dependencies, DIR)).toMatchSnapshot(
     'dependencies config',
   );
@@ -281,7 +281,7 @@ test('does not use restricted "react-native" key to resolve config from package.
       }
     }`,
   });
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(dependencies).toHaveProperty('react-native-netinfo');
   expect(spy).not.toHaveBeenCalled();
 });
@@ -327,7 +327,7 @@ module.exports = {
     }`,
   });
 
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(removeString(dependencies['local-lib'], DIR)).toMatchInlineSnapshot(`
     Object {
       "name": "local-lib",
@@ -367,7 +367,7 @@ test('should apply build types from dependency config', () => {
       }
     }`,
   });
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(
     removeString(dependencies['react-native-test'], DIR),
   ).toMatchSnapshot();
@@ -400,7 +400,7 @@ test('supports dependencies from user configuration with custom build type', ()
     }`,
   });
 
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(
     removeString(dependencies['react-native-test'], DIR),
   ).toMatchSnapshot();
@@ -429,7 +429,7 @@ test('supports disabling dependency for ios platform', () => {
     }`,
   });
 
-  const {dependencies} = loadConfig(DIR);
+  const {dependencies} = loadConfig({projectRoot: DIR});
   expect(
     removeString(dependencies['react-native-test'], DIR),
   ).toMatchSnapshot();
@@ -494,7 +494,7 @@ test('should convert project sourceDir relative path to absolute', () => {
     `,
   });
 
-  const config = loadConfig(DIR);
+  const config = loadConfig({projectRoot: DIR});
 
   expect(config.project.ios?.sourceDir).toBe(path.join(DIR, iosProjectDir));
   expect(config.project.android?.sourceDir).toBe(

packages/cli-config/src/commands/config.ts

@@ -21,6 +21,12 @@ function filterConfig(config: Config) {
 export default {
   name: 'config',
   description: 'Print CLI configuration',
+  options: [
+    {
+      name: '--platform <platform>',
+      description: 'Output configuration for a specific platform',
+    },
+  ],
   func: async (_argv: string[], ctx: Config) => {
     console.log(JSON.stringify(filterConfig(ctx), null, 2));
   },

packages/cli-config/src/loadConfig.ts

@@ -28,7 +28,6 @@ function getDependencyConfig(
   finalConfig: Config,
   config: UserDependencyConfig,
   userConfig: UserConfig,
-  isPlatform: boolean,
 ): DependencyConfig {
   return merge(
     {
@@ -39,7 +38,7 @@ function getDependencyConfig(
           const platformConfig = finalConfig.platforms[platform];
           dependency[platform] =
             // Linking platforms is not supported
-            isPlatform || !platformConfig
+            Object.keys(config.platforms).length > 0 || !platformConfig
               ? null
               : platformConfig.dependencyConfig(
                   root,
@@ -86,7 +85,13 @@ const removeDuplicateCommands = <T extends boolean>(commands: Command<T>[]) => {
 /**
  * Loads CLI configuration
  */
-function loadConfig(projectRoot: string = findProjectRoot()): Config {
+function loadConfig({
+  projectRoot = findProjectRoot(),
+  selectedPlatform,
+}: {
+  projectRoot?: string;
+  selectedPlatform?: string;
+}): Config {
   let lazyProject: ProjectConfig;
   const userConfig = readConfigFromDisk(projectRoot);
 
@@ -140,8 +145,6 @@ function loadConfig(projectRoot: string = findProjectRoot()): Config {
         resolveNodeModuleDir(projectRoot, dependencyName);
       let config = readDependencyConfigFromDisk(root, dependencyName);
 
-      const isPlatform = Object.keys(config.platforms).length > 0;
-
       return assign({}, acc, {
         dependencies: assign({}, acc.dependencies, {
           get [dependencyName](): DependencyConfig {
@@ -151,7 +154,6 @@ function loadConfig(projectRoot: string = findProjectRoot()): Config {
               finalConfig,
               config,
               userConfig,
-              isPlatform,
             );
           },
         }),
@@ -161,7 +163,9 @@ function loadConfig(projectRoot: string = findProjectRoot()): Config {
         ]),
         platforms: {
           ...acc.platforms,
-          ...config.platforms,
+          ...(selectedPlatform && config.platforms[selectedPlatform]
+            ? {[selectedPlatform]: config.platforms[selectedPlatform]}
+            : config.platforms),
         },
         healthChecks: [...acc.healthChecks, ...config.healthChecks],
       }) as Config;

packages/cli-doctor/src/commands/__tests__/info.test.ts

@@ -14,7 +14,7 @@ beforeEach(() => {
   jest.resetAllMocks();
 });
 
-const config = loadConfig();
+const config = loadConfig({});
 
 test('prints output without arguments', async () => {
   await info.func([], config);

packages/cli-doctor/src/tools/healthchecks/index.ts

@@ -36,7 +36,7 @@ export const getHealthchecks = ({contributor}: Options): Healthchecks => {
 
   // Doctor can run in a detached mode, where there isn't a config so this can fail
   try {
-    config = loadConfig();
+    config = loadConfig({});
     additionalChecks = config.healthChecks;
 
     if (config.reactNativePath) {

packages/cli-platform-android/native_modules.gradle

@@ -432,7 +432,7 @@ class ReactNativeModules {
     String[] nodeCommand = ["node", "-e", cliResolveScript]
     def cliPath = this.getCommandOutput(nodeCommand, this.root)
 
-    String[] reactNativeConfigCommand = ["node", cliPath, "config"]
+    String[] reactNativeConfigCommand = ["node", cliPath, "config", "--platform", "android"]
     def reactNativeConfigOutput = this.getCommandOutput(reactNativeConfigCommand, this.root)
 
     def json

packages/cli-platform-ios/native_modules.rb

@@ -28,7 +28,7 @@ def use_native_modules!(config = nil)
   if (!config)
     json = []
 
-    IO.popen(["node", cli_bin, "config"]) do |data|
+    IO.popen(["node", cli_bin, "config", '--platform', 'ios']) do |data|
       while line = data.gets
         json << line
       end

packages/cli/src/index.ts

@@ -179,7 +179,23 @@ async function setupAndRun(platformName?: string) {
 
   let config: Config | undefined;
   try {
-    config = loadConfig();
+    let selectedPlatform: string | undefined;
+
+    /*
+      When linking dependencies in iOS and Android build we're passing `--platform` argument,
+    to only load the configuration for the specific platform.
+    */
+    if (isCommandPassed('config')) {
+      const platformIndex = process.argv.indexOf('--platform');
+
+      if (platformIndex !== -1 && platformIndex < process.argv.length - 1) {
+        selectedPlatform = process.argv[platformIndex + 1];
+      }
+    }
+
+    config = loadConfig({
+      selectedPlatform,
+    });
 
     logger.enable();