feat(ios): warn user if pod install was not run

packages/platform-ios/package.json

@@ -6,10 +6,12 @@
   "dependencies": {
     "@react-native-community/cli-tools": "^2.8.3",
     "chalk": "^2.4.2",
+    "js-yaml": "^3.13.1",
     "xcode": "^2.0.0"
   },
   "devDependencies": {
     "@react-native-community/cli-types": "^3.0.0-alpha.2",
+    "@types/js-yaml": "^3.12.1",
     "@types/plist": "^3.0.2"
   },
   "files": [

packages/platform-ios/src/commands/runIOS/index.ts

@@ -18,6 +18,7 @@ import findXcodeProject, {ProjectInfo} from './findXcodeProject';
 import parseIOSDevicesList from './parseIOSDevicesList';
 import findMatchingSimulator from './findMatchingSimulator';
 import warnAboutManuallyLinkedLibs from '../../link/warnAboutManuallyLinkedLibs';
+import warnAboutPodInstall from '../../link/warnAboutPodInstall';
 import {
   logger,
   CLIError,
@@ -46,6 +47,7 @@ function runIOS(_: Array<string>, ctx: Config, args: FlagsT) {
   }
 
   warnAboutManuallyLinkedLibs(ctx);
+  warnAboutPodInstall(ctx);
 
   process.chdir(args.projectPath);
 

packages/platform-ios/src/link-pods/getDependenciesFromPodfileLock.ts

@@ -0,0 +1,22 @@
+import fs from 'fs';
+import chalk from 'chalk';
+import {logger} from '@react-native-community/cli-tools';
+import {safeLoad} from 'js-yaml';
+
+export default function getDependenciesFromPodfileLock(
+  podfileLockPath: string,
+) {
+  logger.debug(`Reading ${podfileLockPath}`);
+  let fileContent;
+  try {
+    fileContent = fs.readFileSync(podfileLockPath, 'utf8');
+  } catch (err) {
+    logger.error(
+      `Could not find "Podfile.lock" at ${chalk.dim(
+        podfileLockPath,
+      )}. Did you run "${chalk.bold('pod install')}" in iOS directory?`,
+    );
+    return [];
+  }
+  return Object.keys(safeLoad(fileContent)['SPEC CHECKSUMS'] || {});
+}

packages/platform-ios/src/link/warnAboutPodInstall.ts

@@ -0,0 +1,29 @@
+import path from 'path';
+import chalk from 'chalk';
+import {logger} from '@react-native-community/cli-tools';
+import {Config} from '@react-native-community/cli-types';
+import getDependenciesFromPodfileLock from '../link-pods/getDependenciesFromPodfileLock';
+
+export default function warnAboutPodInstall(config: Config) {
+  const podLockDeps = getDependenciesFromPodfileLock(
+    `${config.project.ios!.podfile}.lock`,
+  );
+  const podDeps = Object.keys(config.dependencies)
+    .map(depName => {
+      const dependency = config.dependencies[depName].platforms.ios;
+      return dependency
+        ? path.basename(dependency.podspecPath).replace(/\.podspec/, '')
+        : '';
+    })
+    .filter(Boolean);
+
+  const missingPods = podDeps.filter(podDep => !podLockDeps.includes(podDep));
+
+  if (missingPods.length) {
+    logger.error(
+      `Could not find the following native modules: ${missingPods
+        .map(pod => chalk.bold(pod))
+        .join(', ')}. Did you forget to run "${chalk.bold('pod install')}" ?`,
+    );
+  }
+}

yarn.lock

@@ -2084,6 +2084,11 @@
   dependencies:
     "@types/jest-diff" "*"
 
+"@types/js-yaml@^3.12.1":
+  version "3.12.1"
+  resolved "https://registry.yarnpkg.com/@types/js-yaml/-/js-yaml-3.12.1.tgz#5c6f4a1eabca84792fbd916f0cb40847f123c656"
+  integrity sha512-SGGAhXLHDx+PK4YLNcNGa6goPf9XRWQNAUUbffkwVGGXIxmDKWyGGL4inzq2sPmExu431Ekb9aEMn9BkPqEYFA==
+
 "@types/json5@^0.0.29":
   version "0.0.29"
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
@@ -5784,7 +5789,7 @@ js-levenshtein@^1.1.3:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.12.0, js-yaml@^3.13.0, js-yaml@^3.9.0:
+js-yaml@^3.12.0, js-yaml@^3.13.0, js-yaml@^3.13.1, js-yaml@^3.9.0:
   version "3.13.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
   integrity sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==