Clear resolved modules cache before runJest in watch mode 🐛

jestjs · Jul 5, 2019 · debd2a8 · debd2a8
1 parent d051b0d
commit debd2a8
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Showing 4 changed files with 14 additions and 1 deletion.
diff --git a/packages/jest-core/package.json b/packages/jest-core/package.json
@@ -19,6 +19,7 @@
     "jest-haste-map": "^24.8.0",
     "jest-message-util": "^24.8.0",
     "jest-regex-util": "^24.3.0",
+    "jest-resolve": "^24.3.0",
     "jest-resolve-dependencies": "^24.8.0",
     "jest-runner": "^24.8.0",
     "jest-runtime": "^24.8.0",

diff --git a/packages/jest-core/src/watch.ts b/packages/jest-core/src/watch.ts
@@ -15,6 +15,7 @@ import {formatExecError} from 'jest-message-util';
 import {isInteractive, preRunMessage, specialChars} from 'jest-util';
 import {ValidationError} from 'jest-validate';
 import {Context} from 'jest-runtime';
+import Resolver from 'jest-resolve';
 import {Config} from '@jest/types';
 import {
   AllowedConfigOptions,
@@ -275,6 +276,9 @@ export default function watch(
     isRunning = true;
     const configs = contexts.map(context => context.config);
     const changedFilesPromise = getChangedFilesPromise(globalConfig, configs);
+    // Clear cache for required modules
+    Resolver.clearCache();
+
     return runJest({
       changedFilesPromise,
       contexts,

diff --git a/packages/jest-resolve/src/defaultResolver.ts b/packages/jest-resolve/src/defaultResolver.ts
@@ -44,6 +44,10 @@ export default function defaultResolver(
   });
 }
 
+export const clearResolverCache = () => {
+  checkedPaths.clear();
+};
+
 const REGEX_RELATIVE_IMPORT = /^(?:\.\.?(?:\/|$)|\/|([A-Za-z]:)?[\\\/])/;
 
 function resolveSync(

diff --git a/packages/jest-resolve/src/index.ts b/packages/jest-resolve/src/index.ts
@@ -12,7 +12,7 @@ import {sync as realpath} from 'realpath-native';
 import chalk from 'chalk';
 import nodeModulesPaths from './nodeModulesPaths';
 import isBuiltinModule from './isBuiltinModule';
-import defaultResolver from './defaultResolver';
+import defaultResolver, {clearResolverCache} from './defaultResolver';
 import {ResolverConfig} from './types';
 
 type FindNodeModuleConfig = {
@@ -79,6 +79,10 @@ class Resolver {
     this._modulePathCache = new Map();
   }
 
+  static clearCache() {
+    clearResolverCache();
+  }
+
   static findNodeModule(
     path: Config.Path,
     options: FindNodeModuleConfig,