processFileChange()

in packages/metro/src/node-haste/ModuleCache.js [91:124]

• 29 lines of code
• 8 McCabe index (conditional complexity)

  processFileChange(type: string, filePath: string) {
    if (this._moduleCache[filePath]) {
      this._moduleCache[filePath].invalidate();
      delete this._moduleCache[filePath];
    }
    if (this._packageCache[filePath]) {
      this._packageCache[filePath].invalidate();
      delete this._packageCache[filePath];
    }
    if (this._packagePathByModulePath[filePath]) {
      // filePath is a module inside a package.
      const packagePath = this._packagePathByModulePath[filePath];
      delete this._packagePathByModulePath[filePath];
      // This change doesn't invalidate any cached "closest package.json"
      // queries for the package's other modules. Clean up only this module.
      const modulePaths = this._modulePathsByPackagePath[packagePath];
      if (modulePaths) {
        modulePaths.delete(filePath);
        if (modulePaths.size === 0) {
          delete this._modulePathsByPackagePath[packagePath];
        }
      }
    }
    if (this._modulePathsByPackagePath[filePath]) {
      // filePath is a package. This change invalidates all cached "closest
      // package.json" queries for modules inside this package.
      const modulePaths = this._modulePathsByPackagePath[filePath];
      for (const modulePath of modulePaths) {
        delete this._packagePathByModulePath[modulePath];
      }
      modulePaths.clear();
      delete this._modulePathsByPackagePath[filePath];
    }
  }