[React Native] [1.1.0-beta.8] main module field that could not be resolved

[beetlebum]

error: Error: While trying to resolve module swr from file /project/src/core/api/common/ApiConfig.tsx, the package /project/node_modules/swr/package.json was successfully found. However, this package itself specifies a main module field that could not be resolved (/project/node_modules/swr/dist/index.mjs. Indeed, none of these files exist:

• /project/node_modules/swr/dist/index.mjs(.native|.ios.js|.native.js|.js|.ios.json|.native.json|.json|.ios.ts|.native.ts|.ts|.ios.tsx|.native.tsx|.tsx)
• /project/node_modules/swr/dist/index.mjs/index(.native|.ios.js|.native.js|.js|.ios.json|.native.json|.json|.ios.ts|.native.ts|.ts|.ios.tsx|.native.tsx|.tsx)
  at DependencyGraph.resolveDependency (/project/node_modules/metro/src/node-haste/DependencyGraph.js:311:17)
  at Object.resolve (/project/node_modules/metro/src/lib/transformHelpers.js:129:24)
  at resolve (/project/node_modules/metro/src/DeltaBundler/traverseDependencies.js:396:33)
  at /project/node_modules/metro/src/DeltaBundler/traverseDependencies.js:412:26
  at Array.reduce ()
  at resolveDependencies (/project/node_modules/metro/src/DeltaBundler/traverseDependencies.js:411:33)
  at processModule (/project/node_modules/metro/src/DeltaBundler/traverseDependencies.js:140:31)
  at async addDependency (/project/node_modules/metro/src/DeltaBundler/traverseDependencies.js:230:18)
  at async Promise.all (index 0)
  at async processModule (/project/node_modules/metro/src/DeltaBundler/traverseDependencies.js:198:5)

[huozhi]

Looks like metro currently doesn't support .mjs as source file extension
facebook/metro#535