I'm trying to modify my metro.config.js file so that it will not ignore an npm package's main
module.
This is the error message I receive at runtime:
error: Error: While trying to resolve module `@apollo/client` from file `<project-directory>/src/ApolloProvider.tsx`, the package `<project-directory>/node_modules/@apollo/client/package.json` was successfully found. However, this package itself specifies a `main` module field that could not be resolved (`<project-directory>/node_modules/@apollo/client/main.cjs`. Indeed, none of these files exist: * <project-directory>/node_modules/@apollo/client/main.cjs(.native|.ios.jsx|.native.jsx|.jsx|.ios.js|.native.js|.js|.ios.ts|.native.ts|.ts|.ios.tsx|.native.tsx|.tsx|.ios.|.native.|.|.ios.json|.native.json|.json) * <project-directory>/node_modules/@apollo/client/main.cjs/index(.native|.ios.jsx|.native.jsx|.jsx|.ios.js|.native.js|.js|.ios.ts|.native.ts|.ts|.ios.tsx|.native.tsx|.tsx|.ios.|.native.|.|.ios.json|.native.json|.json) at DependencyGraph.resolveDependency (<project-directory>/node_modules/metro/src/node-haste/DependencyGraph.js:311:17) at Object.resolve (<project-directory>/node_modules/metro/src/lib/transformHelpers.js:129:24) at resolve (<project-directory>/node_modules/metro/src/DeltaBundler/traverseDependencies.js:396:33) at <project-directory>/node_modules/metro/src/DeltaBundler/traverseDependencies.js:412:26 at Array.reduce (<anonymous>) at resolveDependencies (<project-directory>/node_modules/metro/src/DeltaBundler/traverseDependencies.js:411:33) at processModule (<project-directory>/node_modules/metro/src/DeltaBundler/traverseDependencies.js:140:31) at processTicksAndRejections (internal/process/task_queues.js:93:5) at addDependency (<project-directory>/node_modules/metro/src/DeltaBundler/traverseDependencies.js:230:18) at async Promise.all (index 3)
I can clearly see that <project-directory>/node_modules/@apollo/client/main.cjs
exists, but it appears that the resolver is always trying to append an extension (whereas the main.cjs
file described above needs no extension).
The following is my metro.config.js
file:
module.exports = { transformer: { getTransformOptions: async () => ({ transform: { experimentalImportSupport: false, inlineRequires: true, }, }), }, resolver: { sourceExts: ['jsx', 'js', 'ts', 'tsx', ''], },};
As you can see I've tried adding an empty string to the sourceExts
property's Array, but that doesn't solve the issue.
Any idea how to get this Metro to resolve this main.cjs
file correctly?