I have an issue with importing axios in Vercel Serverless Functions. The function breaks depending on the way I import axios. I have created a discussion on vercel, a github issue and also created a reproducible demo repository. I find it annoying that I have to switch the way I import axios when I want the function to run locally (dev) and deploy without breaking.
I would like to know if there is a proper solution to this.
| Endpoint | Dev (Node 14.15.1) & (Node 18.15.0) | Deploy (Node 18.x) |
|---|---|---|
| https://vercel-serverless-axios-issue.vercel.app/api/axios-break | Working | Not working |
| https://vercel-serverless-axios-issue.vercel.app/api/axios-work | Not working | Working |
For axios-work I import axios like import axios from 'axios/dist/node/axios.cjs';
It works after deploying but breaks in dev giving below error
Error: Function `api/axios-work.js` failed with exit code 1
Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './dist/node/axios.cjs' is not defined by "exports" in E:\vercel-serverless-axios-issue\node_modules\axios\package.json
at throwExportsNotFound (internal/modules/esm/resolve.js:290:9)
at packageExportsResolve (internal/modules/esm/resolve.js:513:3)
at resolveExports (internal/modules/cjs/loader.js:432:36)
at Function.Module._findPath (internal/modules/cjs/loader.js:472:31)
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:867:27)
at Function.Module._resolveFilename.sharedData.moduleResolveFilenameHook.installedValue [as _resolveFilename] (C:\Users\ASUS\AppData\Roaming\npm\node_modules\vercel\node_modules\@cspotcode\source-map-support\source-map-support.js:811:30)
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (E:\vercel-serverless-axios-issue\api\axios-work.js:1:1) {
code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}
Error: Function `api/axios-work.js` failed with exit code 1
For axios-break I import axios like import axios from 'axios';
It works in dev but breaks after deploying giving below error
Cannot find module '/var/task/node_modules/axios/dist/node/axios.cjs'
Did you forget to add it to "dependencies" in `package.json`?
RequestId: c1845ce2-d588-4f0a-a478-95bfafacf92b Error: Runtime exited with error: exit status 1
Runtime.ExitError
