you should include into the article that:
this error would not be fixed: issues serialize-to-js
$ npm audit
=== npm audit security report ===
┌──────────────────────────────────────────────────────────────────────────────┐
│ Manual Review │
│ Some vulnerabilities require your attention to resolve │
│ │
│ Visit https://go.npm.me/audit-guide for additional guidance │
└──────────────────────────────────────────────────────────────────────────────┘
┌───────────────┬──────────────────────────────────────────────────────────────┐
│ High │ Denial of Service │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package │ serialize-to-js │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in │ >=2.0.0 │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ parcel-bundler [dev] │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path │ parcel-bundler > serialize-to-js │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info │ https://npmjs.com/advisories/790 │
└───────────────┴──────────────────────────────────────────────────────────────┘
found 1 high severity vulnerability in 10336 scanned packages
1 vulnerability requires manual review. See the full report for details.
i fixed it with an additional npm install
/Users/muescha/Work/react/parcel-project/index.js: Cannot find module 'json5'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:582:15)
at Function.Module._load (internal/modules/cjs/loader.js:508:25)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (/Users/muescha/Work/react/parcel-project/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
at Object.<anonymous> (/Users/muescha/Work/react/parcel-project/node_modules/babel-core/lib/transformation/file/options/build-config-chain.js:19:13)
at Module._compile (/Users/muescha/Work/react/parcel-project/node_modules/v8-compile-cache/v8-compile-cache.js:194:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
at Module.load (internal/modules/cjs/loader.js:600:32)
at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
at Function.Module._load (internal/modules/cjs/loader.js:531:3)