Failed to parse source map from '****/angular-fetch.ts' file: Error: ENOENT: no such file or directory, open '/***/angular-fetch.ts'

[vik-buchinski]

The source maps starting from version 4.0.0 are broken.
What I have in the logs:

`
WARNING in ../../node_modules/flagsmith/index.js
Module Warning (from ../../node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/vik.buchinski/Documents/github/utils/angular-fetch.ts' file: Error: ENOENT: no such file or directory, open '/Users/vik.buchinski/Documents/github/utils/angular-fetch.ts'

WARNING in ../../node_modules/flagsmith/index.js
Module Warning (from ../../node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/vik.buchinski/Documents/github/utils/async-storage.ts' file: Error: ENOENT: no such file or directory, open '/Users/vik.buchinski/Documents/github/utils/async-storage.ts'

WARNING in ../../node_modules/flagsmith/index.js
Module Warning (from ../../node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/vik.buchinski/Documents/github/utils/get-changes.ts' file: Error: ENOENT: no such file or directory, open '/Users/vik.buchinski/Documents/github/utils/get-changes.ts'

WARNING in ../../node_modules/flagsmith/index.js
Module Warning (from ../../node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/vik.buchinski/Documents/github/utils/set-dynatrace-value.ts' file: Error: ENOENT: no such file or directory, open '/Users/vik.buchinski/Documents/github/utils/set-dynatrace-value.ts'

WARNING in ../../node_modules/flagsmith/react.js
Module Warning (from ../../node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/vik.buchinski/Documents/github/utils/emitter.ts' file: Error: ENOENT: no such file or directory, open '/Users/vik.buchinski/Documents/github/utils/emitter.ts'

webpack compiled with 5 warnings (ee8a793b344e9aca)
`

[matthewelwell]

Hi @vik-buchinski, please can you provide some more information here? Can you confirm exactly what steps you're taking to see these errors, and how they manifest? It seems like they are just warnings at the moment rather than errors so I'm interested to know what effect this is having.

[vik-buchinski]

@matthewelwell TBH, I didn't test the flagsmith after I saw these warnings. I just reverted to version 3 and warnings disappeared.

But anyway, there is some issue with sourcemaps in the flagsmith library version 4, it can't point from 1 file to another correctly, and instead goes to 2-3 levels higher than the root of the project to look for the .ts files that are located in the node-modules.

[matthewelwell]

Ok, thanks @vik-buchinski - we'll take a look into it.

[abadi-avela]

@matthewelwell We also ran into this issue , so far I'm able to reproduce on v3.24.0 and v4.1.3. Here's the SSCCE of this issue: https://github.com/abadi-avela/sscce-flagsmith. I hope this helps.

[matthewelwell]

Ok, thanks for this @abadi-avela, we'll take a look into it this week.

[kyle-ssg]

Apologies for the late reply, there is now a PR linked that fixes this. In the meantime, I've published [email protected] which resolves that issue.

[kyle-ssg]

This is now released under version 8.0.1 🚀