dividab / tsconfig-paths

Load node modules according to tsconfig paths, in run-time or via API.
MIT License
1.8k stars 100 forks source link

Skip stat call / throwing an exception when source files don't exist in v3 (Backport of #225) #264

Open BPScott opened 8 months ago

BPScott commented 8 months ago

I saw that in #260 @jonaskello is amenable to backporting features to the v3 branch, as the majority of users are still on v3, (mostly thanks to the strong backwards compatibility promises made by eslint-plugin-import).

This PR backports the performance improving #225 to v3.15 - no editing needed, it's just a cherry-pick.

Details in #225 suggests that this offers a solid speed improvement. https://github.com/import-js/eslint-plugin-import/pull/2654 proposed updating tsconfig-paths from v3 to v4 in eslint-plugin-import as this change resulted in a 10-20% speed improvement in large repositories - I suspect in large part due to this one performance change. That PR was ultimately rejected due to eslint-plugin-import supporting a long tail of node versions, and thus wanting to stay on tsconfig-paths v3. eslint-plugin-import's author suggested backporting the performance fix to v3 so they could take advantage of it, so here I am.

225 was released as a patch version, so I assume this would be too.