This warning seems to be a common occurence during building....

[phantomjinx]

Warning: ▲ [WARNING] "tsconfig.json" does not affect esbuild's own target setting [tsconfig.json]
[hawtio] 
[hawtio]     tsconfig.json:7:4:
[hawtio]       7 │     "target": "es2015",
[hawtio]         ╵     ~~~~~~~~
[hawtio] 
[hawtio]   This is because esbuild supports reading from multiple "tsconfig.json" files within a single build, and using different language targets for different files in the same build wouldn't be correct. If you want to set esbuild's language target, you should use esbuild's own global "target" setting such as with "target: 'es2015'".
[hawtio] 

Is this something of concern or should it just be ignored?

[tadayosi]

It has popped up after upgrading tsup. It should be related to some changes in esbuild/tsup. Ideally we should resolve the warning but simply removing the target entry from tsconfig.json doesn't seem to fix it. So far I don't see any harms in the warning.

[tadayosi]

Must be caused by this.

• target in tsconfig doesn't affect esbuild's runtime library evanw/esbuild#2628