tsconfig target is not ignored for both dev and build

[htmnk]

Describe the bug

When target: es5 is set in tsconfig.json and vite.config.ts exists, Vite fails to start

with esbuild errors

ERROR: Transforming const to the configured target environment ("ES5") is not supported yet

Seems to be an issue with 3.1.0 and up

working example with 3.0.9:

https://stackblitz.com/edit/vitejs-vite-p9qdrs?file=package.json&terminal=dev

very likely related to

#9457

Reproduction

https://stackblitz.com/edit/vitejs-vite-wrp8cb?file=package.json&terminal=dev

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (4) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 16.14.2 - /usr/local/bin/node
    Yarn: 1.22.10 - /usr/local/bin/yarn
    npm: 7.17.0 - /usr/local/bin/npm
  npmPackages:
    vite: ^3.1.0 => 3.1.0

Used Package Manager

npm

Logs

No response

Validations

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• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
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• The provided reproduction is a minimal reproducible example of the bug.

[sapphi-red]

It seems there's a change in esbuild that is affecting this.

Transforming const a = 7 with --tsconfig-raw='{"compilerOptions": { "target": "ES5" }}' works with esbuild 0.15.7 but does not work with 0.15.8.

esbuild repl 0.15.7
esbuild repl 0.15.8

For a workaround, you could set esbuild.target: 'esnext'.

[htmnk]

@sapphi-red 's workaround to change the esbuild.target worked for me

[brillout]

Another related bug: https://github.com/brillout/vps-vite3.1-bug. For this bug setting vite.config.js#esbuild.target to esnext doesn't work (see the vite.config.js of the reproduction). However, setting tsconfig.json#compilerOptions.target to ES2020 does work.

I would have expected vite.config.js#esbuild.target to override tsconfig.json#compilerOptions.target?