how to change solid-start build `target`?

I tried this in app.config:

export default defineConfig({
  extensions: ["mdx", "md"],
  vite: {
    build: { target: "esnext" },
  },
})

export default defineConfig({
  extensions: ["mdx", "md"],
  vite: {
    build: { target: "esnext" },
  },
})

but when I put a top-level await in a module, then npm run build says this:

 ERROR  Transform failed with 1 error:                                                                               10:24:53 AM
/Users/trusktr/src/showcase/.vinxi/build/ssr/ssr.js:1:17460: ERROR: Top-level await is not available in the configured target environment ("es2019")

 ERROR  Transform failed with 1 error:                                                                               10:24:53 AM
/Users/trusktr/src/showcase/.vinxi/build/ssr/ssr.js:1:17460: ERROR: Top-level await is not available in the configured target environment ("es2019")

The top-level await is working fine in npm run dev, but I get that error only with build. How do we change the target?

5 Replies

Joe PeaOP•7mo ago

Ah, looks like I had to replace this,

  vite: {
    build: { target: "esnext" },
  }

  vite: {
    build: { target: "esnext" },
  }

with this,

  server: { esbuild: { options: { target: "esnext" } } },

  server: { esbuild: { options: { target: "esnext" } } },

which is confusing because when looking at intellisense in VS Code, it tells us that vite.build.target is for configuring the esbuild target:

Joe PeaOP•7mo ago

This is not clear from the solid-start docs, I found this clue by searching Discord conversations, f.e. https://discord.com/channels/722131463138705510/1228007897506644039/1270169209246060577 @docs-team ^ docs feature request, not clear how to change the target, and I think it would be obvious for people to assume that vite.build.target will control it For now I'll leave both vite.build.target and server.esbuild.options.target set to esnext, as I don't know if both are needed or not.

davedbase•7mo ago

A PR or issue to capture that would be awesome 🙂

rpivo•2mo ago

Thanks for sharing this @Joe Pea , I just ran into this same issue

Joe PeaOP•2mo ago

No prob!

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how to change solid-start build `target`?

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