Build fails when HMR snippet is present

[qpre]

Hello,

When using HMR in a React app with the following snippet in the entry file :

// Hot Module Replacement (HMR) - Remove this snippet to remove HMR.
// Learn more: https://www.snowpack.dev/concepts/hot-module-replacement
if (undefined /* [snowpack] import.meta.hot */) {
  undefined /* [snowpack] import.meta.hot */
    .accept();
}

(based on : https://www.snowpack.dev/concepts/hot-module-replacement )

it works fine with snowpack dev but snowpack build fails immediately with :

[13:55:00] [snowpack] Build Result Error: There was a problem with a file build result.
[13:55:00] [snowpack] Parse error @:27:63
[13:55:00] [snowpack] Error: Parse error @:27:63
    at parse$n (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:117254:379)
    at scanCodeImportsExports (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:120554:29)
    at transformEsmImports (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:120570:27)
    at Object.transformFileImports (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:120641:16)
    at FileBuilder.resolveImports (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:157588:45)
    at async Object.loadUrl (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:177117:39)
    at async flushFileQueue (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:177580:24)
    at async Object.buildFiles (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:177613:5)
    at async build (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:177711:5)
    at async Object.command (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:177735:9)
    at async cli (/Users/qpre/projects/app/mobile/node_modules/snowpack/lib/index.js:178047:9)

The build runs fine if I remove the HMR snippet. surrounding the snippet with a test on __SNOWPACK_ENV__.MODE does not fix the issue.

How can I circumvent this issue ?