import.meta contains wrong data

[sionzee]

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Describe the bug

Based on NodeJS doc or Mozzila doc the import.meta.url should return URL of the module.

Actually the import.meta is equal to this:

[Object: null prototype] {
  url: 'data:text/javascript,console.log(import.meta);\n' +
    'throw new Error();\n' +
    'var vite_config = {};\n' +
    '\n' +
    'export default vite_config;\n'
}

Reproduction

1. Set your package's type to module.
2. Create vite.config.ts and put there:

console.log(import.meta)
throw new Error() // otherwise the terminal will be emptied
export default {};

3. Run vite or vite build

System Info

• vite version: vite/2.0.0-beta.26 linux-x64 node-v14.13.0
• Operating System: Windows 10 (WSL)
• Node version: 14.13.0
• Package manager (npm/yarn/pnpm) and version: yarn 1.22.5

[underfin]

You can remove your package's type to module as a workaround.

[yyx990803]

Note for now we have to pre-transform import.meta.url because native ESM loader support is still experimental and we have to pre-bundle TS config files when using native ESM.

This maybe can be improved to use native loaders once it becomes stable in Node.