SyntaxError: Missing initializer in const declaration. (1:16)

[NullVoxPopuli]

Describe the bug

I get this error:

SyntaxError: Missing initializer in const declaration. (1:16)
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:72:32
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:358:12
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:3335:19
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:15273:16
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:15066:10
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:10226:31
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:14608:21
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:10267:18
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:14533:17
 - /node_modules/.pnpm/@[email protected]/node_modules/@babel/parser/lib/index.js:15913:17

I am testing with babel plugins

Reproduction

this repo:
NullVoxPopuli/svg-icon-optimizer#1
branch: embroider-safe-limber-experiment

run pnpm exec vitest

this isn't minimally reproducible, but I find it goofy that the error is coming from@babel/parser -- because in a normal node environment this issue does not present itself.

System Info

System:
    OS: Linux 5.13 Ubuntu 21.10 21.10 (Impish Indri)
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
    Memory: 13.57 GB / 31.14 GB
    Container: Yes
    Shell: 5.1.8 - /bin/bash
  Binaries:
    Node: 16.15.0 - ~/.volta/tools/image/node/16.15.0/bin/node
    Yarn: 1.22.11 - ~/.volta/tools/image/yarn/1.22.11/bin/yarn
    npm: 8.5.5 - ~/.volta/tools/image/node/16.15.0/bin/npm
  Browsers:
    Chrome: 101.0.4951.41
    Firefox: 99.0.1
  npmPackages:
    vitest: ^0.10.0 => 0.10.0 

### Used Package Manager

pnpm

### Validations

- [X] Follow our [Code of Conduct](https://github.com/vitest-dev/vitest/blob/main/CODE_OF_CONDUCT.md)
- [X] Read the [Contributing Guidelines](https://github.com/vitest-dev/vitest/blob/main/CONTRIBUTING.md).
- [X] Read the [docs](https://vitest.dev/guide/).
- [X] Check that there isn't [already an issue](https://github.com/vitest-dev/vitest/issues) that reports the same bug to avoid creating a duplicate.
- [X] Check that this is a concrete bug. For Q&A open a [GitHub Discussion](https://github.com/vitest-dev/vitest/discussions) or join our [Discord Chat Server](https://chat.vitest.dev).
- [X] The provided reproduction is a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) of the bug.

[NullVoxPopuli]

in my case, if I just ignore support for "the older syntax" (don't worry about, it's only important for what I'm doing), I don't need to worry about this problem 😅

So, I guess this code path only occurs while trying to parse template literals.