can't add less as dependency

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Describe the bug

I use vite generate a project,Everything is fun after i install less as a dependency.

System Info

• required vite version: 1.0.0-rc.4
• required Operating System: mac10.15.6
• required Node version: 14.10.1
• Optional:
  • npm/yarn version yarn-1.21.1
  • Installed vue version (from yarn.lock or package-lock.json) 3.0.0-rc.12
  • Installed @vue/compiler-sfc version 3.0.0-rc.12

Logs (Optional if provided reproduction)

1. Run vite or vite build with the --debug flag.
2. Provide the error log here.

yarn run v1.21.1
warning package.json: No license field
$ vite --debug
vite v1.0.0-rc.4
  vite:config env mode: development +0ms
  vite:config env: {} +1ms
  vite:config config resolved in 3ms +1ms
  vite:resolve (node_module entry) date-fns -> esm/index.js +0ms
  vite:optimize optimizing date-fns (contains relative imports) +0ms
  vite:resolve (node_module entry) less -> ./lib/less-node/index +6ms
  vite:resolve (postfix) /Users/yuli/work/vite-test/node_modules/less/lib/less-node/index -> /Users/yuli/work/vite-test/node_modules/less/lib/less-node/index.js +0ms
  vite:optimize optimizing less (no exports, likely commonjs) +2ms
  vite:resolve (node_module entry) vue -> dist/vue.runtime.esm-bundler.js +2ms
  vite:optimize optimizing vue (imports sub dependencies) +1ms
[vite] Optimizable dependencies detected:
date-fns, less, vue
Pre-bundling them to speed up dev server page load...
(this will be run only when your dependencies have changed)

[vite] Dep optimization failed with error:
Dependency graceful-fs is attempting to import Node built-in module fs.
This will not work in a browser environment.
Imported by: node_modules/graceful-fs/graceful-fs.js

Tip:
Make sure your "dependencies" only include packages that you
intend to use in the browser. If it's a Node.js package, it
should be in "devDependencies".

If you do intend to use this dependency in the browser and the
dependency does not actually use these Node built-ins in the
browser, you can add the dependency (not the built-in) to the
"optimizeDeps.allowNodeBuiltins" option in vite.config.js.

If that results in a runtime error, then unfortunately the
package is not distributed in a web-friendly format. You should
open an issue in its repo, or look for a modern alternative.
error Command failed with exit code 1.

Graceful-fs is a optionalDependency of Less

[underfin]

If you don’t want this behavior, you can add them into exclude inside optimizeDeps.

[905868332]

If you don’t want this behavior, you can add them into exclude inside optimizeDeps.

How to support require