Can not build antd

[xialvjun]

create-snowpack-app my_app --template @snowpack/app-template-react-typescript --use-yarn
cd my_app
yarn add antd

# add `import { Button } from 'antd';` and `return <Button>TEST</Button>` in `App.tsx`

yarn start
# [warn] The 'this' keyword is equivalent to 'undefined' at the top level of an ES module, and has been rewritten * n
# open browser, in console: `Uncaught ReferenceError: process is not defined at antd.js:2953`

yarn.lock.txt

[FredKSchott]

Thanks! Do you see an issue in your console about needing the Node.js polyfill? Snowpack should be telling you how to resolve this, but we could be missing process as a polyfill.

See #639 for a proposed improvement to this workflow

[xialvjun]

// the compiled `web_modules/antd.js` has
if (process.env && "development" !== 'production' && typeof window !== 'undefined' && typeof document !== 'undefined') {xx}

// which originally is the bottom code in `node_modules/antd/dist/antd.js`
if (typeof process !== 'undefined' && process.env && "development" !== 'production' && typeof window !== 'undefined' && typeof document !== 'undefined') {xx}

I think it's not problems about polyfill. Antd use no any other node packages other than process, but I think webpack, rollup treat process specially, just replace process.env.ABC to it's value in that compile machine.
It has nothing to do with polyfill.

[FredKSchott]

Got it, yup we've seen these before. If you can make this change in a PR, I'd love to merge it and get this package running on Snowpack v2.7!

// snowpack/src/install.ts
-      'process.env.': '({}).',
+      'process.env': '({})',

[FredKSchott]

See #640 for context