fix: detect process before use (#172)

Access process as a property of `globalThis` instead of as a global
as parcel has stopped bundling the polyfill.

Fixes:

```
ipfs: @parcel/core: Failed to resolve 'process' from
ipfs: './node_modules/ipfs-utils/src/env.js'
ipfs:   /tmp/test-dependant-1646117523100/node_modules/ipfs-utils/src/env.js:10:57
ipfs:      9 | const IS_ELECTRON_RENDERER = IS_ELECTRON && IS_ENV_WITH_DOM
ipfs:   > 10 | peof process !== 'undefined' && typeof process.release !== 'undefined'
ipfs:   >    |      ^^^^^^^
ipfs:     11 | // @ts-ignore - we either ignore worker scope or dom scope
ipfs:     12 | const IS_WEBWORKER = typeof importScripts === 'function' && typeof self
ipfs: @parcel/resolver-default: Node builtin polyfill "process" is not installed, but
ipfs: auto install is disabled.
```

src/env.js

@@ -7,10 +7,10 @@ const IS_ELECTRON = isElectron()
 const IS_BROWSER = IS_ENV_WITH_DOM && !IS_ELECTRON
 const IS_ELECTRON_MAIN = IS_ELECTRON && !IS_ENV_WITH_DOM
 const IS_ELECTRON_RENDERER = IS_ELECTRON && IS_ENV_WITH_DOM
-const IS_NODE = typeof require === 'function' && typeof process !== 'undefined' && typeof process.release !== 'undefined' && process.release.name === 'node' && !IS_ELECTRON
+const IS_NODE = typeof require === 'function' && typeof globalThis.process !== 'undefined' && typeof globalThis.process.release !== 'undefined' && globalThis.process.release.name === 'node' && !IS_ELECTRON
 // @ts-ignore - we either ignore worker scope or dom scope
 const IS_WEBWORKER = typeof importScripts === 'function' && typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope
-const IS_TEST = typeof process !== 'undefined' && typeof process.env !== 'undefined' && process.env.NODE_ENV === 'test'
+const IS_TEST = typeof globalThis.process !== 'undefined' && typeof globalThis.process.env !== 'undefined' && globalThis.process.env.NODE_ENV === 'test'
 const IS_REACT_NATIVE = typeof navigator !== 'undefined' && navigator.product === 'ReactNative'
 
 module.exports = {