RelayCompilerMain.js uncatchable errors

I'm using relay-compiler as library directly in my node javascript code and not the cli to automatically re-run relay-compiler when a change is detected. If there are no errors, continue recompiling rest of the javascript code using webpack. If error is detected, print out the error and wait for new changes.

```javascript
import { main } from 'relay-compiler/lib/RelayCompilerMain';

try {
main({
schema,
src,
// ... etc
}).catch(e => {
console.error(e);
});
} catch(e) {
console.error(e);
};
```

The piece of code above is unable to catch RelayParser errors thrown inside RelayCompilerMain.js and terminates the process with:
```
RelayParser: Encountered 1 error(s):
- Unknown field 'title' on type 'Post'. Source: document `usePost_post` file: `hooks/usePost.js`

hooks/usePost.js:7:5
6 | title
7 | content
| ^
8 | }
```

I'm using relay-compiler v5.0.0