AbilityBuilder in ts - expected 1 arguments but got 0

[jeremygottfried]

Describe the bug When using typescript and following the docs, I get two errors:

1. On new AbilityBuilder(), the error is expected 1 arguments but got 0.
2. On new Ability(rules), the error is To Reproduce

   
   import { AbilityBuilder, Ability } from '@casl/ability';

export default function defineAbilitiesFor() { const { can, rules } = new AbilityBuilder();

return new Ability(rules); };

**Expected behavior**
For the simplest example from the docs to work

**CASL Version**

<!-- leave packages which you use -->

`@casl/ability` - v 5.2.2

**Environment**:
<!-- Nodejs version or Browser version or TypeScript version -->
Node 12.16.3
Typescript 4.1.3
ts-node 9.1.1
MacOS Catalina 10.15.1

[jeremygottfried]

This seems to be a documentation issue. https://github.com/stalniy/casl#1-define-abilities

The example there doesn't have Ability as an argument to AbilityBuilder

I will submit a PR to correct it

[stalniy]

Thank you!

[stalniy]

Yes, starting from v5 AbilityBuilder requires a parameter. Just to make sure people understand which Ability class is going to build.