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7 years ago
# TODO
- Make it easy to extend and add custom predicates
- Parse out the input string literal when possible to create good error messages:
```js
// Before
ow(obj.foo, ow.string);
// ArgumentError: Expected argument to be of type `string` but received type `null`
// After
ow(obj.foo, ow.string);
// ArgumentError: Expected argument `obj.foo` to be of type `string` but received type `null`
```
- Ability to reuse validations:
```js
const checkUsername = ow.create(ow.string.minLength(4));
checkUsername(username);
```
- At some point would be nice to parse the source on error and show the error pointing to the source. Using https://www.npmjs.com/package/babel-code-frame
- Ability to use custom assertions. Should be very easy to create. We can't bundle it all.
---
Feedback from Sam: https://gist.github.com/SamVerschueren/6e1c7e9f3183dbe1b7d8909c6ff07337