![Rafael Calpena on Twitter: "#typescript question: How can I infer types for a pipeable filter function? Array must be sent as last argument. https://t.co/huZLzBcmmS https://t.co/WAfzHqk4nh" / Twitter Rafael Calpena on Twitter: "#typescript question: How can I infer types for a pipeable filter function? Array must be sent as last argument. https://t.co/huZLzBcmmS https://t.co/WAfzHqk4nh" / Twitter](https://pbs.twimg.com/media/EyJssL3WQAUbz-O.png)
Rafael Calpena on Twitter: "#typescript question: How can I infer types for a pipeable filter function? Array must be sent as last argument. https://t.co/huZLzBcmmS https://t.co/WAfzHqk4nh" / Twitter
javascript,typescript,With typescript, the input parameters are allowed to be array and object. Internally, how do you solve the problem of reporting errors using the filter method?
Infer type guard => array.filter(x => !!x) should refine Array<T|null> to Array<T> · Issue #16069 · microsoft/TypeScript · GitHub
![angular - How to use array filter based on index without using element callback in typescript - Stack Overflow angular - How to use array filter based on index without using element callback in typescript - Stack Overflow](https://i.stack.imgur.com/p2W9D.png)