Discussion on "Typescript Best Practices #1 - Always prefer 'Type Declaration' over 'Type Assertion'"

Harshit Jain · 2021-09-01T13:11:32.669Z

In TypeScript, there are two ways of assigning a type to a variable. Type Declaration Type Assertion If you have ever written typescript code, you most probably would have used both of them at some point in time. So let's dive deep into what type d...

Great post..!! In last paragraph of post you mentioned ' Type assertion gives more safety '. is that typo mistake...??

Thanks for pointing that out. I have fixed it.

Type Assertion can be helpful in unit tests, when you need to create some typed object, but you don't need all its properties. Otherwise, I try to avoid it because it is almost like typing things with any.

Yes, that's also a common usecase 👍

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Typescript Best Practices #1 - Always prefer 'Type Declaration' over 'Type Assertion'

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Typescript Best Practices #1 - Always prefer 'Type Declaration' over 'Type Assertion'

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