Please your library user with typescript generic

In typescript, generic is a tool that api/library author to please its consumer. What does this means.

Class field initialization in typescript

In typescript class, you can define your field initialization in multiple ways. Here is one typical way to do that.

A JavaScript interview question which can be fixed by 'let'

A very popular JavaScript interview question on Lexical scope and closure is like the follow.

Minimize the price (not the benefit) of type in Typescript

I watched Anders Hejlsberg introducing typescript in 2012. Then I thought I don't have the problem it tries to solve. Type in Javascript has not yet caused any problem for me, as I have unit test, renaming and intellisense is also not a problem for me, because I have webstorm. Then, I found that Douglas Crockford said something in google plus

TypeScript is duck typing.

When I see a bird that walks like a duck and swims like a duck and quacks like a duck, I call that bird a duck.