Category: Javascript
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Asserts are not just for testing
Assert is a general-purpose validator and should not be used in the context of testing alone. An assert in Javascript simply checks for truthy values and produces an error otherwise. -
unknown vs. any in Typescript
Why use unknown when we have any in Typescript? Type inferences are powerful and allows us to do magic when we don’t know types. -
Interfaces as function types in Typescript
Let’s get to know interfaces for functions - yes, that’s a thing. We have seen interfaces used as types and interfaces as array types. -
Modules in Typescript
It’s not the why, but more on what of ‘modules’. No Javascript is an island. It was an island about two decades back but Javascript has done some pretty good land reclaimation to form large continents now. -
Extend interfaces in Typescript
Interface an interface. If that doesn’t excite you, I don’t know what will. We have seen interfaces used as types before. -
Interfaces for Arrays in Typescript
What exactly are interfaces for arrays? Previously we have seen interfaces as types. Interfaces provide useful abstraction on class and can be useful in tricky situations with complex types. -
Anonymous functions in Typescript
Let’s talk anonymous functions and make them, well, “not anonymous”. Anonymous functions are just functions without names. If you have been following this blog, or have written some Javascript - you surely would have come across them. -
Abstract classes in Typescript
Why and how of using abstract classes in Typescript. We have seen a bit of classes and objects in Typescript previously. -
Non-number values for enum in Typescript
Use non-numbers in Typescript enums. enums have the following typical definition and usage - enum Colors { red, blue, green } console. -
Decorators in Typescript
Decorate a class, member or property to signify its specialty. Decorators are not available in Javascript but enable us to enhance our Typescript libraries and code. -
Type casting in Typescript
Typecast types in Typescript. That’s three “types” in a sentence with three significant words, and for that, I tap out. -
Typing collections in Typescript
How are collections typed in Typescript? Primitives are fairly easy to type - we have seen this while discussing Typescript and its types. -
Three quick ways to convert objects to arrays
Easily convert objects to arrays and iterate to your heart’s content. There are multiple ways of converting an object to an array (which, also is an object but a different one at that. -
A Different IIFE Syntax
Here’s a different syntax for our favourite IIFE’s. Immediately invoked function expressions enable us to write functions without using “functions”. Well - just kidding. -
Access modifiers in Typescript
Typescript supports public, private and protected modifiers that affect the accessibility of class in different ways. Access modifiers further a core concept of object oriented programming - ‘encapsulation’.