Is it possible to define string.Empty in TypeScript?

Question

I am researching code conventions in TypeScript and C# and we have figured a rule to use string.Empty instead of "" in C#.

C# example:

doAction(""); doAction(string.Empty); // we chose to use this as a convention. 

TypeScript:

// only way to do it that I know of. doAction(""); 

Now is my question is there a way to keep this rule consistent in TypeScript as well or is this language specific?

Do any of you have pointers how to define an empty string in TypeScript?

Answer 1

If you really want to do that, you could write code to do this:

interface StringConstructor {      Empty: string; }  String.Empty = "";  function test(x: string) {  }  test(String.Empty); 

As you can see, there will be no difference in passing String.Empty or just "".

Answer 2

There is a type String which has a definition found in lib.d.ts (there are also other places this library is defined). It provides type member definitions on String that are commonly used like fromCharCode. You could extend this type with empty in a new referenced typescript file.

StringExtensions.ts

declare const String: StringExtensions; interface StringExtensions extends StringConstructor {     empty: ''; } String.empty = ''; 

And then to call it

otherFile.ts

doAction(String.Empty); // notice the capital S for String