Confussion on case in types in typescript

Question

While reviewing some code, I came across a mix of capitalized types in a typescript document.

Is there an actual difference between these - because VSCode, colorizes them differently and gives reference for caps, and no ref for all lower (string vs. String etc)

errorMessage: String = '';  
errorShow: Boolean = false; 

errorMessage: string = '';  
errorShow: boolean = false; 

I've had no problems running the code either way - but am curious if there is a distinction / difference

question from:https://stackoverflow.com/questions/65943330/confussion-on-case-in-types-in-typescript

Answer 1

String is the JavaScript String type, which you could use to create new strings. Nobody does this as in JavaScript the literals are considered better, so s2 in the example above creates a new string without the use of the new keyword and without explicitly using the String object.

string is the TypeScript string type, which you can use to type variables, parameters and return values.