TypeScript

A superset of JavaScript which adds optional static typing. Often used in larger app development.


Why do I get 'Cannot redeclare block-scoped variable X' in TypeScript?
How can I handle 'Cannot use 'new' with an expression whose type lacks a call or construct signature' in TypeScript?
What's the meaning of 'X is not a module' in TypeScript?
How do I resolve 'This expression is not callable' in TypeScript?
Why am I getting 'Expected X arguments, but got Y' in TypeScript?
What does 'Type 'X' is not assignable to type 'Y' mean in TypeScript?
How can I fix 'Object is possibly 'null' or 'undefined' in TypeScript?
'Argument of type X is not assignable to parameter of type Y' in TypeScript, what does it mean?
How to resolve 'Property X does not exist on type Y' in TypeScript?
Why am I seeing 'Cannot find name X' in TypeScript?
TypeScript: How can I work with dynamic keys in an object?
How do I type an array of numbers in TypeScript?
Why does TypeScript complain about implicit 'any' type?
How can I use an enum in TypeScript?
TypeScript: How can I enforce that an object has at least one property?
How do I make a property optional in a TypeScript interface?
Why is my function argument giving a type error in TypeScript?
TypeScript: Why am I getting a 'property does not exist on type' error?
How do I create a type that can be a string or number in TypeScript?
TypeScript: Why can't I reassign a variable declared with 'const'?