Code Shipping - Definition File (Declaration File, Stubs)

dynamic languages does not have any type system (by default). (a variable may store any kind of value.

To overcome this situation, developers create definition files that defines a library in terms of class, function and type signature.

These files are then used by IDE for code completion, code analysis.

• In javascript, they are known as declaration file
• In php, they are known as Php - Stubs