marktail

A Babel plugin that marks CallExpression AST nodes which are tail calls and/or proper tail calls.

Two properties are added to CallExpression nodes, tailCall and properTailCall.

• If tailCall is set to true then the CallExpression is in tail position.

• If properTailCall is set to true then the CallExpression is both in tail position and is a "Proper Tail Call".

This plugin is designed to be used with your own plugins which look for the tailCall and properTailCall properties within any CallExpression AST node.