Bug Report

Current Behavior
Ast structure is inconsistent for function like nodes.

requested change

• property params should be renamed to parameters
• property typeAnnotation should be renamed to returnType if used as return type

affected nodes

• TSCallSignatureDeclaration
• TSConstructSignatureDeclaration
• TSFunctionType
• TSConstructorType
• TSMethodSignature

Input Code

interface A {
  (a: string): string
  new(a: string): string
}

Other function like nodes (FunctionExpression, ArrowFunctionExpression, FunctionDeclaration, ....) have properties:

• typeParameters
• params
• returnType

Estree

https://github.com/estree/estree/blob/master/extensions/type-annotations.md#functions

Environment

• Babel version(s): 7.2.3
• Node/npm version: 6-11
• OS: win/linux
• Monorepo: no
• How you are using Babel: cli