New: Store type parameter constraints (fixes #188) (#189)

Author: Pajn

lib/ast-converter.js

@@ -636,7 +636,10 @@ module.exports = function(ast, extra) {
                             typeParameter.end
                         ],
                         loc: getLocFor(typeParameterStart, typeParameter.end, ast),
-                        name: typeParameter.name.text
+                        name: typeParameter.name.text,
+                        constraint: (typeParameter.constraint)
+                            ? convertTypeAnnotation(typeParameter.constraint)
+                            : null
                     };
                 })
             };

tests/fixtures/typescript/basics/arrow-function-with-type-parameters.result.js

@@ -262,7 +262,8 @@ module.exports = {
                                     "column": 2
                                 }
                             },
-                            "name": "X"
+                            "name": "X",
+                            "constraint": null
                         }
                     ]
                 }