Fix wrong AST (#34)

Author: ota-meshi

src/context/script-let.ts

@@ -377,6 +377,9 @@ export class ScriptLetContext {
                     for (let index = 0; index < fn.params.length; index++) {
                         const p = fn.params[index]
                         ;(p as any).parent = parents![index]
+                        if (this.ctx.isTypeScript()) {
+                            delete (p as any).typeAnnotation
+                        }
                     }
 
                     // Process for scope

tests/fixtures/parser/ast/ts-promise01-output.json

@@ -806,75 +806,6 @@
         "error": {
           "type": "Identifier",
           "name": "error",
-          "typeAnnotation": {
-            "type": "TSTypeAnnotation",
-            "typeAnnotation": {
-              "type": "TSParenthesizedType",
-              "typeAnnotation": {
-                "type": "TSTypeReference",
-                "typeName": {
-                  "type": "Identifier",
-                  "name": "Error",
-                  "range": [
-                    207,
-                    212
-                  ],
-                  "loc": {
-                    "start": {
-                      "line": 10,
-                      "column": 2
-                    },
-                    "end": {
-                      "line": 10,
-                      "column": 7
-                    }
-                  }
-                },
-                "range": [
-                  207,
-                  212
-                ],
-                "loc": {
-                  "start": {
-                    "line": 10,
-                    "column": 2
-                  },
-                  "end": {
-                    "line": 10,
-                    "column": 7
-                  }
-                }
-              },
-              "range": [
-                206,
-                213
-              ],
-              "loc": {
-                "start": {
-                  "line": 10,
-                  "column": 1
-                },
-                "end": {
-                  "line": 10,
-                  "column": 8
-                }
-              }
-            },
-            "range": [
-              204,
-              213
-            ],
-            "loc": {
-              "start": {
-                "line": 9,
-                "column": 14
-              },
-              "end": {
-                "line": 10,
-                "column": 8
-              }
-            }
-          },
           "range": [
             198,
             213
@@ -1278,75 +1209,6 @@
         "value": {
           "type": "Identifier",
           "name": "number",
-          "typeAnnotation": {
-            "type": "TSTypeAnnotation",
-            "typeAnnotation": {
-              "type": "TSParenthesizedType",
-              "typeAnnotation": {
-                "type": "TSTypeQuery",
-                "exprName": {
-                  "type": "Identifier",
-                  "name": "promise",
-                  "range": [
-                    166,
-                    173
-                  ],
-                  "loc": {
-                    "start": {
-                      "line": 8,
-                      "column": 9
-                    },
-                    "end": {
-                      "line": 8,
-                      "column": 16
-                    }
-                  }
-                },
-                "range": [
-                  159,
-                  173
-                ],
-                "loc": {
-                  "start": {
-                    "line": 8,
-                    "column": 2
-                  },
-                  "end": {
-                    "line": 8,
-                    "column": 16
-                  }
-                }
-              },
-              "range": [
-                158,
-                174
-              ],
-              "loc": {
-                "start": {
-                  "line": 8,
-                  "column": 1
-                },
-                "end": {
-                  "line": 8,
-                  "column": 17
-                }
-              }
-            },
-            "range": [
-              156,
-              174
-            ],
-            "loc": {
-              "start": {
-                "line": 7,
-                "column": 14
-              },
-              "end": {
-                "line": 8,
-                "column": 17
-              }
-            }
-          },
           "range": [
             149,
             174