feat: add type field for WrappedToken (#822)

* feat: add type field for WrappedToken

One could check the list type to see the child type, but this may provide extra convenience if the caller wants to do something like `list.value.map(forEachValue)`

Fixes #818

* Update README.md

Author: saschanaz

README.md

@@ -720,6 +720,7 @@ Extended attributes look like this:
 * `type`: Always `"extended-attribute"`.
 * `rhs`: If there is a right-hand side, this will capture its `type` and `value`. The
   type can be one of the following:
+
    * `"identifier"`
    * `"identifier-list"`
    * `"string"`
@@ -729,6 +730,8 @@ Extended attributes look like this:
    * `"integer"`
    * `"integer-list"`
    * `"*"`
+
+   Each child of a list has its own `type` of `value`, e.g. `type: "identifier"` for `"identifier-list"`.
 * `parent`: The container of this type as an Object.
 
 ### Default and Const Values

lib/productions/token.js

@@ -18,6 +18,10 @@ export class WrappedToken extends Base {
     };
   }
 
+  get type() {
+    return this.tokens.value.type;
+  }
+
   get value() {
     return unescape(this.tokens.value.value);
   }

test/syntax/baseline/extended-attributes.json

@@ -12,9 +12,11 @@
                     "type": "identifier-list",
                     "value": [
                         {
+                            "type": "identifier",
                             "value": "Worker"
                         },
                         {
+                            "type": "identifier",
                             "value": "ServiceWorker"
                         }
                     ]
@@ -82,9 +84,11 @@
                     "type": "identifier-list",
                     "value": [
                         {
+                            "type": "identifier",
                             "value": "null"
                         },
                         {
+                            "type": "identifier",
                             "value": "const"
                         }
                     ]
@@ -98,6 +102,7 @@
                     "type": "decimal-list",
                     "value": [
                         {
+                            "type": "decimal",
                             "value": "3.14"
                         }
                     ]

test/syntax/baseline/reflector-interface.json

@@ -63,9 +63,11 @@
                             "type": "string-list",
                             "value": [
                                 {
+                                    "type": "string",
                                     "value": "\"anonymous\""
                                 },
                                 {
+                                    "type": "string",
                                     "value": "\"use-credentials\""
                                 }
                             ]
@@ -101,9 +103,11 @@
                             "type": "integer-list",
                             "value": [
                                 {
+                                    "type": "integer",
                                     "value": "1"
                                 },
                                 {
+                                    "type": "integer",
                                     "value": "4"
                                 }
                             ]