feat(formlyConfigProvider): Expose field types map from formlyConfigProvider

For a plugin I am writing that renders an inspector showing the current configuration for formly, I
need access to the types that have been registered with formly. This change exposes the map of type
name to type configuration object via a new method on formlyConfigProvider called getTypes().

This is in support of issue #663

Author: pcardune

src/providers/formlyConfig.js

@@ -15,6 +15,7 @@ function formlyConfig(formlyUsabilityProvider, formlyErrorAndWarningsUrlPrefix,
   angular.extend(this, {
     setType,
     getType,
+    getTypes,
     getTypeHeritage,
     setWrapper,
     getWrapper,
@@ -161,6 +162,10 @@ function formlyConfig(formlyUsabilityProvider, formlyErrorAndWarningsUrlPrefix,
     }
   }
 
+  function getTypes() {
+    return typeMap
+  }
+
   function getTypeHeritage(parent) {
     const heritage = []
     let type = parent

src/providers/formlyConfig.test.js

@@ -185,8 +185,8 @@ describe('formlyConfig', () => {
   })
 
 
-  describe('setType/getType', () => {
-    let getterFn, setterFn
+  describe('setType/getType/getTypes', () => {
+    let getterFn, setterFn, getTypesFn
     const name = 'input'
     const template = '<input type="{{options.inputType}}" />'
     const templateUrl = '/input.html'
@@ -195,6 +195,7 @@ describe('formlyConfig', () => {
     beforeEach(inject(function(formlyConfig) {
       getterFn = formlyConfig.getType
       setterFn = formlyConfig.setType
+      getTypesFn = formlyConfig.getTypes
     }))
 
     describe('＼(＾O＾)／ path', () => {
@@ -217,6 +218,14 @@ describe('formlyConfig', () => {
         expect(getterFn('type2').templateUrl).to.equal(templateUrl)
       })
 
+      it('should expose the mapping from type name to config', () => {
+        setterFn([
+          {name, template},
+          {name: 'type2', templateUrl},
+        ])
+        expect(getTypesFn()).to.eql({[name]: getterFn(name), type2: getterFn('type2')})
+      })
+
       it('should allow you to set a wrapper as a string', () => {
         setterFn({name, template, wrapper})
         expect(getterFn(name).wrapper).to.equal(wrapper)