fix(props): support BigInt in props type validation (vuejs#11191)

Author: AjiTae

src/core/util/props.js

@@ -147,7 +147,7 @@ function assertProp (
   }
 }
 
-const simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/
+const simpleCheckRE = /^(String|Number|Boolean|Function|Symbol|BigInt)$/
 
 function assertType (value: any, type: Function, vm: ?Component): {
   valid: boolean;

test/unit/features/options/props.spec.js

@@ -252,6 +252,16 @@ describe('Options props', () => {
         expect('Expected String, Number, got Symbol').toHaveBeenWarned()
       })
     }
+	
+    if (typeof BigInt !== 'undefined') {
+      /* global BigInt */
+      it('bigint', () => {
+        makeInstance(BigInt(100), BigInt)
+        expect(console.error.calls.count()).toBe(0)
+        makeInstance({}, BigInt)
+        expect('Expected BigInt, got Object').toHaveBeenWarned()
+      })
+    }
 
     it('custom constructor', () => {
       function Class () {}