Add support for bigint in prop-types (#1130)

* Add support for bigint in prop-types

* Fix types

Author: danez

.changeset/long-bikes-knock.md

@@ -0,0 +1,5 @@
+---
+'react-docgen': patch
+---
+
+Fix recognition of PropTypes.bigint as a built-in prop type

packages/react-docgen/src/Documentation.ts

@@ -36,6 +36,7 @@ export interface PropTypeDescriptor {
     | 'any'
     | 'array'
     | 'arrayOf'
+    | 'bigint'
     | 'bool'
     | 'custom'
     | 'element'

packages/react-docgen/src/utils/__tests__/getPropType-test.ts

@@ -8,6 +8,7 @@ describe('getPropType', () => {
   test('detects simple prop types', () => {
     const simplePropTypes = [
       'array',
+      'bigint',
       'bool',
       'func',
       'number',

packages/react-docgen/src/utils/getPropType.ts

@@ -217,6 +217,7 @@ function getPropTypeInstanceOf(
 
 const simplePropTypes = [
   'array',
+  'bigint',
   'bool',
   'func',
   'number',