Read version directly from package.json (#90)

Author: erikras

package-lock.json

@@ -72,9 +72,10 @@
     "react": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-final-form": "^6.2.1",
-    "rollup": "^1.15.4",
+    "rollup": "^1.15.5",
     "rollup-plugin-babel": "^4.3.2",
     "rollup-plugin-commonjs": "^10.0.0",
+    "rollup-plugin-json": "^4.0.0",
     "rollup-plugin-node-resolve": "^5.0.2",
     "rollup-plugin-replace": "^2.2.0",
     "rollup-plugin-uglify": "^6.0.2",

package.json

@@ -1,6 +1,7 @@
 import resolve from 'rollup-plugin-node-resolve'
 import babel from 'rollup-plugin-babel'
 import commonjs from 'rollup-plugin-commonjs'
+import json from 'rollup-plugin-json'
 import { uglify } from 'rollup-plugin-uglify'
 import replace from 'rollup-plugin-replace'
 
@@ -56,6 +57,7 @@ export default {
   },
   plugins: [
     resolve({ jsnext: true, main: true }),
+    json(),
     commonjs({ include: 'node_modules/**' }),
     babel({
       exclude: 'node_modules/**',

rollup.config.js

@@ -4,7 +4,9 @@ import { version as rffVersion } from 'react-final-form'
 import type { FieldArrayProps } from './types'
 import renderComponent from './renderComponent'
 import useFieldArray from './useFieldArray'
-export const version = '3.1.0'
+import { version } from '../package.json'
+
+export { version }
 
 const versions = {
   'final-form': ffVersion,

src/FieldArray.js

@@ -4,14 +4,18 @@ import 'jest-dom/extend-expect'
 import arrayMutators from 'final-form-arrays'
 import { ErrorBoundary, Toggle } from './testUtils'
 import { Form, Field } from 'react-final-form'
-import FieldArray from './FieldArray'
+import { FieldArray, version } from '.'
 
 const onSubmitMock = values => {}
 const sleep = ms => new Promise(resolve => setTimeout(resolve, ms))
 
 describe('FieldArray', () => {
   afterEach(cleanup)
 
+  it('should export version', () => {
+    expect(version).toBeDefined()
+  })
+
   it('should warn if not used inside a form', () => {
     jest.spyOn(console, 'error').mockImplementation(() => {})
     const errorSpy = jest.fn()