fix: not passing extra props to created component by

typescript issue in the returned function of the hoc

Author: davidpa9708

Diff for: src/UniformComponent.test.tsx

@@ -4,7 +4,9 @@ import { mount } from "enzyme"
 import { UniformComponent, UniformProps } from "./index"
 
 describe("<UniformComponent>", () => {
-  class TestUniformComponent extends React.Component<UniformProps<{ bar: string }>> {
+  class TestUniformComponent extends React.Component<
+    UniformProps<{ bar: string }, { asdf?: string }>
+  > {
     render() {
       return <input onChange={ev => this.props.data.change.bar(ev.target.value)} type="string" />
     }

Diff for: src/UniformComponent.tsx

@@ -1,17 +1,15 @@
 import React, { ComponentClass, SFC } from "react"
 import Data, { IData } from "handle-data-change"
 
-export { IData }
-
 export type IProps<D, P = {}> = {
   value: D
   onChange?: (newValue: D) => void
   path?: string[]
-} & P
+} & (P | {})
 
 export type UniformProps<D, P = {}> = {
   data: IData<D>
-} & P
+} & (P | {})
 
 function equal<T>(a: T, b: T) {
   return a === b
@@ -24,7 +22,7 @@ export function UniformComponent<D, H>(
   let uniValue: D = {} as D
   let uniPath: string[]
   let data = new Data<D>({} as D, uniOnChange)
-  return function<H>(props: IProps<D> & H) {
+  return function(props: IProps<D, H>) {
     const { onChange, value, defaultValue, path, ...rest } = props as any
     if (!equal(onChange, uniOnChange) || !equal(value, uniValue) || !equal(path, uniPath)) {
       uniOnChange = onChange

Diff for: src/UniformSelect.tsx

@@ -1,9 +1,14 @@
 import * as React from "react"
-import { IProps } from "./UniformComponent"
 import { SafeJoin, Omit } from "./type-helpers"
 
 export type UniformOptionProps<T> = SafeJoin<JSX.IntrinsicElements["option"], { value: T }>
 
+type IProps<D, P = {}> = {
+  value: D
+  onChange?: (newValue: D) => void
+  path?: string[]
+} & P
+
 export class UniformSelect<T extends string> extends React.Component<
   IProps<
     T,