我正在运行 React 16.2.0,我正在使用 PropTypes 15.6.1。我正在使用 ES6 语法和 Webpack。
我试图让 PropTypes 在我传递无效 Prop 时发出警告,但它不起作用。这是代码:
SimpleMessage.js
import React from "react"
import PropTypes from "prop-types"
class SimpleMessage extends React.Component {
render() {
return(
<p>{this.props.message}</p>
)
}
}
SimpleMessage.propTypes = {
message: PropTypes.func
}
export default SimpleMessage
index.js
import React from "react"
import ReactDOM from "react-dom"
import SimpleMessage from "./components/SimpleMessage"
window.React = React
ReactDOM.render(
<SimpleMessage message={"Hello World"} />,
document.getElementById("react-container")
)
webpack.config.js
var webpack = require("webpack")
var path = require("path")
process.noDeprecation = true
module.exports = {
entry: "./src/index.js",
output: {
path: path.join(__dirname, 'dist', 'assets'),
filename: "bundle.js",
sourceMapFilename: 'bundle.map'
},
devtool: '#source-map',
module: {
rules: [
{
test: /\.js$/,
exclude: /(node_modules)/,
loader: 'babel-loader',
query: {
presets: ['env', 'stage-0', 'react']
}
},
{
test: /\.css$/,
use: ['style-loader','css-loader', {
loader: 'postcss-loader',
options: {
plugins: () => [require('autoprefixer')]
}}]
},
{
test: /\.scss/,
use: ['style-loader','css-loader', {
loader: 'postcss-loader',
options: {
plugins: () => [require('autoprefixer')]
}}, 'sass-loader']
}
]
},
plugins: [
new webpack.DefinePlugin({
"process.env": {
NODE_ENV: JSON.stringify("production")
}
}),
new webpack.optimize.UglifyJsPlugin({
sourceMap: true,
warnings: false,
mangle: false
})
]
}
正如您可能注意到的那样,我正在传递一个字符串(“Hello World”),但检查 proptypes 中的函数。我没有收到 proptypes 的任何错误或警告,代码运行正常。
最佳答案
按预期工作:
Warning: Failed prop type: Invalid prop
message
of typestring
supplied toSimpleMessage
, expectedfunction
.
请务必检查您的浏览器控制台,这是显示错误的地方。
https://codepen.io/anon/pen/paGYjm?editors=1111
还有:
You shouldn’t apply UglifyJsPlugin or DefinePlugin with 'production' value in development because they will hide useful React warnings, and make the builds much slower.
关于javascript - PropTypes 在 React 中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49050730/