I am converting React code to typescript, target in tsconfig is es5.
on running in IE 11 i get an error "Promise is undefined"
I know i need to polyfill,but how?
I am not using Babel.
Following is my Webpack.config
var webpack = require("webpack");
var Promise = require('es6-promise').Promise;
var paths = require('./config/paths');
var HtmlWebpackPlugin = require('html-webpack-plugin');
//var InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
var AureliaWebpackPlugin = require('aurelia-webpack-plugin');
var publicPath = '/';
var publicUrl = '';
module.exports = {
entry: {
app: [
'core-js/fn/promise',
'./Generated Files/app.js'
],
vendor: paths.vendorPath,
},
output: {
path:__dirname + "/dist",
filename: 'bundle.js',
publicPath: publicPath
},
devtool: '#source-map',
resolve: {
extensions: ['', '.webpack.js', '.web.js', '.ts', '.tsx', '.js']
},
module: {
loaders: [
{
test: /.tsx?$/,
loader: 'ts-loader',
exclude: /node_modules/
},
{
test: /\.css$/,
loader: 'style-loader!css-loader',
//exclude: /node_modules/,
},
{
test: /\.(ico|jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2)(\?.*)?$/,
loader: 'file',
query: {
name: 'static/media/[name].[hash:8].[ext]'
}
},
]
},
plugins: [
new webpack.HotModuleReplacementPlugin(),
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': JSON.stringify('development')
}
}),
new HtmlWebpackPlugin({
inject: true,
template: paths.appHtml,
}),
// For using jQuery
new webpack.ProvidePlugin({
$: "jquery",
jQuery: "jquery",
'window.jQuery': 'jquery',
'window.$': 'jquery',
}),
new webpack.ProvidePlugin({
"Promise": "promise-polyfill"
}),
// new AureliaWebpackPlugin(),
new webpack.optimize.CommonsChunkPlugin({/* chunkName= */name:"vendor", /* filename= */filename:'static/js/vendor.js'})
]
};
var ES6Promise = require("es6-promise");
ES6Promise.polyfill();
var axios = require("axios");
writing this above axios worked for me maybe other options also worked
it was mainly a cache issue in IE that i was facing
installing es6-promise-promise webpack plugin also worked
npm install es6-promise-promise
and include
new webpack.ProvidePlugin({
Promise: 'es6-promise-promise', // works as expected
});
in webpack plugins
i will edit this answer with more possible options
You need to include Polyfill to make it work in Internet Explorer.
import { polyfill } from 'es6-promise'; polyfill();
Include polypill for browsers/devices that need it.
Add this script:
<script src="https://cdn.polyfill.io/v2/polyfill.min.js"></script>
After that you can test in the console if the Promise is working in IE
var promise = new Promise(function (resolve, reject) {
setTimeout(function () {
resolve('bar');
}, 1000);
});
promise.then(function(result) {
console.log(result);
});