I'm trying to create JS widgets from my existing react app. So currently I have an app that looks something like this
-src
- config
- components
- containers
- lib
- assets
- widgets
- widgetOne
- widgetTwo
- components
- widget.js
- index.js
- index.js
- index.html
So, I want directories in the widgets directories to be self contained apps that I can break out into a separate js file and a client can just add the js script into their page in a script tag.
I've come close but still facing a few issues. Also, I wanted to see if someone had experience doing this following a better pattern.
Right now I'm using webpack to do this splitting. I'm just defining /src/widgets/widgetOne/index.js as an entry point and perfectly creates a separate file.
Here is my webpack:
const appConstants = function() {
switch (process.env.NODE_ENV) {
case 'local':
const localConfig = require('./config/local');
return localConfig.config();
case 'development':
const devConfig = require('./config/development');
return devConfig.config();
case 'production':
default:
const prodConfig = require('./config/production');
return prodConfig.config();
}
};
const HtmlWebPackPlugin = require("html-webpack-plugin");
const webpack = require('webpack');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const htmlWebpackPlugin = new HtmlWebPackPlugin({
template: "./src/index.html",
filename: "./index.html",
hash: true
});
let webpackConfig = {
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: "babel-loader"
}
},
{
test: /\.css$/,
exclude: [ /assets/, /node_modules/ ],
use: [
{
loader: "style-loader"
},
{
loader: "css-loader",
options: {
modules: true,
importLoaders: 1,
localIdentName: "[name]_[local]_[hash:base64]",
sourceMap: true,
minimize: true
}
}
]
},
{
test: /\.(pdf|jpg|png|gif|svg|ico)$/,
exclude: [/node_modules/],
use: [
{
loader: 'file-loader'
},
]
},
{
test: /\.(woff|woff2|eot|ttf|svg)$/,
exclude: [/node_modules/],
use: {
loader: 'url-loader?limit100000'
}
}
]
},
entry: {
main: [ "#babel/polyfill", "./src/index.js"],
widgetOne: ["./src/widgets/widgetOne/index.js"]
},
output: {
publicPath: appConstants().BASENAME ? JSON.parse(appConstants().BASENAME) : '/'
},
optimization: {
splitChunks: {
chunks: 'all'
}
},
plugins: [
htmlWebpackPlugin,
new webpack.ContextReplacementPlugin(/moment[/\\]locale$/, /en/),
new BundleAnalyzerPlugin({
analyzerMode: 'disabled',
generateStatsFile: true,
statsOptions: { source: false }
}),
new webpack.DefinePlugin({
'process.env': appConstants()
}),
new webpack.EnvironmentPlugin(['NODE_ENV'])
],
devServer: {
historyApiFallback: true,
port: 9090
}
};
module.exports = webpackConfig;
The problem I have now is while I get the widgetOne.js:
1) I end up with a vendor~widgetOne.js file that I also need to include to make the widgetOne app to work.
2) The widgetOne.js also gets added to my index.html file for my main app which I do not want.
Is there a way to configure webpack properly to make this work?
So, this is the solution I came up with that seems to work. I still don't know if this is the best approach but it' the only one I was able to get to work for me.
I decided to build the widgets as a different environment process and and modify the webpack configs based on that environment.
So the package.json I add this line under scritps:
"build-widgets": "cross-env NODE_ENV=plugins webpack --mode development",
And I added this section to the end of my webpack.config.js file:
// Override webpack configs when building plugins
if ( process.env.NODE_ENV === 'plugins') {
webpackConfig.entry = {
widgetOne: [ "#babel/polyfill", "./src/plugins/widgetOne/index.js"]
}
webpackConfig.output = {
publicPath: appConstants().DS_BASENAME ? JSON.parse(appConstants().DS_BASENAME) : '/',
path: __dirname + '/dist/widgets',
library: 'MyApp',
libraryTarget: 'umd',
umdNamedDefine: true
}
}
Alternatively, I could have just added a second webpack.config.js exclusively to deal with my widgets build. In my case I didn't feel the need for it just yet but it's something to be considered for sure, just for the sake of keeping configs separate.
I'm using CRA 2.1.3 and use git submodule to share a repo with common functions with other applications (such as our mobile app). Working on an existing code base so I don't have the luxury of changing the way things are done.
Im trying to import files from the submodule but CRA disallows imports outside of src so I had to eject the app, now I cannot figure out how to import files from the submodule and get them to transpile through babel.
The error I get:
Module parse failed: The keyword 'enum' is reserved (3:0)
You may need an appropriate loader to handle this file typ
Folder Structure:
config //webpack configs
public
git submodule
src
I am trying to include the file using a relative path like '../../submodule/etc/etc.
Webpack config file (had to remove some comments and imports to hit word limit)
'use strict';
//const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false';
const useTypeScript = fs.existsSync(paths.appTsConfig);
// style files regexes
const cssRegex = /\.css$/;
const cssModuleRegex = /\.module\.css$/;
const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;
module.exports = function(webpackEnv) {
const isEnvDevelopment = webpackEnv === 'development';
const isEnvProduction = webpackEnv === 'production';
const publicPath = isEnvProduction
? paths.servedPath
: isEnvDevelopment && '/';
const shouldUseRelativeAssetPaths = publicPath === './';
const publicUrl = isEnvProduction
? publicPath.slice(0, -1)
: isEnvDevelopment && '';
// Get environment variables to inject into our app.
const env = getClientEnvironment(publicUrl);
// common function to get style loaders
const getStyleLoaders = (cssOptions, preProcessor) => {
const loaders = [
isEnvDevelopment && require.resolve('style-loader'),
isEnvProduction && {
loader: MiniCssExtractPlugin.loader,
options: Object.assign(
{},
shouldUseRelativeAssetPaths ? { publicPath: '../../' } : undefined
),
},
{
loader: require.resolve('css-loader'),
options: cssOptions,
},
{
loader: require.resolve('postcss-loader'),
options: {
// Necessary for external CSS imports to work
// https://github.com/facebook/create-react-app/issues/2677
ident: 'postcss',
plugins: () => [
require('postcss-flexbugs-fixes'),
require('postcss-preset-env')({
autoprefixer: {
flexbox: 'no-2009',
},
stage: 3,
}),
],
sourceMap: isEnvProduction && shouldUseSourceMap,
},
},
].filter(Boolean);
if (preProcessor) {
loaders.push({
loader: require.resolve(preProcessor),
options: {
sourceMap: isEnvProduction && shouldUseSourceMap,
},
});
}
return loaders;
};
return {
mode: isEnvProduction ? 'production' : isEnvDevelopment && 'development',
// Stop compilation early in production
bail: isEnvProduction,
devtool: isEnvProduction
? shouldUseSourceMap
? 'source-map'
: false
: isEnvDevelopment && 'cheap-module-source-map',
// These are the "entry points" to our application.
// This means they will be the "root" imports that are included in JS bundle.
entry: [
isEnvDevelopment &&
require.resolve('react-dev-utils/webpackHotDevClient'),
// Finally, this is your app's code:
paths.appIndexJs,
// We include the app code last so that if there is a runtime error during
// initialization, it doesn't blow up the WebpackDevServer client, and
// changing JS code would still trigger a refresh.
].filter(Boolean),
output: {
// The build folder.
path: isEnvProduction ? paths.appBuild : undefined,
// Add /* filename */ comments to generated require()s in the output.
pathinfo: isEnvDevelopment,
// There will be one main bundle, and one file per asynchronous chunk.
// In development, it does not produce real files.
filename: isEnvProduction
? 'static/js/[name].[chunkhash:8].js'
: isEnvDevelopment && 'static/js/bundle.js',
// There are also additional JS chunk files if you use code splitting.
chunkFilename: isEnvProduction
? 'static/js/[name].[chunkhash:8].chunk.js'
: isEnvDevelopment && 'static/js/[name].chunk.js',
// We inferred the "public path" (such as / or /my-project) from homepage.
// We use "/" in development.
publicPath: publicPath,
// Point sourcemap entries to original disk location (format as URL on Windows)
devtoolModuleFilenameTemplate: isEnvProduction
? info =>
path
.relative(paths.appSrc, info.absoluteResourcePath)
.replace(/\\/g, '/')
: isEnvDevelopment &&
(info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')),
},
optimization: {
minimize: isEnvProduction,
minimizer: [
// This is only used in production mode
new TerserPlugin({
terserOptions: {
parse: {
ecma: 8,
},
compress: {
ecma: 5,
warnings: false,
comparisons: false,
inline: 2,
},
mangle: {
safari10: true,
},
output: {
ecma: 5,
comments: false,
// Turned on because emoji and regex is not minified properly using default
// https://github.com/facebook/create-react-app/issues/2488
ascii_only: true,
},
},
// Use multi-process parallel running to improve the build speed
// Default number of concurrent runs: os.cpus().length - 1
parallel: true,
// Enable file caching
cache: true,
sourceMap: shouldUseSourceMap,
}),
// This is only used in production mode
new OptimizeCSSAssetsPlugin({
cssProcessorOptions: {
parser: safePostCssParser,
map: shouldUseSourceMap
? {
// `inline: false` forces the sourcemap to be output into a
// separate file
inline: false,
// `annotation: true` appends the sourceMappingURL to the end of
// the css file, helping the browser find the sourcemap
annotation: true,
}
: false,
},
}),
],
// Automatically split vendor and commons
// https://twitter.com/wSokra/status/969633336732905474
// https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
splitChunks: {
chunks: 'all',
name: false,
},
// Keep the runtime chunk separated to enable long term caching
// https://twitter.com/wSokra/status/969679223278505985
runtimeChunk: true,
},
resolve: {
modules: ['node_modules'].concat(
// It is guaranteed to exist because we tweak it in `env.js`
process.env.NODE_PATH.split(path.delimiter).filter(Boolean),
),
extensions: paths.moduleFileExtensions
.map(ext => `.${ext}`)
.filter(ext => useTypeScript || !ext.includes('ts')),
alias: {
// Support React Native Web
// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
'react-native': 'react-native-web',
'#': path.join(__dirname, '../src')
},
plugins: [
// Adds support for installing with Plug'n'Play, leading to faster installs and adding
// guards against forgotten dependencies and such.
PnpWebpackPlugin,
// Prevents users from importing files from outside of src/ (or node_modules/).
// This often causes confusion because we only process files within src/ with babel.
// To fix this, we prevent you from importing files out of src/ -- if you'd like to,
// please link the files into your node_modules/ and let module-resolution kick in.
// Make sure your source files are compiled, as they will not be processed in any way.
//new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
],
},
resolveLoader: {
plugins: [
// Also related to Plug'n'Play, but this time it tells Webpack to load its loaders
// from the current package.
PnpWebpackPlugin.moduleLoader(module),
],
},
module: {
strictExportPresence: true,
rules: [
// Disable require.ensure as it's not a standard language feature.
{ parser: { requireEnsure: false } },
// First, run the linter.
// It's important to do this before Babel processes the JS.
{
test: /\.(js|mjs|jsx)$/,
enforce: 'pre',
use: [
{
options: {
formatter: require.resolve('react-dev-utils/eslintFormatter'),
eslintPath: require.resolve('eslint'),
},
loader: require.resolve('eslint-loader'),
},
],
include: paths.appSrc,
},
{
// "oneOf" will traverse all following loaders until one will
// match the requirements. When no loader matches it will fall
// back to the "file" loader at the end of the loader list.
oneOf: [
// "url" loader works like "file" loader except that it embeds assets
// smaller than specified limit in bytes as data URLs to avoid requests.
// A missing `test` is equivalent to a match.
{
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
loader: require.resolve('url-loader'),
options: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]',
},
},
// Process application JS with Babel.
// The preset includes JSX, Flow, TypeScript, and some ESnext features.
{
test: /\.(js|mjs|jsx|ts|tsx)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
customize: require.resolve(
'babel-preset-react-app/webpack-overrides'
),
plugins: [
[
require.resolve('babel-plugin-named-asset-import'),
{
loaderMap: {
svg: {
ReactComponent:
'#svgr/webpack?-prettier,-svgo![path]',
},
},
},
],
],
// This is a feature of `babel-loader` for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/babel-loader/
// directory for faster rebuilds.
cacheDirectory: true,
cacheCompression: isEnvProduction,
compact: isEnvProduction,
},
},
// Process any JS outside of the app with Babel.
// Unlike the application JS, we only compile the standard ES features.
{
test: /\.(js|mjs)$/,
exclude: /#babel(?:\/|\\{1,2})runtime/,
loader: require.resolve('babel-loader'),
options: {
babelrc: false,
configFile: false,
compact: false,
presets: [
[
require.resolve('babel-preset-react-app/dependencies'),
{ helpers: true },
],
],
cacheDirectory: true,
cacheCompression: isEnvProduction,
// If an error happens in a package, it's possible to be
// because it was compiled. Thus, we don't want the browser
// debugger to show the original code. Instead, the code
// being evaluated would be much more helpful.
sourceMaps: false,
},
},
// "postcss" loader applies autoprefixer to our CSS.
// "css" loader resolves paths in CSS and adds assets as dependencies.
// "style" loader turns CSS into JS modules that inject <style> tags.
// In production, we use MiniCSSExtractPlugin to extract that CSS
// to a file, but in development "style" loader enables hot editing
// of CSS.
// By default we support CSS Modules with the extension .module.css
{
test: cssRegex,
exclude: cssModuleRegex,
use: getStyleLoaders({
importLoaders: 1,
sourceMap: isEnvProduction && shouldUseSourceMap,
}),
// Don't consider CSS imports dead code even if the
// containing package claims to have no side effects.
// Remove this when webpack adds a warning or an error for this.
// See https://github.com/webpack/webpack/issues/6571
sideEffects: true,
},
// Adds support for CSS Modules (https://github.com/css-modules/css-modules)
// using the extension .module.css
{
test: cssModuleRegex,
use: getStyleLoaders({
importLoaders: 1,
sourceMap: isEnvProduction && shouldUseSourceMap,
modules: true,
getLocalIdent: getCSSModuleLocalIdent,
}),
},
// Opt-in support for SASS (using .scss or .sass extensions).
// By default we support SASS Modules with the
// extensions .module.scss or .module.sass
{
test: sassRegex,
exclude: sassModuleRegex,
use: getStyleLoaders(
{
importLoaders: 2,
sourceMap: isEnvProduction && shouldUseSourceMap,
},
'sass-loader'
),
// Don't consider CSS imports dead code even if the
// containing package claims to have no side effects.
// Remove this when webpack adds a warning or an error for this.
// See https://github.com/webpack/webpack/issues/6571
sideEffects: true,
},
// Adds support for CSS Modules, but using SASS
// using the extension .module.scss or .module.sass
{
test: sassModuleRegex,
use: getStyleLoaders(
{
importLoaders: 2,
sourceMap: isEnvProduction && shouldUseSourceMap,
modules: true,
getLocalIdent: getCSSModuleLocalIdent,
},
'sass-loader'
),
},
// "file" loader makes sure those assets get served by WebpackDevServer.
// When you `import` an asset, you get its (virtual) filename.
// In production, they would get copied to the `build` folder.
// This loader doesn't use a "test" so it will catch all modules
// that fall through the other loaders.
{
loader: require.resolve('file-loader'),
// Exclude `js` files to keep "css" loader working as it injects
// its runtime that would otherwise be processed through "file" loader.
// Also exclude `html` and `json` extensions so they get processed
// by webpacks internal loaders.
exclude: [/\.(js|mjs|jsx|ts|tsx)$/, /\.html$/, /\.json$/],
options: {
name: 'static/media/[name].[hash:8].[ext]',
},
},
// ** STOP ** Are you adding a new loader?
// Make sure to add the new loader(s) before the "file" loader.
],
},
],
},
plugins: [
// Generates an `index.html` file with the <script> injected.
new HtmlWebpackPlugin(
Object.assign(
{},
{
inject: true,
template: paths.appHtml,
},
isEnvProduction
? {
minify: {
removeComments: true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
}
: undefined
)
),
// Inlines the webpack runtime script. This script is too small to warrant
// a network request.
isEnvProduction &&
shouldInlineRuntimeChunk &&
new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/runtime~.+[.]js/]),
// Makes some environment variables available in index.html.
// The public URL is available as %PUBLIC_URL% in index.html, e.g.:
// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
// In production, it will be an empty string unless you specify "homepage"
// in `package.json`, in which case it will be the pathname of that URL.
// In development, this will be an empty string.
new InterpolateHtmlPlugin(HtmlWebpackPlugin, env.raw),
// This gives some necessary context to module not found errors, such as
// the requesting resource.
new ModuleNotFoundPlugin(paths.appPath),
// Makes some environment variables available to the JS code, for example:
// if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
// It is absolutely essential that NODE_ENV is set to production
// during a production build.
// Otherwise React will be compiled in the very slow development mode.
new webpack.DefinePlugin(env.stringified),
// This is necessary to emit hot updates (currently CSS only):
isEnvDevelopment && new webpack.HotModuleReplacementPlugin(),
// Watcher doesn't work well if you mistype casing in a path so we use
// a plugin that prints an error when you attempt to do this.
// See https://github.com/facebook/create-react-app/issues/240
isEnvDevelopment && new CaseSensitivePathsPlugin(),
// If you require a missing module and then `npm install` it, you still have
// to restart the development server for Webpack to discover it. This plugin
// makes the discovery automatic so you don't have to restart.
// See https://github.com/facebook/create-react-app/issues/186
isEnvDevelopment &&
new WatchMissingNodeModulesPlugin(paths.appNodeModules),
isEnvProduction &&
new MiniCssExtractPlugin({
// Options similar to the same options in webpackOptions.output
// both options are optional
filename: 'static/css/[name].[contenthash:8].css',
chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
}),
// Generate a manifest file which contains a mapping of all asset filenames
// to their corresponding output file so that tools can pick it up without
// having to parse `index.html`.
new ManifestPlugin({
fileName: 'asset-manifest.json',
publicPath: publicPath,
}),
// Moment.js is an extremely popular library that bundles large locale files
// by default due to how Webpack interprets its code. This is a practical
// solution that requires the user to opt into importing specific locales.
// https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
// You can remove this if you don't use Moment.js:
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
// Generate a service worker script that will precache, and keep up to date,
// the HTML & assets that are part of the Webpack build.
isEnvProduction &&
new WorkboxWebpackPlugin.GenerateSW({
clientsClaim: true,
exclude: [/\.map$/, /asset-manifest\.json$/],
importWorkboxFrom: 'cdn',
navigateFallback: publicUrl + '/index.html',
navigateFallbackBlacklist: [
// Exclude URLs starting with /_, as they're likely an API call
new RegExp('^/_'),
// Exclude URLs containing a dot, as they're likely a resource in
// public/ and not a SPA route
new RegExp('/[^/]+\\.[^/]+$'),
],
}),
// TypeScript type checking
useTypeScript &&
new ForkTsCheckerWebpackPlugin({
typescript: resolve.sync('typescript', {
basedir: paths.appNodeModules,
}),
async: false,
checkSyntacticErrors: true,
tsconfig: paths.appTsConfig,
compilerOptions: {
module: 'esnext',
moduleResolution: 'node',
resolveJsonModule: true,
isolatedModules: true,
noEmit: true,
jsx: 'preserve',
},
reportFiles: [
'**',
'!**/*.json',
'!**/__tests__/**',
'!**/?(*.)(spec|test).*',
'!**/src/setupProxy.*',
'!**/src/setupTests.*',
],
watch: paths.appSrc,
silent: true,
formatter: typescriptFormatter,
}),
].filter(Boolean),
// Some libraries import Node modules but don't use them in the browser.
// Tell Webpack to provide empty mocks for them so importing them works.
node: {
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty',
},
// Turn off performance processing because we utilize
// our own hints via the FileSizeReporter
performance: false,
};
};
paths.js
'use strict';
const path = require('path');
const fs = require('fs');
const url = require('url');
// Make sure any symlinks in the project folder are resolved:
// https://github.com/facebook/create-react-app/issues/637
const appDirectory = fs.realpathSync(process.cwd());
const resolveApp = relativePath => path.resolve(appDirectory, relativePath);
const envPublicUrl = process.env.PUBLIC_URL;
function ensureSlash(inputPath, needsSlash) {
const hasSlash = inputPath.endsWith('/');
if (hasSlash && !needsSlash) {
return inputPath.substr(0, inputPath.length - 1);
} else if (!hasSlash && needsSlash) {
return `${inputPath}/`;
} else {
return inputPath;
}
}
const getPublicUrl = appPackageJson =>
envPublicUrl || require(appPackageJson).homepage;
// We use `PUBLIC_URL` environment variable or "homepage" field to infer
// "public path" at which the app is served.
// Webpack needs to know it to put the right <script> hrefs into HTML even in
// single-page apps that may serve index.html for nested URLs like /todos/42.
// We can't use a refresolative path in HTML because we don't want to load something
// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
function getServedPath(appPackageJson) {
const publicUrl = getPublicUrl(appPackageJson);
const servedUrl =
envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/');
return ensureSlash(servedUrl, true);
}
const moduleFileExtensions = [
'web.mjs',
'mjs',
'web.js',
'js',
'web.ts',
'ts',
'web.tsx',
'tsx',
'json',
'web.jsx',
'jsx',
];
// Resolve file paths in the same order as webpack
const resolveModule = (resolveFn, filePath) => {
const extension = moduleFileExtensions.find(extension =>
fs.existsSync(resolveFn(`${filePath}.${extension}`))
);
if (extension) {
return resolveFn(`${filePath}.${extension}`);
}
return resolveFn(`${filePath}.js`);
};
// config after eject: we're in ./config/
module.exports = {
dotenv: resolveApp('.env'),
appPath: resolveApp('.'),
appBuild: resolveApp('build'),
appPublic: resolveApp('public'),
appHtml: resolveApp('public/index.html'),
appIndexJs: resolveModule(resolveApp, 'src/index'),
appPackageJson: resolveApp('package.json'),
appSrc: resolveApp('src'),
appTsConfig: resolveApp('tsconfig.json'),
yarnLockFile: resolveApp('yarn.lock'),
testsSetup: resolveModule(resolveApp, 'src/setupTests'),
proxySetup: resolveApp('src/setupProxy.js'),
appNodeModules: resolveApp('node_modules'),
publicUrl: getPublicUrl(resolveApp('package.json')),
servedPath: getServedPath(resolveApp('package.json')),
};
module.exports.moduleFileExtensions = moduleFileExtensions;
I am attempting to migrate to Webpack 2 from 1 and am receiving quite a few errors. I managed to get rid of some errors but am still receiving the following:
$ node scripts/start.js
(node:42015) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): WebpackOptionsValidationError: Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
configuration.resolve has an unknown property 'fallback'. These properties are valid:
object { alias?, aliasFields?, cachePredicate?, descriptionFiles?, enforceExtension?, enforceModuleExtension?, extensions?, fileSystem?, mainFields?, mainFiles?, moduleExtensions?, modules?, plugins?, resolver?, symlinks?, unsafeCache?, useSyncFileSystemCalls? }
(node:42015)
DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
My webpack config is below
var autoprefixer = require('autoprefixer');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var ManifestPlugin = require('webpack-manifest-plugin');
var InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
var url = require('url');
var paths = require('./paths');
var getClientEnvironment = require('./env');
function ensureSlash(path, needsSlash) {
var hasSlash = path.endsWith('/');
if (hasSlash && !needsSlash) {
return path.substr(path, path.length - 1);
} else if (!hasSlash && needsSlash) {
return path + '/';
} else {
return path;
}
}
// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
var homepagePath = require(paths.appPackageJson).homepage;
var homepagePathname = homepagePath ? url.parse(homepagePath).pathname :
%PUBLIC_PATH%xyz.
var publicUrl = ensureSlash(homepagePathname, false);
var env = getClientEnvironment(publicUrl);
// Assert this just to be safe.
// Development builds of React are slow and not intended for production.
if (env['process.env'].NODE_ENV !== '"production"') {
throw new Error('Production builds must have NODE_ENV=production.');
}
module.exports = {
bail: true,
entry: [
require.resolve('./polyfills'),
paths.appIndexJs
],
output: {
// The build folder.
path: paths.appBuild,
// Generated JS file names (with nested folders).
// There will be one main bundle, and one file per asynchronous chunk.
// We don't currently advertise code splitting but Webpack supports it.
filename: 'assets/static/js/[name].js',
chunkFilename: 'assets/static/js/[name].chunk.js',
// We inferred the "public path" (such as / or /my-project) from homepage.
publicPath: publicPath
},
resolve: {
extensions: ['.js', '.json', '.jsx'],
alias: {
// Support React Native Web
// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
'react-native': 'react-native-web'
}
},
module: {
rules: [
{
test: /\.(js|jsx)$/,
loader: 'eslint',
include: paths.appSrc,
enforce: 'pre'
},
{
exclude: [
/\.html$/,
/\.(js|jsx)$/,
/\.css$/,
/\.json$/,
/\.svg$/
],
loader: 'url',
options: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]'
}
},
// Process JS with Babel.
{
test: /\.(js|jsx)$/,
include: paths.appSrc,
loader: 'babel',
},
{
test: /\.css$/,
loader: ExtractTextPlugin.extract('style', 'css?importLoaders=1!postcss')
// Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
},
// JSON is not enabled by default in Webpack but both Node and Browserify
// allow it implicitly so we also enable it.
{
test: /\.json$/,
loader: 'json'
},
// "file" loader for svg
{
test: /\.svg$/,
loader: 'file',
options: {
name: 'static/media/[name].[hash:8].[ext]'
}
}
]
},
plugins: [
// Makes the public URL available as %PUBLIC_URL% in index.html, e.g.:
// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
// In production, it will be an empty string unless you specify "homepage"
// in `package.json`, in which case it will be the pathname of that URL.
new InterpolateHtmlPlugin({
PUBLIC_URL: publicUrl
}),
// Generates an `index.html` file with the <script> injected.
new HtmlWebpackPlugin({
inject: true,
template: paths.appHtml,
minify: {
removeComments: true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true
}
}),
// Makes some environment variables available to the JS code, for example:
// if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
// It is absolutely essential that NODE_ENV was set to production here.
// Otherwise React will be compiled in the very slow development mode.
new webpack.DefinePlugin(env),
// This helps ensure the builds are consistent if source hasn't changed:
new webpack.optimize.OccurrenceOrderPlugin(),
// Try to dedupe duplicated modules, if any:
new webpack.optimize.DedupePlugin(),
// Minify the code.
new webpack.optimize.UglifyJsPlugin({
compress: {
screw_ie8: true, // React doesn't support IE8
warnings: false
},
mangle: {
screw_ie8: true
},
output: {
comments: false,
screw_ie8: true
}
}),
// Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
new ExtractTextPlugin('assets/static/css/[name].css'),
// Generate a manifest file which contains a mapping of all asset filenames
// to their corresponding output file so that tools can pick it up without
// having to parse `index.html`.
new ManifestPlugin({
fileName: 'asset-manifest.json'
})
],
// Some libraries import Node modules but don't use them in the browser.
// Tell Webpack to provide empty mocks for them so importing them works.
node: {
fs: 'empty',
net: 'empty',
tls: 'empty'
}
};
And my start.js is here https://pastebin.com/ENRYKUgL
Any help would be greatly appreciated.
fallback is an option of ExtractTextPlugin, perhaps try to define with the new use: { //.. } notation rather than query string notation. This may not be perfect but should get you started...
{
test: /\.css$/,
loader: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: [
{ loader: 'css-loader', options: {importLoaders: 1}},
{ loader: 'postcss-loader' }
]
})
}
On a side note, you shouldn't need OccurrenceOrderPlugin or DedupePlugin in Webpack 2 as they are included by default
I'm trying to develop a react isomorphic app, and i've recently came up with the webpack-isomorphic-tools npm package.
I've tried to follow the documentation but unfortunately the images and style files doesn't get recognized, and not added to the webpack-assets.json file.
Up until now I've used this method:
if(process.env.BROWSER){
include('./style.scss');
}
But I understood webpack-isomorphic-tools is more beneficial.
for scss and other style files this is the error i get when running the server:
[webpack-isomorphic-tools] [debug] requiring ./shared/Root.scss
[webpack-isomorphic-tools] [error] asset not found: ./shared/Root.scss
for image files no errors are shown during the build, since no images are detected on the build. here is the webpack-assets.js:
{
"javascript": {
"main": "/build/bundle.js"
},
"styles": {},
"assets": {}
}
Relevant code:
webpack-isomorphic-tools-config.js:
var webpack_isomorphic_tools_plugin = require('webpack-isomorphic-tools/plugin');
module.exports =
{
debug: true,
webpack_assets_file_path : 'public/build/webpack-assets.json',
webpack_stats_file_path : 'public/build/webpack-stats.json',
assets:
{
images:
{
extensions: ['png', 'jpg', 'gif', 'ico', 'svg']
},
fonts:
{
extensions: ['woff', 'woff2', 'eot', 'ttf']
},
styles:
{
extensions: ['scss', 'less', 'css'],
filter(module, regular_expression, options, log)
{
if (options.development)
{
// In development mode there's Webpack "style-loader",
// which outputs `module`s with `module.name == asset_path`,
// but those `module`s do not contain CSS text.
//
// The `module`s containing CSS text are
// the ones loaded with Webpack "css-loader".
// (which have kinda weird `module.name`)
//
// Therefore using a non-default `filter` function here.
//
return webpack_isomorphic_tools_plugin.style_loader_filter(module, regular_expression, options, log)
}
// In production mode there will be no CSS text at all
// because all styles will be extracted by Webpack Extract Text Plugin
// into a .css file (as per Webpack configuration).
//
// Therefore in production mode `filter` function always returns non-`true`.
},
// How to correctly transform kinda weird `module.name`
// of the `module` created by Webpack "css-loader"
// into the correct asset path:
path: webpack_isomorphic_tools_plugin.style_loader_path_extractor,
// How to extract these Webpack `module`s' javascript `source` code.
// Basically takes `module.source` and modifies its `module.exports` a little.
parser: webpack_isomorphic_tools_plugin.css_loader_parser
}
}
}
index.js (looks a lot like the one in the documentation):
'use strict';
var path = require('path');
require('babel-register');
require('babel-polyfill');
require('app-module-path').addPath(path.join(__dirname,'shared'));
global._development_ = false
if (process.env.NODE_ENV !== 'production'){
global._development_ = true;
}
var Webpack_isomorphic_tools = require('webpack-isomorphic-tools');
// this must be equal to your Webpack configuration "context" parameter
var project_base_path = path.resolve(__dirname);
// this global variable will be used later in express middleware
global.webpack_isomorphic_tools = new Webpack_isomorphic_tools(require('./webpack-isomorphic-tools-config'))
// enter development mode if needed
// (you may also prefer to use a Webpack DefinePlugin variable)
.development(!(process.env.NODE_ENV === 'production'))
// initializes a server-side instance of webpack-isomorphic-tools
// (the first parameter is the base path for your project
// and is equal to the "context" parameter of you Webpack configuration)
// (if you prefer Promises over callbacks
// you can omit the callback parameter
// and then it will return a Promise instead)
.server(project_base_path, function()
{
// webpack-isomorphic-tools is all set now.
// here goes all your web application code:
// (it must reside in a separate *.js file
// in order for the whole thing to work)
require('./server/server')
});
webpack.dev.js (webpack-dev-server config):
var path = require('path');
var webpack = require('webpack');
var Webpack_isomorphic_tools_plugin = require('webpack-isomorphic-tools/plugin')
var webpack_isomorphic_tools_plugin =
// webpack-isomorphic-tools settings reside in a separate .js file
// (because they will be used in the web server code too).
new Webpack_isomorphic_tools_plugin(require('./webpack-isomorphic-tools-config'))
// also enter development mode since it's a development webpack configuration
// (see below for explanation)
.development();
module.exports = {
context: __dirname,
entry: ['webpack-dev-server/client?http://127.0.0.1:8080/',
'webpack/hot/only-dev-server',
'./client/index.jsx'],
resolve: {
modulesDirectories: ['node_modules', 'shared'],
extensions: ['', '.js', '.jsx']
},
output: {
path: path.join(__dirname, 'public', 'build'),
filename: 'bundle.js',
publicPath: "/build/"
},
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loaders: ['react-hot', 'babel']
},
{
test: /\.css$/,
loader: "style-loader!css-loader!autoprefixer-loader"
},
{
test: /\.less$/,
loader: "style-loader!css-loader!autoprefixer-loader!less-loader"
},
{
test: /\.scss$/,
loader: "style-loader!css-loader!autoprefixer-loader!sass-loader"
},
{
test: webpack_isomorphic_tools_plugin.regular_expressions['images'],
loader: "url-loader?limit=10240"
},
{
test: webpack_isomorphic_tools_plugin.regular_expression['fonts'],
loader: "url-loader?limit=10240"
}
]
},
plugins: [
new webpack.DefinePlugin({
"process.env": {
BROWSER: JSON.stringify(true),
NODE_ENV: JSON.stringify( process.env.NODE_ENV || 'development' )
}
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin(),
webpack_isomorphic_tools_plugin
],
devtool: 'inline-source-map',
devServer: {
hot: true,
proxy: {
'*': 'http://127.0.0.1:' + (process.env.PORT || 3000)
},
host: '127.0.0.1'
}
};
webpack.config.js:
var path = require('path');
var webpack = require('webpack');
var ExtractTextPlugin = require("extract-text-webpack-plugin");
var Webpack_isomorphic_tools_plugin = require('webpack-isomorphic-tools/plugin')
var webpack_isomorphic_tools_plugin =
// webpack-isomorphic-tools settings reside in a separate .js file
// (because they will be used in the web server code too).
new Webpack_isomorphic_tools_plugin(require('./webpack-isomorphic-tools-config'));
module.exports = {
context: __dirname,
entry: ['./client/index.jsx'],
resolve: {
modulesDirectories: ['node_modules', 'shared'],
extensions: ['', '.js', '.jsx']
},
output: {
path: path.join(__dirname, 'public', 'build'),
filename: 'bundle.js',
publicPath: "/build"
},
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loaders: ['react-hot', 'babel']
},
{
test: /\.css$/,
loader: ExtractTextPlugin.extract("style-loader", "css-loader!autoprefixer-loader")
},
{
test: /\.less$/,
loader: ExtractTextPlugin.extract("style-loader", "css-loader!autoprefixer-loader!less-loader")
},
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract("style-loader", "css-loader!autoprefixer-loader!sass-loader")
},
{
test: /\.gif$/, loader: "url-loader?limit=10000&mimetype=image/gif"
},
{
test: /\.jpg$/, loader: "url-loader?limit=10000&mimetype=image/jpg"
},
{
test: /\.png$/, loader: "url-loader?limit=10000&mimetype=image/png"
},
{
test: /\.svg/, loader: "url-loader?limit=26000&mimetype=image/svg+xml"
},
{
test: /\.(woff|woff2|ttf|eot)/, loader: "url-loader?limit=1&name=/[hash].[ext]"
}
]
},
plugins: [
new webpack.DefinePlugin({
"process.env": {
BROWSER: JSON.stringify(true),
NODE_ENV: JSON.stringify( process.env.NODE_ENV || 'development' )
}
}),
new ExtractTextPlugin("bundle.css")
]
};
If more code is required, I'd be happy to give it, thanks!