How can I bundle my NPM package in a way that I can have different import paths for different parts of the package? I have found webpack approaches, but I am using Vite and TS.
My package looks like this:
- src
- atoms
- molecules
- organism
- index.ts (currently simply imports and exports everything)
Now I can use this currently like this
import { Button } from '#mypackage/library'
How can I do it, so I get this outcome:
import { Button } from '#mypackage/library/atom'
Here is the relevant part of my package.json
{
"entry": "src/index.ts",
"main": "dist/index.cjs.js",
"module": "dist/index.es.js",
"types": "dist/index.d.ts",
"files": [
"dist",
"src"
],
"exports": {
".": {
"import": "./dist/index.es.js",
"require": "./dist/index.cjs.js",
"types": "./dist/index.d.ts"
},
"./package.json": "./package.json",
"./atoms": "./src/atoms/index.ts",
"./molecules": "./src/molecules/index.ts",
"./organisms": "./src/organisms/index.ts",
"./theme": "./src/theme/index.ts"
},
}
Here is my vite.config.ts
export default defineConfig({
build: {
lib: {
entry: path.resolve(__dirname, 'src/index.ts'),
formats: ['es', 'cjs'],
name: '#workdigtital/component-library-react',
fileName: (format) => `index.${format}.js`
},
rollupOptions: {
external: ['react', 'react-dom'],
output: {
globals: {
react: 'React',
'react-dom': 'ReactDOM'
},
exports: 'named'
}
}
},
plugins: [react(), dts({ insertTypesEntry: true })],
resolve: {
alias: {
'#': path.resolve(__dirname, './src')
}
}
});
If I currently try an import like this, inside another project (Laravel+React), in which installed the library.
import { ThemeProvider } from '#workdigital/component-library-react/theme';
I get the following run time error (But no Typescript errors, even IntelliSense is working):
Failed to load url /resources/js/theme/ThemeProvider (resolved id: /resources/js/theme/ThemeProvider). Does the file exist?
My resulting Dist folder looks like this:
You can't have TypeScript exports, this simply won't work. An npm package should have only JS exports.
If you want to be able to selectively import different parts of your package, you must transpile them to different files.
rollup can do it, but it is lots of work, as you will have to set up a separate target for each exported file. Normally you use rollup to create a single bundle, this what this tool is made for.
tsc with a tsconfig.json will be a much better choice in your case. It does this by default, you only need to specify the output directory and it will produce a separate file for each source.
There is an excellent guide on the TypeScript site about packaging TypeScript libraries, you should probably start there.
I am working on an Obsidian plugin that requires bundling using rollup.js. This plugin needs to import inrupt solid libraries that, when imported, are causing the following error:
Error: crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported
at rng (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:16740:10)
at v4 (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:17186:53)
at new Session (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:23526:88)
at Repro.<anonymous> (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:23669:17)
at step (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:160:15)
at Object.next (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:111:11)
at /Users/candide/work/sekund/solid-build-issues/main_rollup.js:83:65
at new Promise (<anonymous>)
at __awaiter (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:65:9)
at Repro.login (/Users/candide/work/sekund/solid-build-issues/main_rollup.js:23664:10)
When debugging the code, it turns out that the crypto constant is not defined. However, at the start of the generated bundle, I can see:
var crypto_1 = require("crypto");
So it looks like my problem basically boils down to rollup redefining global variables when it should not.
Indeed, using the typescript compiler (tsc) on the same source file outputs a perfectly working program.
Here's my rollup config:
import commonjs from "#rollup/plugin-commonjs";
import json from "#rollup/plugin-json";
import { nodeResolve } from "#rollup/plugin-node-resolve";
import typescript from "#rollup/plugin-typescript";
const banner = `/*
THIS IS A GENERATED/BUNDLED FILE BY ROLLUP
if you want to view the source visit the plugins github repository
*/
`;
export default {
input: "src/main.ts",
inlineDynamicImports: true,
output: [
{
file: "main.js",
sourcemap: "inline",
format: "cjs",
exports: "default",
banner,
},
],
external: ["obsidian", "fs", "os", "path"],
plugins: [json(), nodeResolve({ preferBuiltins: true }), commonjs(), typescript({ sourceMap: true })],
};
I created a repro repo at https://github.com/ckemmler/solid-build-issues
man this wrecked my brain for a bit, i managed to find a solution but i don't understand it 100%
please see the solution suggested in this comment https://github.com/uuidjs/uuid/issues/544#issuecomment-740394448
resolved the problem for me
I am having a bit of trouble reconciling the path of a dynamic import for i18n locales. Here's the relevant code -
function getLoader(
lang: SupportedLanguage,
ns: SupportedNamespace
): NamespaceLoader | undefined {
const matrixToCheck = UNSUPPORTED_MATRIX[ns];
const isSupported = matrixToCheck && matrixToCheck.indexOf(lang) === -1;
if (isSupported) {
const path = `./locales/${lang}/${ns}.json`;
const name = `${lang}_${ns}`;
const named = {
[name]: () => import(`${path}`),
};
return named[name];
}
}
...
// eventual output
const SUPPORTED_LANGUAGES = {en: {namespace1: () => import('./locales/en/namespace1.json')}
My goal is manage all of the relevant translations in a single npm package, handle all of the dynamic import set-up at build time, and then consumers can invoke the getter (getTranslation in this case) in their respectives apps for the language and namespace of their choice to get the payload at runtime.
Based on this GH thread, I wanted to reconcile the locale dist path via the package.json
...
"exports": {
".": "./dist/src/main.js",
"./": "./dist/"
},
...
e.g. when I publish the package, based on that exports config, the consumer would know know how to reconcile the path, either relative or package-name-prefix when the getter is invoked
const fn = () => import('./locales/fr/myNamespace.json') /// doesn't work
const anotherFn = () => import('#examplePackageName/locales/fr/myNamespace.json') /// doesn't work
Since everything is dynamic, I am using the CopyWebpackPlugin to include the locales in the dist folder.
This works as expected locally, but when I create the dist, I get the error Error: Module not found ./relative/path/to/the/json/I/want.json.
My question:
What am I missing? Is there a simple way to expose these translations so that other apps can include them in their bundles via an npm-installed package?
Here's my Webpack config, happy to provide other info as needed
const path = require("path");
const CopyPlugin = require("copy-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const getPlugins = () => {
return [
new CleanWebpackPlugin(),
new CopyPlugin({
patterns: [{ from: "locales", to: "locales" }],
}),
];
};
module.exports = {
mode: "production",
entry: {
main: "./src/main.ts",
},
output: {
path: path.join(__dirname, "dist"),
filename: "src/[name].js",
chunkFilename: "chunk.[name].js",
libraryTarget: "commonjs2",
},
resolve: {
extensions: [".json", ".ts", ".js"],
alias: {
"#locales": path.resolve(__dirname, "locales/*"),
},
},
plugins: getPlugins(),
module: {
rules: [
{
test: /\.ts$/,
exclude: [/\.test\.ts$/],
include: path.join(__dirname, "src"),
loader: "ts-loader",
},
],
},
};
Exports directive prescribes to define all files allowed for import explicitly (documentation). It allows developer to hide internal package file structure. What's not exported by this directive is only available to import inside the package and not outside of it. It's made to simplify maintenance. It allows developers to rename files or change file structure without fear of breaking dependent packages and applications.
So if you want to make internal files visible for import, you should export them with exports directive explicitly, like this:
{
"exports": {
".": "./dist/esm/src/main.js",
"./dist/shared/locale/fr_fr.json": "./dist/shared/locale/fr_fr.json"
}
}
I'm not sure wether Webpack handling this case, because it's an experimental feature yet. But this is how Node.js works now.
Why it is so
Changing your app file structure is a major change in semver terms, so you need to bump a version everytime you rename or delete files. To avoid it you can specify which files are part of public interface of the package.
below code is my webpack.config.dev.js.
I got the webpack config after running npm run eject as you might already know.
I installed node-sass and sass-loader packages.
I included the webpack build configuration.
When I run npm start I get invalid schema error. If I try to fix this I get
module export error for bootstrap 4 module that I had already included in the project.
webpack.config.dev.js
const path = require('path');
const webpack = require('webpack');
const PnpWebpackPlugin = require('pnp-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const getCSSModuleLocalIdent = require('react-dev-utils/getCSSModuleLocalIdent');
const ManifestPlugin = require('webpack-manifest-plugin');
const getCacheIdentifier = require('react-dev-utils/getCacheIdentifier');
const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
const getClientEnvironment = require('./env');
const paths = require('./paths');
// Webpack uses `publicPath` to determine where the app is being served from.
// In development, we always serve from the root. This makes config easier.
const publicPath = '/';
// `publicUrl` is just like `publicPath`, but we will provide it to our app
// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
// Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
const publicUrl = '';
// Get environment variables to inject into our app.
const env = getClientEnvironment(publicUrl);
// style files regexes
const cssRegex = /\.css$/;
const cssModuleRegex = /\.module\.css$/;
const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;
// common function to get style loaders
const getStyleLoaders = (cssOptions, preProcessor) => {
const loaders = [
require.resolve('style-loader'),
{
loader: require.resolve('css-loader'),
options: cssOptions,
},
{
// Options for PostCSS as we reference these options twice
// Adds vendor prefixing based on your specified browser support in
// package.json
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,
}),
],
},
},
// ------------------------ Add SCSS Loaders --------------------------------
// ------------------------ This where I am getting issue ------------ Help needed here
{
test: /\.scss$/,
loaders: [
require.resolve('style-loader'),
require.resolve('css-loader'),
require.resolve('sass-loader')
],
},
{
exclude: [/\.(js|jsx|mjs)$/, /\.html$/, /\.json$/, /\.scss$/],
loader: require.resolve('file-loader'),
options: {
name: 'static/media/[name].[hash:8].[ext]',
},
}
];
if (preProcessor) {
loaders.push(require.resolve(preProcessor));
}
return loaders;
};
// This is the development configuration.
// It is focused on developer experience and fast rebuilds.
// The production configuration is different and lives in a separate file.
module.exports = {
mode: 'development',
// You may want 'eval' instead if you prefer to see the compiled output in DevTools.
// See the discussion in https://github.com/facebook/create-react-app/issues/343
devtool: '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: [
// Include an alternative client for WebpackDevServer. A client's job is to
// connect to WebpackDevServer by a socket and get notified about changes.
// When you save a file, the client will either apply hot updates (in case
// of CSS changes), or refresh the page (in case of JS changes). When you
// make a syntax error, this client will display a syntax error overlay.
// Note: instead of the default WebpackDevServer client, we use a custom one
// to bring better experience for Create React App users. You can replace
// the line below with these two lines if you prefer the stock client:
// require.resolve('webpack-dev-server/client') + '?/',
// require.resolve('webpack/hot/dev-server'),
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.
],
output: {
// Add /* filename */ comments to generated require()s in the output.
pathinfo: true,
// This does not produce a real file. It's just the virtual path that is
// served by WebpackDevServer in development. This is the JS bundle
// containing code from all our entry points, and the Webpack runtime.
filename: 'static/js/bundle.js',
// There are also additional JS chunk files if you use code splitting.
chunkFilename: 'static/js/[name].chunk.js',
// This is the URL that app is served from. We use "/" in development.
publicPath,
// Point sourcemap entries to original disk location (format as URL on Windows)
devtoolModuleFilenameTemplate: info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
},
optimization: {
// 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 seperated to enable long term caching
// https://twitter.com/wSokra/status/969679223278505985
runtimeChunk: true,
},
resolve: {
// This allows you to set a fallback for where Webpack should look for modules.
// We placed these paths second because we want `node_modules` to "win"
// if there are any conflicts. This matches Node resolution mechanism.
// https://github.com/facebook/create-react-app/issues/253
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)
),
// These are the reasonable defaults supported by the Node ecosystem.
// We also include JSX as a common component filename extension to support
// some tools, although we do not recommend using it, see:
// https://github.com/facebook/create-react-app/issues/290
// `web` extension prefixes have been added for better support
// for React Native Web.
extensions: ['.web.js', '.js', '.json', '.web.jsx', '.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',
},
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|jsx)$/,
enforce: 'pre',
use: [
{
options: {
formatter: require.resolve('react-dev-utils/eslintFormatter'),
eslintPath: require.resolve('eslint'),
},
loader: require.resolve('eslint-loader'),
},
],
include: paths.appSrc,
},
{
// `mjs` support is still in its infancy in the ecosystem, so we don't
// support it.
// Modules who define their `browser` or `module` key as `mjs` force
// the use of this extension, so we need to tell webpack to fall back
// to auto mode (ES Module interop, allows ESM to import CommonJS).
test: /\.mjs$/,
include: /node_modules/,
type: 'javascript/auto',
},
{
// "oneOf" will traverse all following loaders until one will
// match the requirements. When no loader matches it will fall
// back to the "file" loader at the end of the loader list.
oneOf: [
// "url" loader works like "file" loader except that it embeds assets
// smaller than specified limit in bytes as data URLs to avoid requests.
// A missing `test` is equivalent to a match.
{
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
loader: require.resolve('url-loader'),
options: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]',
},
},
// Process application JS with Babel.
// The preset includes JSX, Flow, and some ESnext features.
{
test: /\.(js|jsx)$/,
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,
// Don't waste time on Gzipping the cache
cacheCompression: false,
},
},
// Process any JS outside of the app with Babel.
// Unlike the application JS, we only compile the standard ES features.
{
test: /\.js$/,
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,
// Don't waste time on Gzipping the cache
cacheCompression: false,
// 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 a plugin 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,
}),
},
// Adds support for CSS Modules (https://github.com/css-modules/css-modules)
// using the extension .module.css
{
test: cssModuleRegex,
use: getStyleLoaders({
importLoaders: 1,
modules: true,
getLocalIdent: getCSSModuleLocalIdent,
}),
},
// Opt-in support for SASS (using .scss or .sass extensions).
// Chains the sass-loader with the css-loader and the style-loader
// to immediately apply all styles to the DOM.
// By default we support SASS Modules with the
// extensions .module.scss or .module.sass
{
test: sassRegex,
exclude: sassModuleRegex,
use: getStyleLoaders({ importLoaders: 2 }, 'sass-loader'),
},
// Adds support for CSS Modules, but using SASS
// using the extension .module.scss or .module.sass
{
test: sassModuleRegex,
use: getStyleLoaders(
{
importLoaders: 2,
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.
{
// 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|jsx)$/, /\.html$/, /\.json$/],
loader: require.resolve('file-loader'),
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({
inject: true,
template: paths.appHtml,
}),
// 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 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 === 'development') { ... }. See `./env.js`.
new webpack.DefinePlugin(env.stringified),
// This is necessary to emit hot updates (currently CSS only):
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
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
new WatchMissingNodeModulesPlugin(paths.appNodeModules),
// 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 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,
}),
],
// 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,
};
Error
Failed to compile.
Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
- configuration.module.rules[3].oneOf[6].use should be one of these:
non-empty string | function | object { loader?, options?, ident?, query? } | function | [non-empty string | function | object { loader?, options?, ident?, query? }]
-> Modifiers applied to the module when rule is matched
Details:
* configuration.module.rules[3].oneOf[3].use should be a string.
* configuration.module.rules[3].oneOf[3].use should be an instance of function
* configuration.module.rules[3].oneOf[3].use should be an object.
* configuration.module.rules[3].oneOf[3].use should be an instance of function
* configuration.module.rules[3].oneOf[3].use[3] should be a string.
* configuration.module.rules[3].oneOf[3].use[3] should be an instance of function
* configuration.module.rules[3].oneOf[3].use[3] has an unknown property 'test'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[3].use[3] has an unknown property 'loaders'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[3].use[4] should be a string.
* configuration.module.rules[3].oneOf[3].use[4] should be an instance of function
* configuration.module.rules[3].oneOf[3].use[4] has an unknown property 'exclude'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[4].use should be a string.
* configuration.module.rules[3].oneOf[4].use should be an instance of function
* configuration.module.rules[3].oneOf[4].use should be an object.
* configuration.module.rules[3].oneOf[4].use should be an instance of function
* configuration.module.rules[3].oneOf[4].use[3] should be a string.
* configuration.module.rules[3].oneOf[4].use[3] should be an instance of function
* configuration.module.rules[3].oneOf[4].use[3] has an unknown property 'test'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[4].use[3] has an unknown property 'loaders'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[4].use[4] should be a string.
* configuration.module.rules[3].oneOf[4].use[4] should be an instance of function
* configuration.module.rules[3].oneOf[4].use[4] has an unknown property 'exclude'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[5].use should be a string.
* configuration.module.rules[3].oneOf[5].use should be an instance of function
* configuration.module.rules[3].oneOf[5].use should be an object.
* configuration.module.rules[3].oneOf[5].use should be an instance of function
* configuration.module.rules[3].oneOf[5].use[3] should be a string.
* configuration.module.rules[3].oneOf[5].use[3] should be an instance of function
* configuration.module.rules[3].oneOf[5].use[3] has an unknown property 'test'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[5].use[3] has an unknown property 'loaders'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[5].use[4] should be a string.
* configuration.module.rules[3].oneOf[5].use[4] should be an instance of function
* configuration.module.rules[3].oneOf[5].use[4] has an unknown property 'exclude'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[6].use should be a string.
* configuration.module.rules[3].oneOf[6].use should be an instance of function
* configuration.module.rules[3].oneOf[6].use should be an object.
* configuration.module.rules[3].oneOf[6].use should be an instance of function
* configuration.module.rules[3].oneOf[6].use[3] should be a string.
* configuration.module.rules[3].oneOf[6].use[3] should be an instance of function
* configuration.module.rules[3].oneOf[6].use[3] has an unknown property 'test'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[6].use[3] has an unknown property 'loaders'. These properties are valid:
object { loader?, options?, ident?, query? }
* configuration.module.rules[3].oneOf[6].use[4] should be a string.
* configuration.module.rules[3].oneOf[6].use[4] should be an instance of function
* configuration.module.rules[3].oneOf[6].use[4] has an unknown property 'exclude'. These properties are valid:
object { loader?, options?, ident?, query? }
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! data-engine#0.1.0 start: `node scripts/start.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the data-engine#0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
You can't specify multiple loaders in a oneOf configuration. As the error shows, you can only use these object properties:
{ loader?, options?, ident?, query? }
This code is difficult to follow, buuut
You don't need a test: key because this is already inside a block that has a test: sassModuleRegex....
I think you don't need to add anything to the getStyleLoaders function at all. Remove your changes from there. I think all you need is your specific regex and configurations:
// Adds support for CSS Modules, but using SASS
// using the extension .module.scss or .module.sass
{
test: sassModuleRegex,
use: getStyleLoaders(
{
importLoaders: 2,
modules: true,
getLocalIdent: getCSSModuleLocalIdent,
},
'sass-loader'
),
},
I'm trying to get a very simple Angular2 app working, with Webpack as a module bundler. I'm following this code, and I copied all the configuration files as they are, only changing file paths. However, when I run npm-start, I get the following error, which I think is a Webpack error:
ERROR in ./hello.js
Module parse failed: /home/marieficid/Documentos/cloud/cloud/hello.js Line 1: Unexpected token
You may need an appropriate loader to handle this file type.
| import {bootstrap} from "angular2/platform/browser";
| import {Component} from "angular2/core";
|
# ./app.ts 2:0-21
As a result, the Angular2 code in my app isn't loaded.
This is my app.ts:
import "./hello.js";
This is hello.js, where the error seems to be (which I take to mean that webpack parsed app.ts just fine):
import {bootstrap} from "angular2/platform/browser";
import {Component} from "angular2/core";
#Component({
selector: 'app',
template: '<div>Hello world</div>'
})
class App{}
bootstrap(App);
And this iswebpack.config.js:
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var path = require('path');
module.exports = {
entry: {
'app': './app.ts',
'vendor': './vendor.ts'
},
output: {
path: "./dist",
filename: "bundle.js"
},
plugins: [
new webpack.optimize.CommonsChunkPlugin('vendor', 'vendor.bundle.js'),
new HtmlWebpackPlugin({
inject: false,
template: './index.html'
})
],
resolve: {
extensions: ['', '.ts', '.js']
},
module: {
loaders: [
{ test: /\.ts$/, loader: 'ts-loader' },
],
noParse: [ path.join(__dirname, 'node_modules', 'angular2', 'bundles') ]
},
devServer: {
historyApiFallback: true
}
};
All these files and node_modules are in the same directory.
I have found similar questions online but nothing worked for me. I also didn't install babel because the sample code I'm using as base doesn't use it, but if it's necessary I'm will.
As suggested by #napstablook
Since in your webpack.config.js file you have
resolve: {
extensions: ['', '.ts', '.js']
},
Webpack will try to handle those .js files but it needs a specific loader to do so which is, if I'm not wrong, script-loader.
In your case the solution is as simple as deleting the .js files, or changing their extension to be .ts.
For me this issue occurred when I ran ng test,
please check below points,
Console will list out the files that is causing the error.
Check the html file is correctly mapped from the typescript.
styleUrls file should point to the CSS file not html, this is the mistake I
did.
this error also comes up for me in angular forms when i had patch value set then an extra = sign
ncont.controls[position].patchValue({[cardname]:file}) = file
which is a dumb part on me and angular for not telling me