I installed jest and detox on a fresh react-native init project.
Install jest and jest-circus as per detox docs
Setup iOS build and test configuration
Get the following error consistently on new builds
my .detoxrc.json file:
{
"testRunner": "jest",
"runnerConfig": "e2e/config.json",
"configurations": {
"ios": {
"type": "ios.simulator",
"build": "xcodebuild -workspace ios/rndetox.xcworkspace -scheme rndetox -configuration Debug -sdk iphonesimulator -derivedDataPath ios/build",
"binaryPath": "ios/build/Build/Products/Debug-iphonesimulator/rndetox.app",
"device": {
"type": "iPhone 11"
}
},
"android": {
"type": "android.emulator",
"binaryPath": "SPECIFY_PATH_TO_YOUR_APP_BINARY",
"device": {
"avdName": "Pixel_2_API_29"
}
}
}
}
detox config.json
{
"testEnvironment": "./environment",
"testRunner": "jest-circus/runner",
"testTimeout": 120000,
"testRegex": "\\.e2e\\.js$",
"reporters": ["detox/runners/jest/streamlineReporter"],
"verbose": true
}
and e2e/environment.js
const {
DetoxCircusEnvironment,
SpecReporter,
WorkerAssignReporter,
} = require('detox/runners/jest-circus');
class CustomDetoxEnvironment extends DetoxCircusEnvironment {
constructor(config) {
super(config);
// Can be safely removed, if you are content with the default value (=300000ms)
this.initTimeout = 300000;
// This takes care of generating status logs on a per-spec basis. By default, Jest only reports at file-level.
// This is strictly optional.
this.registerListeners({
SpecReporter,
WorkerAssignReporter,
});
}
}
module.exports = CustomDetoxEnvironment;
I have tried including an init.js with a detox.init but same error.
At the time I tried this, detox was not supported yet on the fresh 0.63 release of React Native. If you build a new project at 0.62 it should be fine. I am not sure if this has been fixed yet though!
Related
I am beginner in React and I am struggling with compiler error. Let me introduce my situation. I have two independent React applications:
App A - Big ERP
App B - "Plugin" to the App A
I supposed I will develop App B as an independent application. Then, I will install it to the App A (using npm install git#github.repo/...) once I finish development of the App B. I expected I will call components from App B within the App A source code. Everything went fine until I run the compilation. I am receiving:
SyntaxError: /frontend/node_modules/connector_frontend/src/views/Connector/FormView/index.js: Unexpected token
In my /frontend/node_modules/connector_frontend/src/views/Connector/FormView/index.js there is following code:
const ConnectorFormView = ({ AppValues, secureFetch, ...rest }) => {
return (
<p>Hello world</p>
)
}
export default ConnectorFormView;
Error is ocuring at the position of <p>.
I call this functional component from App A (frontend/src/views/Connector/ConnectorNewEditView/index.js) like this
import ConnectorFormView from "connector_frontend/src/views/Connector/FormView";
const ConnectorNewEditView = () => {
return (<ConnectorFormView AppValues={appValues} secureFetch={secureFetch} />)
}
export default ConnectorNewEditView;
I tried to return just a plain text from the ConnectorFormView component like this:
const ConnectorFormView = ({ AppValues, secureFetch, ...rest }) => {
return (
'Hello world'
)
}
export default ConnectorFormView;
and it was compiled successfully, but once I return a JSX from the ConnectorFormView component the compiler get crashed.
Can anyone explain the source of this error please?
I successfully figured out the source of this problem and also I found a solution. I expected I can reuse however React component implemented in JSX. I expected, the only requirement is to install it, resp. download it in JSX form to my project using NPM. It's FALSE.
According to my research, I can reuse React components compiled from JSX to ES only. It is achievable using Babel. Another very important requiremen, it should not by installed as React application as I installed it. It must be installed as a NPM package with clearly defined set of exported components.
I found this paper https://levelup.gitconnected.com/publish-react-components-as-an-npm-package-7a671a2fb7f and I followed it step by step and finally I achieved desired result.
I can very briefly mention steps which I performed:
Implemented my custom component (mentioned above)
const ConnectorFormView = ({ AppValues, secureFetch, ...rest }) => {
return (
<p>Hello world</p>
)
}
export default ConnectorFormView;
Added the component to /src/index.js file in order to export it for host App
import ConnectorFormView from './components/ConnectorFormView';
export { ConnectorFormView };
Installed Babel and all needed presets
npm install --save-dev #babel/core #babel/cli #babel/preset-env
npm install -save #babel/polyfill
configured Babel - created file /babel.config.json with following content
{
"presets": [
[
"#babel/env",
{
"targets": {
"edge": "17",
"firefox": "60",
"chrome": "67",
"safari": "11.1"
},
"useBuiltIns": "usage",
"corejs": "3.6.5"
}
],
"#babel/preset-react"
]
}
Added new script to the package.json to compile React components to ES:
"build": "rm -rf dist && NODE_ENV=production babel src --out-dir dist --copy-files";
Executed npm run build to compile React components to ES. Compiled components are located in new dist folder.
Adjusted package.json that looks like this now
{
"name": "my_react_components",
"version": "0.1.0",
"private": true,
"description": "Some description",
"author": "Lukas",
"main": "dist/index.js",
"module": "dist/index.js",
"files": [ "dist", "README.md" ],
"dependencies": {
.
.
},
"scripts": {
"build": "rm -rf dist && NODE_ENV=production babel src--out-dir dist --copy-files",
.
.
.
},
"eslintConfig": {
"extends": "react-app"
},
"devDependencies": {
"#babel/cli": "^7.17.10",
"#babel/core": "^7.18.5",
"#babel/preset-env": "^7.18.2"
}
}
Pushed dist folder to the git.
Installed repository to the host project using NPM
npm install https://github.com/my_custom/react_component.git
Import and use the component from installed git repo
import ConnectorFormView from 'my_react_components';
function App() {
return (
<ConnectorFormView />
);
}
export default App;
Actually that's all. I very recommend to see the attached paper at the beginning of this answer because I maybe skipped very important info for you.
In our react-native project we use detox for e2e test. These were working fine until suddenly we experienced the test suites being assigned to undefined. Weirdly this problem persisted upon reverting any changes to a state where detox was working previously. The problem exists in both, the iOS and Android configurations.
Console error of Detox, assigned to undefined
(This problem is similar to this question, however, as of now detox should work with our react native version.)
My detoxrc.json:
{
"testRunner": "jest",
"runnerConfig": "e2e/config.json",
"configurations": {
"ios": {
"type": "ios.simulator",
"binaryPath": "ios/build/Build/Products/Test-iphonesimulator/Cliniserve One.app",
"build": "xcodebuild -workspace ios/shiftapp.xcworkspace -scheme shiftapp.test -configuration Test -sdk iphonesimulator -derivedDataPath ios/build",
"device": {
"type": "iPhone 11"
}
},
"android": {
"type": "android.emulator",
"binaryPath": "android/app/build/outputs/apk/development/debug/shiftapp_development_debug.apk",
"build": "cd android && ./gradlew assembleDevelopmentDebug assembleDevelopmentDebugAndroidTest -DtestBuildType=debug && cd ..",
"device": {
"avdName": "Pixel_API_29_AOSP"
}
}
}
}
My e2e/config.json
{
"setupFilesAfterEnv" : ["./init.js"],
"testEnvironment": "./environment",
"testRunner": "jest-circus/runner",
"testTimeout": 120000,
"testRegex": "\\.e2e\\.js$",
"reporters": ["detox/runners/jest/streamlineReporter"],
"verbose": true
}
And e2e/environment.js
const {
DetoxCircusEnvironment,
SpecReporter,
WorkerAssignReporter,
} = require('detox/runners/jest-circus');
class CustomDetoxEnvironment extends DetoxCircusEnvironment {
constructor(config) {
super(config);
// Can be safely removed, if you are content with the default value (=300000ms)
this.initTimeout = 300000;
// This takes care of generating status logs on a per-spec basis. By default, Jest only reports at file-level.
// This is strictly optional.
this.registerListeners({
SpecReporter,
WorkerAssignReporter,
});
}
}
module.exports = CustomDetoxEnvironment;
Any help or idea on how to get it to work again would be highly appreciated.
I have an app that I'm now trying to build to distribute for testing.
I'm using React and Electron with electron-builder to build the app itself. I'm not a web developer so I've been trying to keep things basic and just get something to work.
After about five hours I was finally able to get the app to build somewhat properly and launch, but when it loads index.js (the first page in the app) it displays the source for index.js instead of rendering the content. In the devtools everything is inside a pre tag.
I've already looked at this thread and tried that but it didn't change anything, and I'm not using service workers as far as I can tell.
What the actual Electron window displays after launching with the devtools alongside.
Here's the createWindow function from main.js.
I've tried doing all kinds of things to the pathname with no effect.
function createWindow() {
const startUrl = process.env.ELECTRON_START_URL || url.format({
pathname: path.join(__dirname, '../src/index.js'),
protocol: 'file:',
slashes: true,
});
mainWindow = new BrowserWindow({
width: 800, height: 600, title: "Electron App", webPreferences: {
nodeIntegration: true
}
});
mainWindow.loadURL(startUrl);
mainWindow.on('closed', function () {
mainWindow = null;
});
}
Here are my scripts from package.json
"scripts": {
"start": "nf start -p 3000",
"start-electron": "set ELECTRON_START_URL=http://localhost:3000 && electron .",
"react-start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject",
"build-electron": "npm run build && electron-builder build --win"
}
Here's the build part too. To be honest, I don't really understand what this is or does but after a few hours of trial and error this is what gets me to the point I am now.
"build": {
"appId": "Test",
"extends": null,
"files": [
"./build/**/*",
"./electron/main.js",
"./src/**/*"
]
}
As far as I can tell, it has something to do with the Electron start URL, because when I removed that from const startUrl in createWindow, running the app using npm start did the same thing as the built Electron app, whereas before using npm would launch the app normally every time.
EDIT after solution:
Modified build in package.json to
"build": {
"appId": "Test",
"extends": null,
"files": [
"./build/**/*",
"./electron/main.js",
"./src/**/*"
],
"directories": {
"buildResources": "./public"
}
}
I haven't tested it without this modification so I'm not sure that it's actually necessary.
Start URL was changed to
const startUrl = process.env.ELECTRON_START_URL || url.format({
pathname: path.join(__dirname, '../build/index.html'),
protocol: 'file:',
slashes: true,
});
You're supposed to set it up with an html file.
const startUrl = process.env.ELECTRON_START_URL || url.format({
pathname: path.join(__dirname, '../src/index.html'),
protocol: 'file:',
slashes: true,
});
Your browser window should load the build/index.html on production mode
const isDev = require("electron-is-dev");
if (isDev) {
mainWindow.loadURL(process.env.ELECTRON_START_URL);
} else {
mainWindow.loadFile(path.join("build", "index.html"));
}
I am working a react app where i am using next js and express, I have choose zeit now for servless but when i deploying this facing error Error: No serverless pages were built
next.config.js
const configuration = withTypescript(
withLess({,
target: process.env.NODE_ENV === "development" ? "server" : "serverless",
cssModules: true,
lessLoaderOptions: {
javascriptEnabled: true,
modifyVars: themeVariables // make your antd custom effective
},
exportPathMap: async function(defaultPathMap) {
return {
"/": { page: "/index" },
};
},
webpack: config => {
config.plugins = config.plugins || [];
config.plugins = [
...config.plugins,
// Read the .env file
new Dotenv({
path: path.join(__dirname, "../.env"),
systemvars: true
})
];
return config;
},
})
);
module.exports = configuration;
using next version : "#types/next": "^8.0.0",
now.json
{
"version": 2,
"name": "web",
"builds": [
{ "src": "package.json", "use": "#now/next" }
],
}
inside package json
"scripts": {
"dev": "next src",
"build": "next build src",
"start": "next run build && next start src",
"export": "npm run build && next export src -o ./out",
"now-build": "next build src","
},
Getting error from zeit Now logs
preparing lambda files...
2019-04-19T17:24:04.955Z Error: No serverless pages were built. https://err.sh/zeit/now-builders/now-next-no-serverless-pages-built
at Object.exports.build (/tmp/utils/build-module/node_modules/#now/next/index.js:305:13)
at <anonymous>
please help me here to figure it out.
Thanks.
I have a NextJS website I'm building and it's great, except that it does not work in IE 10/11 because some code is not being transpiled correctly. I'm really bad with babel and webpack, and have never had to config them myself before. I've been trying to solve by reading online for two days now, and nothing seems to work for me.
The exact error I get is weakSet is not defined, and it is coming from the common.js file.
Here is my .babelrc file, located in the root of my project.
// .babelrc
{
"presets": ["next/babel"],
"plugins": [
["styled-components", {
"ssr": true,
"displayName": true,
"preprocess": false
}]
]
}
my package.json
{
"name": "bradshouse",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"dev": "next",
"build": "next build",
"start": "next start"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"next": "^7.0.2",
"react": "^16.6.0",
"react-dom": "^16.6.0",
"react-pose": "^4.0.1",
"styled-components": "^4.0.2"
},
"devDependencies": {
"babel-plugin-styled-components": "^1.8.0"
}
}
The full repo is here if you're interested in launching it yourself. node modules are excluded, so npm install, then npm run build, then npm run start.
https://github.com/TJBlackman/Brads-House
Thanks for the help! Feel free to just link articles and I'll read them thoroughly! Thanks.
Edit: As a quick fix, I added this polyfill script to the <head> of all my pages, and it still did not fix this issue... Wat?! <script src="https://cdn.polyfill.io/v2/polyfill.min.js"></script>
How to support IE 11 by transpiling node_modules code in NextJS
Original answer found in the ziet/nextjs issues thread (view here). Shout out to joaovieira <3
npm install --save-dev babel-polyfill
create a polyfill.js where ever you want it, and inside that file, import the babel-polyfill like so:
import 'babel-polyfill';
Next, if you do not have a next.config.js file, create it at your root directory. Now update your this file to include the following webpack config. Notice how it's using the polyfill file you just made. Full file example:
module.exports = {
webpack: (config) => {
// Unshift polyfills in main entrypoint.
const originalEntry = config.entry;
config.entry = async () => {
const entries = await originalEntry();
if (entries['main.js']) {
entries['main.js'].unshift('./path_to/polyfills.js'); // <- polyfill here
}
return entries;
};
return config;
}
}
Finally, if you don't have a .babelrc file in your project's root directory, create one. Inside it, use the code below that matches the version of babel you're using.
Babel 7
{
"presets": [
[
"next/babel",
{
"preset-env": {
"useBuiltIns": "usage"
}
}
]
]
}
Babel 6
{
"presets": [
[
"next/babel",
{
"preset-env": {
"targets": {
"browsers": "defaults"
},
"useBuiltIns": true
}
}
]
]
}
That's all I know. I'm not even thinking about IE 10...
Good luck!!
I am using next#9.3 with reflect-metadata, and here is my solution:
/** next.config.js > webpack **/
const pathToPolyfills = './src/polyfills.js'
// Fix [TypeError: Reflect.metadata is not a function] during production build
// Thanks to https://leerob.io/blog/things-ive-learned-building-nextjs-apps#polyfills
// There is an official example as well: https://git.io/JfqUF
const originalEntry = config.entry
config.entry = async () => {
const entries = await originalEntry()
Object.keys(entries).forEach(pageBundleEntryJs => {
let sourceFilesIncluded = entries[pageBundleEntryJs]
if (!Array.isArray(sourceFilesIncluded)) {
sourceFilesIncluded = entries[pageBundleEntryJs] = [sourceFilesIncluded]
}
if (!sourceFilesIncluded.some(file => file.includes('polyfills'))) {
sourceFilesIncluded.unshift(pathToPolyfills)
}
})
return entries
}
/** src/polyfills.js **/
// Other polyfills ...
import 'reflect-metadata'