How to change babel presets for tests - vue.js

I'm trying to run a very simple test with jest and vue-test-utils but I have an error while running my test.
It's a babel preset error :
And here is my babel.config.json :
module.exports = {
presets: [
'#vue/cli-plugin-babel/preset'
]
}
Do someone have any idea what to change in my preset ?
PS : I'm working on a vue-cli project with typescript.

Related

Fullcalendar custom css with Vue3 and postcss

I am using fullcalendar with vue3. I want to change change colors for button and text in fullcalendar.
vue version
"vue": "^3.2.26",
I am getting error
Syntax Error: Error: PostCSS plugin postcss-custom-properties requires
PostCSS 8.
I am following steps mentioned in fullcalendar documentation.
fullcalendar-vars.css
:root {
--fc-border-color: green;
--fc-button-text-color: #ff0000;
}
I have installed following packages
"postcss": "^8.4.7",
"postcss-calc": "^8.2.4",
"postcss-custom-properties": "^12.1.4",
"postcss-loader": "^6.2.1",
Added postcss.config.js at root
module.exports = {
plugins: [
require('postcss-custom-properties')({
preserve: false, // completely reduce all css vars
importFrom: [
'client/fullcalendar-vars.css' // look here for the new values
]
}),
require('postcss-calc')
]
}
And my vue.config.js as follow
const path = require("path");
module.exports = {
pages: {
index: {
entry: "./client/main.js",
},
},
outputDir: path.resolve(__dirname, "./client/dist"),
};
Also I would like to know, Do I need make any changes in vue.config.js?
PostCSS error
Vue CLI scaffolded projects already include PostCSS (including postcss, postcss-calc, and postcss-loader), so you don't need to install it in your project. The only dependency needed here is postcss-custom-properties.
To resolve the PostCSS error, you should uninstall the PostCSS dependencies that you had mistakenly added:
npm uninstall --save-dev postcss postcss-calc postcss-loader
Starting from scratch
To setup custom colors for FullCalendar in a Vue CLI scaffolded project:
Install postcss-custom-properties with:
npm install --save-dev postcss-custom-properties
Create postcss.config.js with the following PostCSS configuration:
// <projectRoot>/postcss.config.js
module.exports = {
plugins: [
require("postcss-custom-properties")({
preserve: false,
importFrom: [
"client/fullcalendar-vars.css",
],
}),
require("postcss-calc"),
],
}
Create fullcalendar-vars.css with the following CSS:
/* <projectRoot>/client/fullcalendar-vars.css */
:root {
--fc-border-color: green;
--fc-button-text-color: #ff0000;
}
Note: Changes to this file are not hot-reloaded, so the dev server must be restarted to reflect any updates.
Start the Vue CLI dev server with:
npm run serve
demo

Android App crashes when "#babel/preset-env" is added

While running:
npx react-native start --reset-cache
npx react-native run-android
My app crashes at the end of the build without any log.
The problem is coming from #babel/preset-env in babel.config.js (used by jest tests)
babel.config.js :
module.exports = {
presets: ['module:metro-react-native-babel-preset', "#babel/preset-env", '#babel/preset-react'],
plugins: [
["#babel/plugin-proposal-private-methods", { "loose": true }],
'react-native-reanimated/plugin'
],
};
Removing "#babel/preset-env" is resolving the issue, but I need it to launch Jest.
Do you have any idea to fix this ?
I fixed it by simply removing '#babel/preset-react' and '#babel/preset-env' from babel.config.js.
Code was transpiling with module:metro-react-native-babel-preset which caused this issue.

Tests fail to run on React Native

My babel.config.js is:
module.exports = {
presets: [
'module:metro-react-native-babel-preset'
]
};
When I run npm test I get:
Test suite failed to run
[BABEL] unknown: Preset /* your preset / requires a filename to be set when babel is called directly,
babel.transform(code, { filename: 'file.ts', presets: [/ your preset */] });
See https://babeljs.io/docs/en/options#filename for more information.
If I change config file to:
module.exports = {
presets: [
'react-native'
]
}
then all tests run.
My question: can I change it? What is the difference between both?
Thank you!

Eslint error in postcss.config at vue-cli

I have started a new vue-cli project with
vue create -n tailwind-demo
? Please pick a preset: Manually select features
? Check the features needed for your project: Babel, TS, PWA, Vuex, Linter
? Use class-style component syntax? Yes
? Use Babel alongside TypeScript (required for modern mode, auto-detected polyfills, transpiling JSX)? Yes
? Pick a linter / formatter config: Prettier
? Pick additional lint features: Lint on save, Lint and fix on commit
? Where do you prefer placing config for Babel, ESLint, etc.? In dedicated config files
I have also add the following postcss.config.js:
module.exports = {
plugins: [
require("postcss-preset-env")({ stage: 0 }),
require("tailwindcss")(),
require("autoprefixer")()
]
};
When i run the yarn lint command it got the follow errors
error: Require statement not part of import statement (#typescript-eslint/no-var-requires) at postcss.config.js:3:5:
error: Require statement not part of import statement (#typescript-eslint/no-var-requires) at postcss.config.js:4:5:
error: Require statement not part of import statement (#typescript-eslint/no-var-requires) at postcss.config.js:5:5:
How can i import the plugins or how should i configure the eslint in Vue CLI for the postcss.config.js?
I have tried something like
import tailwindCss from "tailwindcss";
But i got a SyntaxError: Unexpected identifier while building.
It seems to work with the following postcss.config.js
module.exports = {
plugins: {
"postcss-preset-env": {
stage: 0
},
tailwindcss: {}
}
};

vuejs use babel plugin-proposal-class-properties

I have a class where I use some static properties like this:
class Entity {
static LIMIT = 10;
}
So, i can do:
Entity.LIMIT
In order to do that I'm using babel plugin-proposal-class-properties and in my .babelrc I have:
{
"presets": ["#babel/preset-env"],
"plugins": [
["#babel/plugin-proposal-class-properties", { "loose": true }]
]
}
I'm using jest and my test passes using that config. Now I need to use funcionality of Entity class inside a vuejs component. But I got the error:
Module parse failed: Unexpected token. You may need an appropriate loader to handle this file type
I also tried a babel config file in my project root: babel.config.js
module.exports = {
presets: ["#babel/preset-env"],
plugins: [
["#babel/plugin-proposal-class-properties", { "loose": true }]
]
};
But didn't work.
How can i configure vuejs, to make work this babel plugin?
I'm using vue2.6.11 and vue-cli 3
I got this exact same issue when trying to use "importabular" with vuejs (vuejs 2, vue-cli-3). Importabular uses class properties, after some research I found this babel plugins (plugin-proposal-class-properties), I installed it and added it in vue.config.js.
To finally make it work, I had to add "importabular" (or the nested path) in the transpileDependencies: option. Why that? Because, by default, Babel ignores whatever is in node_module, so you have to tell Babel to not ignore this specific folder.
So, if you want to use babel or some babel plugins with some node_module with vue you should modify the vue.config.js as follow :
module.exports = {
transpileDependencies: [
'path/in/node_module',
],
}
and change the babel.config.js as follow:
module.exports = {
"presets": [
"#vue/cli-plugin-babel/preset"
],
"plugins": [
["#babel/plugin-proposal-class-properties"],
]
}