Running jest on the application fails with:
Details:
/home/**/node_modules/monaco-editor/esm/vs/editor/editor.api.js:5
import { EDITOR_DEFAULTS } from './common/config/editorOptions.js';
^
SyntaxError: Unexpected token {
> 1 | import * as monaco from "monaco-editor/esm/vs/editor/editor.api.js";
| ^
2 |
3 | /**
4 | * Get create function for the editor.
at ScriptTransformer._transformAndBuildScript (node_modules/#jest/transform/build/ScriptTransformer.js:537:17)
at ScriptTransformer.transform (node_modules/#jest/transform/build/ScriptTransformer.js:579:25)
at Object.<anonymous> (src/utils/editor-actions.js:1:1)
Application has installed packages for jest and babel-jest.
Babel config:
const presets = [
[
"#babel/env",
{
targets: {
edge: "17",
firefox: "60",
chrome: "67",
safari: "11.1"
},
useBuiltIns: "usage",
corejs: 3,
}
],
"#babel/preset-react"
];
const plugins = [
"#babel/plugin-proposal-object-rest-spread",
"#babel/plugin-proposal-class-properties",
"babel-plugin-styled-components"
];
module.exports = { presets, plugins };
The import statement as suggested in the docs for lazy loading modules from monaco leads to the esm folder, which jest is not familiar with.
import * as monaco from "monaco-editor/esm/vs/editor/editor.api.js";
By default, babel-jest would not transform node_modules and hence anything referencing the monaco-editor would error out. A possible solution is to include monaco-editor package into the compilation step by transformIgnorePatterns as mentioned in the docs
Add these to the jest config:
{
"transformIgnorePatterns": [
"node_modules\/(?!(monaco-editor)\/)"
]
}
PS: If you are using jest-dom, it might start complaining on not implmenting certain features from monaco-editor, you can mock it out with:
jest.mock("monaco-editor/esm/vs/editor/editor.api.js");
The only workaround that helped me in that issue (from here):
In folder __mocks__ create file react-monaco-editor.js with content:
import * as React from 'react';
export default function MonacoEditor() {
return <div />;
}
I have the same issue with Jest and Monaco and to make the tests pass I had to:
Add a moduleNameMapper for monaco-editor: #133 (comment)
Configure a setupTests.js like explained here: stackOverflow
I'm using:
"jest": "^24.9.0"
"babel-jest": "24.9",
"monaco-editor": "^0.20.0"
"react-monaco-editor": "0.33.0",
"monaco-editor-webpack-plugin": "^1.8.2",
Related
I am migrating some jest tests over to vitest and some of my tests are failing due to an import issue of an external package dependency in node_modules. Specifically: #package/dependency seems to be an ES Module but shipped in a CommonJS package.
vitest suggests this change to my config:
export default {
test: {
deps: {
inline: [
"#package"
]
}
}
}
Unfortunately, this fix does not work. Previously I resolved this issue with moduleNameMapper in jest where "#package/dependency": "#package/dependency/js" mapped to a valid import. I tried setting alias in both test.alias and resolve.alias, but neither works.
I am using Typescript in this project, and the rest of my test config looks like this:
test: {
globals: true,
environment: "jsdom",
setupFiles: "./src/setupTests.js",
}
// setupTests.js
import {configure} from 'enzyme/build';
import Adapter from 'enzyme-adapter-react-16/build';
configure({ adapter: new Adapter() });
What can I do to get around this? Thanks.
I'm using Jest in Vite. It works until I import a module from node_module.
import { defineComponent } from 'vue'
import { useCookies } from '#vueuse/integrations/useCookies'
I got this error.
FAIL src/components/MyComponent/index.test.ts
● Test suite failed to run
Cannot find module '#vueuse/integrations/useCookies' from 'src/components/MyComponent/index.vue'
Require stack:
src/components/MyComponent/index.vue
src/components/MyComponent/index.test.ts
16 | <script lang="ts">
17 | import { defineComponent } from 'vue'
> 18 | import { useCookies } from '#vueuse/integrations/useCookies'
| ^
19 |
20 | export default defineComponent({
at Resolver.resolveModule (node_modules/jest-resolve/build/index.js:306:11)
I guess somehow Jest cannot resolve the module starts with '#'. Maybe I should write a moduleNameMapper? I also tried to install vite-jest, but somehow my app just crash, maybe I mess up something.
Anyway, thanks for your time, and if you need more information like my jest.config.js or vite.config.ts, please let me know.
Thank you.
Use moduleNameMapper in your jest.config.js file like following:
module.exports = {
//...
moduleNameMapper: {
"^#/(.*)$": "<rootDir>/src/$1",
},
};
Also, if you are using TypeScript, you should add the following to your tsconfig.json file as well:
{
"compilerOptions": {
"paths": {
"#/*": ["./src"]
}
}
}
I have the following configuration in my jsconfig.json file:
{
"compilerOptions": {
"baseUrl": "./src"
},
"include": ["src"]
}
Which lets me do this:
import { App } from 'components'
import * as actions from 'actions/app.actions'
Instead of this:
import { App } from '../components'
import * as actions from '../actions/app.actions'
To get started with unit testing, I've created a simple App.test.jsx in src/components/tests
import { render } from '#testing-library/react'
import { App } from 'components'
it('renders without crashing', () => {
render(<App />)
})
However, when I run yarn test (which is sugar for react-scripts test), it throws with this ugly error:
FAIL src/components/tests/App.test.jsx
● Test suite failed to run
Your application tried to access components, but it isn't declared in your dependencies;
this makes the require call ambiguous and unsound.
Required package: components (via "components")
Required by: C:\Users\Summer\Code\sandbox\src\components\tests\
23714 | enumerable: false
23715 | };
> 23716 | return Object.defineProperties(new Error(message), {
| ^
23717 | code: { ...propertySpec,
23718 | value: code
23719 | },
at internalTools_makeError (.pnp.js:23716:34)
at resolveToUnqualified (.pnp.js:24670:23)
at resolveRequest (.pnp.js:24768:29)
at Object.resolveRequest (.pnp.js:24846:26)
It seems like Jest (or Yarn?) thinks components is a node package, because it's not aware of the absolute imports setting in my jsconfig.json. Is there a way to make it aware? Or do I have to choose between 0% coverage and relative imports?
I've tried entering "moduleNameMapper" under "jest" in my package.json like the documentation explains, but it didn't help. I got the same error + one more after it.
I've also tried changing components in the test file to ../components but then it complains about actions/app.actions which is inside the <App /> component.
Module name mapper config:
/* package.json */
{
/* ... */
"jest": {
"moduleNameMapper": {
"actions(.*)$": "<rootDir>/src/actions$1",
"assets(.*)$": "<rootDir>/src/assets$1",
"components(.*)$": "<rootDir>/src/components$1",
"mocks(.*)$": "<rootDir>/src/mocks$1",
"pages(.*)$": "<rootDir>/src/pages$1",
"reducers(.*)$": "<rootDir>/src/reducers$1",
"scss(.*)$": "<rootDir>/src/scss$1",
"store(.*)$": "<rootDir>/src/store$1",
"themes(.*)$": "<rootDir>/src/themes$1",
"api": "<rootDir>/src/api.js",
}
}
}
This is because Yarn takes control of the resolution pipeline, and thus isn't aware of resolution directives coming from third-party configuration (like moduleNameMapper).
This isn't to say you have no options, though - specifically, the fix here is to avoid moduleNameMapper, and instead leverage the builtin link: dependency protocol. This has other advantages, such as being compatible with all tools (TS, Jest, ESLint, ...) without need to port your aliases to each configuration format.
See also: Why is the link: protocol recommended over aliases for path mapping?
I need to use vuetify in my nuxt js project as plugin. I've tried package #nuxtjs/vuetify but get error
Cannot assign to read only property 'base' of object '#'
I've install my nuxt project from official codesandbox online playground in local server and on shared hosting. All the time I got the same error. I tried install node modules using npm and yarn. How I can add fresh vuetify version to last version of nuxt js as plugin with npm package vuetify?
Install vuetify and #mdi/font
Create a file vuetify.js in your plugins folder with the following code:
import Vue from 'vue'
import Vuetify from 'vuetify'
import colors from './../config/colors'
import 'vuetify/dist/vuetify.min.css'
import '#mdi/font/css/materialdesignicons.css'
Vue.use(Vuetify)
export default ctx => {
const vuetify = new Vuetify({
theme: {
themes: {
light: {
...colors
},
dark: {
// colors
}
}
}
})
ctx.app.vuetify = vuetify
ctx.$vuetify = vuetify.framework
}
Edit nuxt.config.js file by adding vuetify to plugins like this
{
...
plugins: ['~plugins/vuetify.js'],
...
}
I achieved this with the following:
npm install --save vuetify
create a file vuetify.js in your plugins folder with the following code:
import Vue from 'vue'
import Vuetify from 'vuetify'
Vue.use(Vuetify)
Amend your nuxt.config.js:
plugins: ['~plugins/vuetify.js'],
build: {
vendor: ['vuetify']
}
There is a discussion of this issue here: https://github.com/nuxt-community/vuetify-module/issues/268
Fixing custom colours and specifying options in external files seem to affect this.
If you have colours specified in the options, replace primary: colors.blue with primary: colors.blue.base.
I have / had same issue. I simply made sure to use version 1.10.3 or below defined explicitly in package.json
"#nuxtjs/vuetify": "1.10.3", (not with the ^1.10.3)
I also noticed any version over this also adds an "undefined" 404 to the end of every url request. I posted on Nuxt / CMTY but they have a user base of zero people who answer any questions.
Choose Vuetify as ur UI Framework when initial a Nuxt project
Create a new file in plugins/vuetify.js
import Vue from 'vue'
import Vuetify from 'vuetify'
import colors from 'vuetify/es5/util/colors'
Vue.use(Vuetify)
export default new Vuetify({
theme: {
light: true,
themes: {
light: {
primary: colors.blue.darken2,
accent: colors.grey.darken3,
secondary: colors.amber.darken3,
info: colors.teal.lighten1,
warning: colors.amber.base,
error: colors.deepOrange.accent4,
success: colors.green.accent3
}
}
}
})
Add the plugin config inside nuxt.config.js
export default {
plugins: ['~/plugins/vuetify.js'],
}
Restart server, npm run dev
An image example:
vuetify.js
Done!
you can do the following steps in order and finally use Vuetify components:
1- Setup vuetify
yarn add vuetify#next sass
2- Your package.json should now look similar to the following:
// package.json
"devDependencies": {
"nuxt": "3.0.0-rc.1"
},
"dependencies": {
"sass": "^1.51.0",
"vuetify": "^3.0.0-beta.1"
}
3- Creating your Vuetify plugin
You must create this file in the plugin folder and put these codes inside it.
// plugins/vuetify.js
import { createVuetify } from 'vuetify'
import * as components from 'vuetify/components'
import * as directives from 'vuetify/directives'
export default defineNuxtPlugin(nuxtApp => {
const vuetify = createVuetify({
components,
directives,
})
nuxtApp.vueApp.use(vuetify)
})
4- Configure Nuxt 2 or 3 to use our new plugin
In this section, you should put these codes in the nuxt.config.ts file like this
// nuxt.config.ts
import { defineNuxtConfig } from 'nuxt'
// https://v3.nuxtjs.org/api/configuration/nuxt.config
export default defineNuxtConfig({
css: ['vuetify/lib/styles/main.sass'],
build: {
transpile: ['vuetify'],
},
vite: {
define: {
'process.env.DEBUG': false,
},
},
})
5- Finally, in order to test that you have done the steps correctly, you can use this component in your code to see if Vuetify is installed correctly or not.
<v-btn>Button</v-btn>
Tip: If you have done these steps or you want to use a new component, in many cases it is better to stop and restart your project once.
I'm trying to make use of the jsonapi-vuex npm package. I import it within my code like so:
import { jsonapiModule } from "jsonapi-vuex";
Jest however stumbles over this package. This package uses es6 modules. The index.js for that node module looks like this:
export { jsonapiModule, utils } from './src/jsonapi-vuex'
Jest fails on this even though babel-jest is installed with the following error:
Jest encountered an unexpected token
/node_modules/jsonapi-vuex/index.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export { jsonapiModule, utils } from './src/jsonapi-vuex'
^^^^^^
I've tried various things:
Tried adding to jest config so that just shouldn't ignore this library when transpiling:
transformIgnorePatterns: [
"<rootDir>/node_modules/(?!jsonapi-vuex)"
],
Tried the babel-plugin-transform-es2015-modules-commonjs plugin
As far as I can tell, babel-jest makes use of .babelrc. I have this configured with the #babel/preset-env preset, which is supposed to handle es6 modules... so I really don't understand why it is failing. Here's the .babelrc
{
"presets": [
[
"#babel/preset-env",
{
"modules": "commonjs",
"targets": {
"node": "current"
}
}
]
]}