styled-jsx VS jest

You'd rather use this over tailwind? Na...

styled-jsx -> A library with a lot of similar features like styled-components. Has some extra features here and there.

This isn't a new idea. CSS in JS is obviously a thing, but that usually implies having component code with CSS right alongside it in some sort of JS based syntax. There's also JSS which is a library for writing CSS with JS.

The CSS we'll use for the Gantt chart is included in the starter code. We've used Styled JSX, which comes with Next.js, to write scoped-styled components. There are some global styles in styles/globals.js. These global styles are added to our app in the Layout component in the components folder. The entire app is wrapped in this Layout component in the _app.js file, which is in the pages folder.

Styled JSX is what we're using at work right now, since we're using Next.js and it comes with this out of the box. We're actually using both SCSS modules for static styles and Styled JSX for dynamic styles. It's been great so far.

// schema.json { "$schema": "http://json-schema.org/schema", "cli": "nx", "$id": "ReactLibrary", "title": "", "type": "object", "properties": { "name": { "type": "string", "description": "Library name", "$default": { "$source": "argv", "index": 0 }, "x-prompt": "What name would you like to use for the library?", "pattern": "^[a-zA-Z].*$" }, "directory": { "type": "string", "description": "A directory where the lib is placed.", "alias": "dir" }, "domain": { "description": "Domain where this library belongs.", "type": "string", "default": "none", "alias": "dom", "x-prompt": { "message": "Which domain this library belongs?", "type": "list", "items": [ { "value": "web", "label": "Web" }, { "value": "common", "label": "Common" } ] } }, "scope": { "type": "string", "description": "A scope for the lib.", "alias": "sc" }, "type": { "description": "Library type", "type": "string", "alias": "t", "x-prompt": { "message": "Select library type?", "type": "list", "items": [ { "value": "data", "label": "Data" }, { "value": "model", "label": "Model" }, { "value": "util", "label": "Util" }, { "value": "feature", "label": "Feature" }, { "value": "ui", "label": "Ui" } ] } }, "style": { "description": "The file extension to be used for style files.", "type": "string", "default": "none", "alias": "s", "x-prompt": { "message": "Which stylesheet format would you like to use?", "type": "list", "items": [ { "value": "css", "label": "CSS" }, { "value": "scss", "label": "SASS(.scss) [ http://sass-lang.com ]" }, { "value": "styl", "label": "Stylus(.styl) [ http://stylus-lang.com ]" }, { "value": "less", "label": "LESS [ http://lesscss.org ]" }, { "value": "styled-components", "label": "styled-components [ https://styled-components.com ]" }, { "value": "@emotion/styled", "label": "emotion [ https://emotion.sh ]" }, { "value": "styled-jsx", "label": "styled-jsx [ https://www.npmjs.com/package/styled-jsx ]" }, { "value": "none", "label": "None" } ] } }, "linter": { "description": "The tool to use for running lint checks.", "type": "string", "enum": ["eslint", "tslint"], "default": "eslint" }, "unitTestRunner": { "type": "string", "enum": ["jest", "none"], "description": "Test runner to use for unit tests.", "default": "jest" }, "skipFormat": { "description": "Skip formatting files.", "type": "boolean", "default": false }, "skipTsConfig": { "type": "boolean", "default": false, "description": "Do not update `tsconfig.json` for development experience." }, "pascalCaseFiles": { "type": "boolean", "description": "Use pascal case component file name (e.g. `App.tsx`).", "alias": "P", "default": false }, "routing": { "type": "boolean", "description": "Generate library with routes." }, "appProject": { "type": "string", "description": "The application project to add the library route to.", "alias": "a" }, "publishable": { "type": "boolean", "description": "Create a publishable library." }, "buildable": { "type": "boolean", "default": false, "description": "Generate a buildable library." }, "importPath": { "type": "string", "description": "The library name used to import it, like `@myorg/my-awesome-lib`." }, "component": { "type": "boolean", "description": "Generate a default component.", "default": true }, "js": { "type": "boolean", "description": "Generate JavaScript files rather than TypeScript files.", "default": false }, "globalCss": { "type": "boolean", "description": "When `true`, the stylesheet is generated using global CSS instead of CSS modules (e.g. file is `*.css` rather than `*.module.css`).", "default": false }, "strict": { "type": "boolean", "description": "Whether to enable tsconfig strict mode or not.", "default": true }, "setParserOptionsProject": { "type": "boolean", "description": "Whether or not to configure the ESLint `parserOptions.project` option. We do not do this by default for lint performance reasons.", "default": false }, "standaloneConfig": { "description": "Split the project configuration into `/project.json` rather than including it inside `workspace.json`.", "type": "boolean" }, "compiler": { "type": "string", "enum": ["babel", "swc"], "default": "swc", "description": "Which compiler to use." } }, "required": ["name", "type", "scope", "domain"] }

The previous three methods covered the best styling options if you prefer Utility CSS. But perhaps you are more of a CSS-in-JS kind of person. In which case, Styled-JSX might be up your alley.

GitHub | Website

Jest

you have selected a testing framework. In my case, it's Jest with Supertest

Jest, created and maintained by Facebook, is a JavaScript testing framework with a focus on simplicity. It is often recognized for its zero-configuration setup and seamless integration, especially with React applications, making it a favored choice for developers in both small-scale projects and large enterprise applications.

Jest (https://jestjs.io/)

console.error Jest encountered an unexpected token Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. By default "node\_modules" folder is ignored by transformers. Here's what you can do: • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it. • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript • To have some of your "node\_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. • If you need a custom transformation specify a "transform" option in your config. • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option. You'll find more details and examples of these config options in the docs: https://jestjs.io/docs/configuration For information about custom transformations, see: https://jestjs.io/docs/code-transformation

Note: I will be using Jest as testing framework throughout the examples.

We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!

Jest has long been my favorite got to test runner when it comes to UI unit and integration testing. With tools like React Testing Library (Testing Library framework for React) you get the benefit of very easy to write and maintain tests, as well as a quick and efficient way to run our tests.

Jest is a well-regarded JavaScript testing framework primarily designed for React applications, although its utility extends to projects using Babel, JavaScript, Node, Angular, and Vue. Created by Facebook, Jest emphasizes ensuring the correctness of JavaScript codebases. It allows developers to write tests with a familiar, feature-rich API, making the testing process swift and enjoyable​​.