Package Exports

goober

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Readme

goober

🥜 goober, a 900B css-in-js solution.

Motivation

I always wondered, if you can get a working solution for css-in-js with a smaller footprint. I started a project and wanted a to use styled-components. Looking at their sizes, it seems that I would rather not include ~16kB(styled-components) or ~11kB(emotion) just so I can use the styled paradigm. So, I embarked in a mission to create a smaller alternative for these well established apis.

Usage

The API is inspired by emotion, styled function. Meaning, you call it with your tagName and returns a vDOM component for that tag.

import { styled } from "goober";

const Icon = styled("i")`
  display: flex;
  flex: 1;
  color: red;
`;

const Button = styled("button")`
  background: dodgerblue;
  color: white;
  border: 0;

  &:focus,
  &:hover {
    padding: 1em;
  }

  .otherClass {
    margin: 0;
  }

  ${Icon} {
    color: black;
  }
`;

Examples

SSR

You can get the critical CSS for SSR, via extractCss. Take a look at this example: CodeSandbox: SSR with Preact and goober

API

As you can see it supports most of the syntaxes of CSS. If you find any issues, please submit a ticket or even a PR with a fix.

styled(tagName)

@param {String} tagName The name of the dom element you'd like the styled to be applied to
@returns {Function} Returns the tag template function.

import { styled } from "goober";

const Btn = styled("button")`
  border-radius: 4px;
`;

css Same as styled but without the tagName and vNode generation. In the end the output will be a className.

@returns {Function} Returns the tag template function.

import { css } from "goober";

const BtnClassName = css`
  border-radius: 4px;
`();
// (!) Note the empty param at the end. If you wanna use `props` throughout the syntax this is the place to put them

const btn = document.querySelector("#btn");
btn.classList.add(BtnClassName);

extractCss()

@returns {String} Returns the <style> tag should be rendered in your document <head>.

const { extractCss } = require("goober");

// After your app has rendered, just call it:
const styleTag  = extractCss();

Features

Basic CSS parsing
Nested rules with pseudo selectors
Nested styled components
Media queries (@media)
Keyframes (@keyframes)
Smart(lazy) client-side hydration
globalStyle so one would be able to create global styles
Vendor prefixing
Vanilla(via css function)

Contributing

Feel free to try it out and checkout the examples. If you wanna fix something feel free to open a issue or a PR.