Attempt at creating a simple css-in-js lib

See filename lib/styled.js for the implementation and example/src/App.js for an example usage.

External dependencies used:

• hash-sum
• stylis

Usage with variables

import styled from "lib/styled";
const primaryColor = "white";
const secondaryColor = "red";
const padding = "10px 20px";
const AnotherButton = styled.button`
  background-color: ${secondaryColor};
  padding: ${padding};
  color: ${primaryColor};
`;

Usage with styled-system

import styled from "lib/styled";
import { color } from "styled-system";
const Button = styled.button`
  background-color: blue;
  padding: 10px 20px;
  ${color}
`;
<Button color="red" disabled>
  This is styled button
</Button>;

Usage with custom function which returns CSS

import styled from "lib/styled";
const Input = styled.input`
  padding: 10px 20px;
  background-color: ${props => (props.primary ? "red" : "palevioletred")};
  color: white;
`;
<Input type="text" primary />;

Usage with className property

import { css } from "lib/styled";
const bgColor = "black";
const containerCls = css`
  background-color: ${bgColor};
  width: 50px;
  height: 50px;
  color: white;
`;
<div className="{containerCls}">Content</div>;

or

import { css } from "lib/styled";
<div
  className={css`
    background-color: ${props.bgColor};
    width: 50px;
    height: 50px;
    color: white;
  `}
>

Extending components

const Input = styled.input`
  padding: 10px 20px;
  background-color: ${props => (props.primary ? "gray" : "palevioletred")};
  color: white;
`;
const AnotherInput = styled(Input)`
  background-color: yellow;
  color: green;
`;

TODO

• A bit of writeup