react-extras/dist/class-names.js

Useful components and utilities for working with React

// From https://github.com/sindresorhus/class-names/blob/master/index.js
// Bundled because of Create React App…
'use strict';

module.exports = (...args) => {
  const ret = new Set();

  for (const item of args) {
    const type = typeof item;

    if (type === 'string' && item.length > 0) {
      ret.add(item);
    } else if (type === 'object' && item !== null) {
      for (const [key, value] of Object.entries(item)) {
        if (value) {
          ret.add(key);
        }
      }
    }
  }

  return [...ret].join(' ');
};