reactstrap/src/Button.js

import React, { useCallback } from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import { mapToCssModules, tagPropType } from './utils';
import CloseButton from './CloseButton';

const propTypes = {
  /** Manually set the visual state of the button to active */
  active: PropTypes.bool,
  /** Aria label */
  'aria-label': PropTypes.string,
  block: PropTypes.bool,
  /** Pass children so this component can wrap them */
  children: PropTypes.node,
  /** Add custom class */
  className: PropTypes.string,
  /** Change existing className with a new className */
  cssModule: PropTypes.object,
  /** Use the button as a close button */
  close: PropTypes.bool,
  /** Change color of Button to one of the available colors */
  color: PropTypes.string,
  /** Disables the button */
  disabled: PropTypes.bool,
  innerRef: PropTypes.oneOfType([
    PropTypes.object,
    PropTypes.func,
    PropTypes.string,
  ]),
  /** Function to be triggered on click */
  onClick: PropTypes.func,
  /** Adds outline to the button */
  outline: PropTypes.bool,
  /** Make the button bigger or smaller */
  size: PropTypes.string,
  /** Set a custom element for this component */
  tag: tagPropType,
};

function Button(props) {
  const onClick = useCallback(
    (e) => {
      if (props.disabled) {
        e.preventDefault();
        return;
      }

      if (props.onClick) {
        return props.onClick(e);
      }
    },
    [props.onClick, props.disabled],
  );

  let {
    active,
    'aria-label': ariaLabel,
    block,
    className,
    close,
    cssModule,
    color = 'secondary',
    outline,
    size,
    tag: Tag = 'button',
    innerRef,
    ...attributes
  } = props;

  if (close) {
    return <CloseButton {...attributes} />;
  }

  const btnOutlineColor = `btn${outline ? '-outline' : ''}-${color}`;

  const classes = mapToCssModules(
    classNames(
      className,
      'btn',
      btnOutlineColor,
      size ? `btn-${size}` : false,
      block ? 'd-block w-100' : false,
      { active, disabled: props.disabled },
    ),
    cssModule,
  );

  if (attributes.href && Tag === 'button') {
    Tag = 'a';
  }

  return (
    <Tag
      type={Tag === 'button' && attributes.onClick ? 'button' : undefined}
      {...attributes}
      className={classes}
      ref={innerRef}
      onClick={onClick}
      aria-label={ariaLabel}
    />
  );
}

Button.propTypes = propTypes;

export default Button;