ant-design/components/slider/index.tsx

import React from 'react';
import RcSlider from 'rc-slider';
import splitObject from '../_util/splitObject';
export default class Slider extends React.Component {
  static defaultProps = {
    prefixCls: 'ant-slider',
    tipTransitionName: 'zoom-down',
  }

  render() {
    const [{isIncluded, marks, index, defaultIndex}, others] = splitObject(this.props,
      ['isIncluded', 'marks', 'index', 'defaultIndex']);
    
    if (isIncluded !== undefined) {
      // 兼容 `isIncluded`
      others.included = isIncluded;
    }

    if (Array.isArray(marks)) {
      // 兼容当 marks 为数组的情况
      others.min = 0;
      others.max = marks.length - 1;
      others.step = 1;

      if (index !== undefined) {
        others.value = index;
      }
      if (defaultIndex !== undefined) {
        others.defaultValue = defaultIndex;
      }

      others.marks = {};
      marks.forEach((val, idx) => {
        others.marks[idx] = val;
      });
    } else {
      others.marks = marks;
    }

    return <RcSlider {...others} />;
  }
}