ant-design-vue/components/tag/CheckableTag.jsx

export default {
  name: 'ACheckableTag',
  model: {
    prop: 'checked',
  },
  props: {
    prefixCls: {
      default: 'ant-tag',
      type: String,
    },
    checked: Boolean,
  },
  computed: {
    classes() {
      const { prefixCls, checked } = this;
      return {
        [`${prefixCls}`]: true,
        [`${prefixCls}-checkable`]: true,
        [`${prefixCls}-checkable-checked`]: checked,
      };
    },
  },
  methods: {
    handleClick() {
      const { checked } = this;
      this.$emit('input', !checked);
      this.$emit('change', !checked);
    },
  },
  render() {
    const { classes, handleClick, $slots } = this;
    return (
      <div class={classes} onClick={handleClick}>
        {$slots.default}
      </div>
    );
  },
};