React form complication 4

wrap.js

export const wrap = (state, WrappedComponent) =>
  class extends React.Component {
    foos = {}
    state = state || {}

    set = e => {
      this.setState({ [e.target.name]: e.target.value })
    };

    componentWillMount() {
      for (var i in this.state) {
        if (typeof this.state[i] === "function")
          this.foos[i] = state[i].bind(null, this)
      }
    }

    render() {
      return (
        <WrappedComponent {...this.props} {...this.state} {...this.foos} set={this.set} />
      )
    }
  }