performEnter()

in src/Transition.js [224:253]

• 24 lines of code
• 7 McCabe index (conditional complexity)

  performEnter(mounting) {
    const { enter } = this.props;
    const appearing = this.context ? this.context.isMounting : mounting;
    const [maybeNode, maybeAppearing] = this.props.nodeRef
      ? [appearing]
      : [ReactDOM.findDOMNode(this), appearing];

    const timeouts = this.getTimeouts();
    const enterTimeout = appearing ? timeouts.appear : timeouts.enter;
    // no enter animation skip right to ENTERED
    // if we are mounting and running this it means appear _must_ be set
    if ((!mounting && !enter) || config.disabled) {
      this.safeSetState({ status: ENTERED }, () => {
        this.props.onEntered(maybeNode);
      });
      return;
    }

    this.props.onEnter(maybeNode, maybeAppearing);

    this.safeSetState({ status: ENTERING }, () => {
      this.props.onEntering(maybeNode, maybeAppearing);

      this.onTransitionEnd(enterTimeout, () => {
        this.safeSetState({ status: ENTERED }, () => {
          this.props.onEntered(maybeNode, maybeAppearing);
        });
      });
    });
  }