Method componentDidMount

src/with-content-rect.js:41–54

()

      _window = null

      componentDidMount() {
        this._resizeObserver = (this._window !== null && this._window.ResizeObserver)
          ? new this._window.ResizeObserver(this.measure)
          : new ResizeObserver(this.measure);
        if (this._node !== null) {
          this._resizeObserver.observe(this._node)

          if (typeof this.props.onResize === 'function') {
            this.props.onResize(
              getContentRect(this._node, types || getTypes(this.props))
            )
          }
        }
      }

      componentWillUnmount() {
        if (this._window !== null) {