code: function handleStart(context) {
  
      var resizeConstraints = context.resizeConstraints,
          // evaluate minBounds for backwards compatibility
          minBounds = context.minBounds;
  
      if (resizeConstraints !== undefined) {
        return;
      }
  
      if (minBounds === undefined) {
        minBounds = self.computeMinResizeBox(context);
      }
  
      context.resizeConstraints = {
        min: asTRBL(minBounds)
      };
    }
docs: Handle resize start.
  
  @param  {Object} context