nl_tokens: Creates an hidden element with the purpose to calculate the sizes of elements and adds these elements to the body .
pl_tokens: function createMeasurementElement ( ) { const hiddenElement = document . createElement ( "div" ) ; hiddenElement . id = elementId ; // Styles to prevent unintended scrolling in Gutenberg. hiddenElement . style . position = "absolute" ; hiddenElement . style . left = "-9999em" ; hiddenElement . style . <mask> = 0 ; hiddenElement . style . height = 0 ; hiddenElement . style . overflow = "hidden" ; hiddenElement . style . fontFamily = "arial, sans-serif" ; hiddenElement . style . fontSize = "18px" ; hiddenElement . style . fontWeight = "400" ; document . body . appendChild ( hiddenElement ) ; return hiddenElement ; }