Function extracTextFontSize

src/components/drawing/index.js:1269–1272

(d, trace)

}

function extracTextFontSize(d, trace) {
    var fontSize = d.ts || trace.textfont.size;
    return isNumeric(fontSize) && fontSize > 0 ? fontSize : 0;
}

// draw text at points
drawing.textPointStyle = function (s, trace, gd) {