Function boundVal

src/components/legend/style.js:183–196

(attrIn, arrayToValFn, bounds, cst)

        // use d0.trace to infer arrayOk attributes

        function boundVal(attrIn, arrayToValFn, bounds, cst) {
            var valIn = Lib.nestedProperty(trace, attrIn).get();
            var valToBound = Lib.isArrayOrTypedArray(valIn) && arrayToValFn ? arrayToValFn(valIn) : valIn;

            if (constantItemSizing && valToBound && cst !== undefined) {
                valToBound = cst;
            }

            if (bounds) {
                if (valToBound < bounds[0]) return bounds[0];
                else if (valToBound > bounds[1]) return bounds[1];
            }
            return valToBound;
        }

        function pickFirst(array) {
            if (d0._distinct && d0.index && array[d0.index]) return array[d0.index];