Function coerce

src/traces/bar/layout_defaults.js:12–14

(attr, dflt)

module.exports = function(layoutIn, layoutOut, fullData) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }

    var hasBars = false;
    var shouldBeGapless = false;