Function scaleKey

docs/app/js/sanddance-app.js:129978–129986

(_)

    }
});
function scaleKey(_) {
    var t = _.type, d = "", n; // backwards compatibility pre Vega 5.
    if (t === (0, _vegaScale.Sequential)) return (0, _vegaScale.Sequential) + "-" + (0, _vegaScale.Linear);
    if (isContinuousColor(_)) {
        n = _.rawDomain ? _.rawDomain.length : _.domain ? _.domain.length + +(_.domainMid != null) : 0;
        d = n === 2 ? (0, _vegaScale.Sequential) + "-" : n === 3 ? (0, _vegaScale.Diverging) + "-" : "";
    }
    return (d + t || (0, _vegaScale.Linear)).toLowerCase();
}
function isContinuousColor(_) {
    const t = _.type;
    return (0, _vegaScale.isContinuous)(t) && t !== (0, _vegaScale.Time) && t !== (0, _vegaScale.UTC) && (_.scheme || _.range && _.range.length && _.range.every((0, _vegaUtil.isString)));