Function parseSubParameters

docs/tests/v2/es6/js/sanddance.js:135401–135416

* Parse a parameter that contains one or more sub-parameter objects.

(def, spec, scope)

function parseSubParameters(def, spec, scope) {
  var value = spec[def.name];

  if (def.array) {
    if (!(0, _vegaUtil.isArray)(value)) {
      // signals not allowed!
      (0, _vegaUtil.error)('Expected an array of sub-parameters. Instead: ' + (0, _vegaUtil.stringValue)(value));
    }

    return value.map(function (v) {
      return parseSubParameter(def, v, scope);
    });
  } else {
    return parseSubParameter(def, value, scope);
  }
}
/**
 * Parse a sub-parameter object.
 */