planning

node_modules/@mapbox/mapbox-gl-style-spec/util/properties.js

@@ -0,0 +1,15 @@
+// @flow
+
+import type {StylePropertySpecification} from '../style-spec.js';
+
+export function supportsPropertyExpression(spec: StylePropertySpecification): boolean {
+    return spec['property-type'] === 'data-driven';
+}
+
+export function supportsZoomExpression(spec: StylePropertySpecification): boolean {
+    return !!spec.expression && spec.expression.parameters.indexOf('zoom') > -1;
+}
+
+export function supportsInterpolation(spec: StylePropertySpecification): boolean {
+    return !!spec.expression && spec.expression.interpolated;
+}