add-cms

source/admin/packages/decap-cms-widget-markdown/src/MarkdownControl/plugins/util.js

@@ -0,0 +1,12 @@
+import castArray from 'lodash/castArray';
+import isArray from 'lodash/isArray';
+
+export function assertType(nodes, type) {
+  const nodesArray = castArray(nodes);
+  const validate = isArray(type) ? node => type.includes(node.type) : node => type === node.type;
+  const invalidNode = nodesArray.find(node => !validate(node));
+  if (invalidNode) {
+    throw Error(`Expected node of type "${type}", received "${invalidNode.type}".`);
+  }
+  return true;
+}