Consolidate content node utilities into kolibri-common.

kolibri/core/assets/src/views/ExamReport/utils.js

@@ -1,6 +1,6 @@
 import has from 'lodash/has';
 import logger from 'kolibri.lib.logging';
-import { masteryModelValidator } from '../../utils/contentNodeUtils';
+import { masteryModelValidator } from 'kolibri-common/utils/contentNode';
 
 export const logging = logger.getLogger(__filename);
 

kolibri/core/assets/src/views/MasteryModel.vue

@@ -8,7 +8,7 @@
 <script>
 
   import { MasteryModelTypes } from 'kolibri.coreVue.vuex.constants';
-  import { masteryModelValidator } from '../utils/contentNodeUtils';
+  import { masteryModelValidator } from 'kolibri-common/utils/contentNode';
 
   export default {
     name: 'MasteryModel',

packages/kolibri-common/utils/contentNode.js

@@ -1,5 +1,6 @@
 import groupBy from 'lodash/groupBy';
 import sortBy from 'lodash/sortBy';
+import { MasteryModelTypes } from 'kolibri.coreVue.vuex.constants';
 import { getContentLangActive } from 'kolibri.utils.i18n';
 
 export function deduplicateResources(contentNodes) {
@@ -30,3 +31,21 @@ export function deduplicateResources(contentNodes) {
     return primaryNode;
   });
 }
+
+export function masteryModelValidator({ type, m, n }) {
+  let isValid = true;
+  const typeIsValid = Object.values(MasteryModelTypes).includes(type);
+  if (!typeIsValid) {
+    // eslint-disable-next-line no-console
+    console.error(`Invalid mastery model type: ${type}`);
+    isValid = false;
+  }
+  if (type === MasteryModelTypes.m_of_n) {
+    if (typeof n !== 'number' || typeof m !== 'number') {
+      // eslint-disable-next-line no-console
+      console.error(`Invalid value of m and/or n. m: ${m}, n: ${n}`);
+      isValid = false;
+    }
+  }
+  return isValid;
+}