mongodb-js · DarshanaVenkatesh · Aug 21, 2025 · Aug 20, 2025 · Aug 20, 2025 · Aug 20, 2025
diff --git a/package-lock.json b/package-lock.json
diff --git a/packages/mongodb-constants/package.json b/packages/mongodb-constants/package.json
@@ -51,6 +51,9 @@
     "test-ci": "npm run test-cov",
     "reformat": "npm run prettier -- --write ."
   },
+  "peerDependencies": {
+    "bson": "^6.10.3"
+  },
   "devDependencies": {
     "@mongodb-js/eslint-config-devtools": "0.9.11",
     "@mongodb-js/mocha-config-devtools": "^1.0.5",
@@ -60,6 +63,7 @@
     "@types/mocha": "^9.1.1",
     "@types/semver": "^7.7.0",
     "@types/sinon-chai": "^3.2.5",
+    "bson": "^6.10.3",
     "acorn": "^8.14.1",
     "chai": "^4.5.0",
     "depcheck": "^1.4.7",

diff --git a/packages/mongodb-constants/src/index.spec.ts b/packages/mongodb-constants/src/index.spec.ts
@@ -32,6 +32,7 @@ describe('constants', function () {
       'VALIDATION_TEMPLATE',
       'ATLAS_SEARCH_TEMPLATES',
       'ATLAS_VECTOR_SEARCH_TEMPLATE',
+      'VIEW_PIPELINE_UTILS',
     ]);
   });
 });
diff --git a/packages/mongodb-constants/src/index.ts b/packages/mongodb-constants/src/index.ts
@@ -16,3 +16,4 @@ export type {
   FilterOptions as CompletionFilterOptions,
 } from './filter';
 export * from './atlas-search-templates';
+export * from './views';
diff --git a/packages/mongodb-constants/src/views.spec.ts b/packages/mongodb-constants/src/views.spec.ts
@@ -0,0 +1,175 @@
+import { expect } from 'chai';
+import { VIEW_PIPELINE_UTILS } from './views';
+import type { Document } from 'bson';
+
+describe('views', function () {
+  describe('isPipelineSearchQueryable', function () {
+    it('should return true for a valid pipeline with $addFields stage', function () {
+      const pipeline: Document[] = [{ $addFields: { testField: 'testValue' } }];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        true,
+      );
+    });
+
+    it('should return true for a valid pipeline with $set stage', function () {
+      const pipeline: Document[] = [{ $set: { testField: 'testValue' } }];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        true,
+      );
+    });
+
+    it('should return true for a valid pipeline with $match stage using $expr', function () {
+      const pipeline: Document[] = [
+        { $match: { $expr: { $eq: ['$field', 'value'] } } },
+      ];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        true,
+      );
+    });
+
+    it('should return false for a pipeline with an unsupported stage', function () {
+      const pipeline: Document[] = [{ $group: { _id: '$field' } }];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        false,
+      );
+    });
+
+    it('should return false for a $match stage without $expr', function () {
+      const pipeline: Document[] = [{ $match: { nonExprKey: 'someValue' } }];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        false,
+      );
+    });
+
+    it('should return false for a $match stage with $expr and additional fields', function () {
+      const pipeline: Document[] = [
+        {
+          $match: {
+            $expr: { $eq: ['$field', 'value'] },
+            anotherField: 'value',
+          },
+        },
+      ];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        false,
+      );
+    });
+
+    it('should return true for an empty pipeline', function () {
+      const pipeline: Document[] = [];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        true,
+      );
+    });
+
+    it('should return false if any stage in the pipeline is invalid', function () {
+      const pipeline: Document[] = [
+        { $addFields: { testField: 'testValue' } },
+        { $match: { $expr: { $eq: ['$field', 'value'] } } },
+        { $group: { _id: '$field' } },
+      ];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        false,
+      );
+    });
+
+    it('should handle a pipeline with multiple valid stages', function () {
+      const pipeline: Document[] = [
+        { $addFields: { field1: 'value1' } },
+        { $match: { $expr: { $eq: ['$field', 'value'] } } },
+        { $set: { field2: 'value2' } },
+      ];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        true,
+      );
+    });
+
+    it('should return false for a $match stage with no conditions', function () {
+      const pipeline: Document[] = [{ $match: {} }];
+      expect(VIEW_PIPELINE_UTILS.isPipelineSearchQueryable(pipeline)).to.equal(
+        false,
+      );
+    });
+  });
+
+  describe('isVersionSearchCompatibleForViewsDataExplorer', function () {
+    it('should return true for a version greater than or equal to 8.0.0', function () {
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(
+          '8.0.0',
+        ),
+      ).to.equal(true);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(
+          '8.0.1',
+        ),
+      ).to.equal(true);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(
+          '8.1.0',
+        ),
+      ).to.equal(true);
+    });
+
+    it('should return false for a version less than 8.0.0', function () {
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(
+          '7.9.9',
+        ),
+      ).to.equal(false);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(
+          '7.0.0',
+        ),
+      ).to.equal(false);
+    });
+
+    it('should handle invalid version format by returning false', function () {
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(
+          'invalid-version',
+        ),
+      ).to.equal(false);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsDataExplorer(''),
+      ).to.equal(false);
+    });
+  });
+
+  describe('isVersionSearchCompatibleForViewsCompass', function () {
+    it('should return true for a version greater than or equal to 8.1.0', function () {
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass('8.1.0'),
+      ).to.equal(true);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass('8.1.1'),
+      ).to.equal(true);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass('8.2.0'),
+      ).to.equal(true);
+    });
+
+    it('should return false for a version less than 8.1.0', function () {
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass('8.0.9'),
+      ).to.equal(false);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass('8.0.0'),
+      ).to.equal(false);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass('7.9.9'),
+      ).to.equal(false);
+    });
+
+    it('should handle invalid version format by returning false', function () {
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass(
+          'invalid-version',
+        ),
+      ).to.equal(false);
+      expect(
+        VIEW_PIPELINE_UTILS.isVersionSearchCompatibleForViewsCompass(''),
+      ).to.equal(false);
+    });
+  });
+});
diff --git a/packages/mongodb-constants/src/views.ts b/packages/mongodb-constants/src/views.ts
@@ -0,0 +1,89 @@
+/** utils related to view pipeline **/
+
+import type { Document } from 'bson';
+import semver from 'semver';
+
+const MIN_VERSION_FOR_VIEW_SEARCH_COMPATIBILITY_DE = '8.0.0';
+const MIN_VERSION_FOR_VIEW_SEARCH_COMPATIBILITY_COMPASS = '8.1.0';
+
+/**
+ * A view pipeline is searchQueryable (ie: a search index can be created on view) if
+ * a pipeline consists of only addFields, set and match with expr stages
+ *
+ * @param pipeline the view pipeline
+ * @returns whether pipeline is search queryable
+ */
+const isPipelineSearchQueryable = (pipeline: Document[]): boolean => {
+  for (const stage of pipeline) {
+    const stageKey = Object.keys(stage)[0];
+
+    // Check if the stage is $addFields, $set, or $match
+    if (
+      !(
+        stageKey === '$addFields' ||
+        stageKey === '$set' ||
+        stageKey === '$match'
+      )
+    ) {
+      return false;
+    }
+
+    // If the stage is $match, check if it uses $expr
+    if (stageKey === '$match') {
+      const matchStage = stage['$match'] as Document;
+      const matchKeys = Object.keys(matchStage || {});
+
+      if (matchKeys.length !== 1 || !matchKeys.includes('$expr')) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+};
+
+/**
+ * Views allow search indexes to be made on them in DE for server version 8.1+
+ *
+ * @param serverVersion the server version
+ * @returns whether serverVersion is search compatible for views in DE
+ */
+const isVersionSearchCompatibleForViewsDataExplorer = (
+  serverVersion: string,
+): boolean => {
+  try {
+    return semver.gte(
+      serverVersion,
+      MIN_VERSION_FOR_VIEW_SEARCH_COMPATIBILITY_DE,
+    );
+  } catch {
+    return false;
+  }
+};
+
+/**
+ * Views allow search indexes to be made on them in compass for mongodb version 8.0+
+ *
+ * @param serverVersion the server version
+ * @returns whether serverVersion is search compatible for views in Compass
+ */
+const isVersionSearchCompatibleForViewsCompass = (
+  serverVersion: string,
+): boolean => {
+  try {
+    return semver.gte(
+      serverVersion,
+      MIN_VERSION_FOR_VIEW_SEARCH_COMPATIBILITY_COMPASS,
+    );
+  } catch {
+    return false;
+  }
+};
+
+export const VIEW_PIPELINE_UTILS = {
+  MIN_VERSION_FOR_VIEW_SEARCH_COMPATIBILITY_DE,
+  MIN_VERSION_FOR_VIEW_SEARCH_COMPATIBILITY_COMPASS,
+  isPipelineSearchQueryable,
+  isVersionSearchCompatibleForViewsDataExplorer,
+  isVersionSearchCompatibleForViewsCompass,
+};