fix(gatsby-source-mongodb): work with _id types that are not O… (#16331)

gatsbyjs · Aug 8, 2019 · d226fd5 · d226fd5
1 parent 37c7389
commit d226fd5
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/packages/gatsby-source-mongodb/src/gatsby-node.js b/packages/gatsby-source-mongodb/src/gatsby-node.js
@@ -66,6 +66,10 @@ exports.sourceNodes = (
     })
 }
 
+function idToString(id) {
+  return id.hasOwnProperty(`toHexString`) ? id.toHexString() : String(id)
+}
+
 function createNodes(
   db,
   pluginOptions,
@@ -87,7 +91,7 @@ function createNodes(
       }
 
       documents.forEach(({ _id, ...item }) => {
-        const id = _id.toHexString()
+        const id = idToString(_id)
 
         // only call recursive function to preserve relations represented by objectids if pluginoption set.
         if (preserveObjectIds) {