Commit

node_modules/mongoose/lib/helpers/document/getDeepestSubdocumentForPath.js

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+'use strict';
+
+/**
+ * Find the deepest subdocument along a given path to ensure setter functions run
+ * with the correct subdocument as `this`. If no subdocuments, returns the top-level
+ * document.
+ *
+ * @param {Document} doc
+ * @param {String[]} parts
+ * @param {Schema} schema
+ * @returns Document
+ */
+
+module.exports = function getDeepestSubdocumentForPath(doc, parts, schema) {
+  let curPath = parts[0];
+  let curSchema = schema;
+  let subdoc = doc;
+  for (let i = 0; i < parts.length - 1; ++i) {
+    const curSchemaType = curSchema.path(curPath);
+    if (curSchemaType && curSchemaType.schema) {
+      let newSubdoc = subdoc.get(curPath);
+      curSchema = curSchemaType.schema;
+      curPath = parts[i + 1];
+      if (Array.isArray(newSubdoc) && !isNaN(curPath)) {
+        newSubdoc = newSubdoc[curPath];
+        curPath = '';
+      }
+      if (newSubdoc == null) {
+        break;
+      }
+      subdoc = newSubdoc;
+    } else {
+      curPath += curPath.length ? '.' + parts[i + 1] : parts[i + 1];
+    }
+  }
+
+  return subdoc;
+};