Final edits

Author: schmidt-sebastian

packages/firestore/src/lite/reference_impl.ts

@@ -128,12 +128,12 @@ export function getDoc<T>(
   return invokeBatchGetDocumentsRpc(datastore, [reference._key]).then(
     result => {
       hardAssert(result.length === 1, 'Expected a single document result');
-      const maybeDocument = result[0];
+      const document = result[0];
       return new DocumentSnapshot<T>(
         reference.firestore,
         userDataWriter,
         reference._key,
-        maybeDocument.isFoundDocument() ? maybeDocument : null,
+        document.isFoundDocument() ? document : null,
         reference._converter
       );
     }

packages/firestore/src/model/document.ts

@@ -23,6 +23,10 @@ import { ObjectValue } from './object_value';
 import { FieldPath } from './path';
 import { valueCompare } from './values';
 
+/**
+ * Whether the document represents an existing document, a document that is
+ * known to exist or a document whose state or existence is unknown.
+ */
 const enum DocumentType {
   /**
    * Represents the initial state of a MutableDocument when only the document

packages/firestore/src/model/mutation.ts

@@ -217,7 +217,7 @@ export abstract class Mutation {
 /**
  * Applies this mutation to the given document for the purposes of computing a
  * new remote document. If the input document doesn't match the expected state
- * (e.g. it is invalid or outdated), the document state may transition to
+ * (e.g. it is invalid or outdated), the document type may transition to
  * unknown.
  *
  * @param mutation - The mutation to apply.