From 6f9a2c9df70faa6ce0e6a49cee0f37db3e2b2033 Mon Sep 17 00:00:00 2001
From: Kevin Jahns <kevin.jahns@pm.me>
Date: Fri, 7 Aug 2020 17:47:20 +0200
Subject: [PATCH] implement before/afterAllTransactions

---
 README.md                | 4 ++++
 src/utils/Transaction.js | 4 ++++
 tests/y-text.tests.js    | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d859b7f5..09857eae 100644
--- a/README.md
+++ b/README.md
@@ -597,6 +597,10 @@ peers. You can apply document updates in any order and multiple times.
   <dd>Emitted before each transaction.</dd>
   <b><code>on('afterTransaction', function(Y.Transaction, Y.Doc):void)</code></b>
   <dd>Emitted after each transaction.</dd>
+  <b><code>on('beforeAllTransactions', function(Y.Doc):void)</code></b>
+  <dd>Transactions can be nested (e.g. when an event within a transaction calls another transaction). Emitted before the first transaction.</dd>
+  <b><code>on('afterAllTransactions', function(Y.Doc, Array&lt;Y.Transaction&gt;):void)</code></b>
+  <dd>Emitted after the last transaction is cleaned up.</dd>
 </dl>
 
 ### Document Updates
diff --git a/src/utils/Transaction.js b/src/utils/Transaction.js
index c09579e9..6be4e8ee 100644
--- a/src/utils/Transaction.js
+++ b/src/utils/Transaction.js
@@ -337,6 +337,7 @@ const cleanupTransactions = (transactionCleanups, i) => {
       }
       if (transactionCleanups.length <= i + 1) {
         doc._transactionCleanups = []
+        doc.emit('afterAllTransactions', [doc, transactionCleanups])
       } else {
         cleanupTransactions(transactionCleanups, i + 1)
       }
@@ -360,6 +361,9 @@ export const transact = (doc, f, origin = null, local = true) => {
     initialCall = true
     doc._transaction = new Transaction(doc, origin, local)
     transactionCleanups.push(doc._transaction)
+    if (transactionCleanups.length === 1) {
+      doc.emit('beforeAllTransactions', [doc])
+    }
     doc.emit('beforeTransaction', [doc._transaction, doc])
   }
   try {
diff --git a/tests/y-text.tests.js b/tests/y-text.tests.js
index a517e7c3..0083630d 100644
--- a/tests/y-text.tests.js
+++ b/tests/y-text.tests.js
@@ -293,7 +293,7 @@ const tryGc = () => {
  * @param {t.TestCase} tc
  */
 export const testLargeFragmentedDocument = tc => {
-  const itemsToInsert = 5000000
+  const itemsToInsert = 1000000
   let update = /** @type {any} */ (null)
   ;(() => {
     const doc1 = new Y.Doc()