From 6cc430013a052dc2488b9e6700a1e4bd8c8e0680 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mateusz=20Burzy=C5=84ski?= <mateuszburzynski@gmail.com>
Date: Mon, 31 Oct 2022 14:12:45 +0100
Subject: [PATCH] Improved compatibility with Prettier v3 (alpha) (#983)

---
 .changeset/heavy-geckos-lick.md          | 6 ++++++
 packages/apply-release-plan/src/index.ts | 3 ++-
 packages/write/src/index.ts              | 3 ++-
 3 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/heavy-geckos-lick.md

diff --git a/.changeset/heavy-geckos-lick.md b/.changeset/heavy-geckos-lick.md
new file mode 100644
index 000000000..95c6b1712
--- /dev/null
+++ b/.changeset/heavy-geckos-lick.md
@@ -0,0 +1,6 @@
+---
+"@changesets/apply-release-plan": patch
+"@changesets/write": patch
+---
+
+Improved compatibility with the alpha releases of Prettier v3 by awaiting the `.format` result since it's a promise in that version.
diff --git a/packages/apply-release-plan/src/index.ts b/packages/apply-release-plan/src/index.ts
index 18132cd3f..432da8245 100644
--- a/packages/apply-release-plan/src/index.ts
+++ b/packages/apply-release-plan/src/index.ts
@@ -350,7 +350,8 @@ async function writeFormattedMarkdownFile(
 ) {
   await fs.writeFile(
     filePath,
-    prettierInstance.format(content, {
+    // Prettier v3 returns a promise
+    await prettierInstance.format(content, {
       ...prettierConfig,
       filepath: filePath,
       parser: "markdown",
diff --git a/packages/write/src/index.ts b/packages/write/src/index.ts
index b9e2838c3..0fba55ac1 100644
--- a/packages/write/src/index.ts
+++ b/packages/write/src/index.ts
@@ -47,7 +47,8 @@ ${summary}
 
   await fs.writeFile(
     newChangesetPath,
-    prettierInstance.format(changesetContents, {
+    // Prettier v3 returns a promise
+    await prettierInstance.format(changesetContents, {
       ...prettierConfig,
       parser: "markdown",
     })