writeToBuffer increases RSS size till OOMKilled about wasm-vips HOT 3 CLOSED

--- a/handle-multi-image.mjs
+++ b/handle-multi-image.mjs
@@ -12,6 +12,10 @@ function log(msg) {
   console.log(msg, "\n" + JSON.stringify(obj, null, 4) + "\n");
 }
 
+const vips = await Vips();
+vips.concurrency(1);
+vips.Cache.max(0);
+
 async function createMultiPageImage(buffer, op, ...params) {
   const buffers = [];
   const { pages: pageCount } = await sharp(buffer, { pages: -1 }).metadata();
@@ -31,10 +35,6 @@ async function createMultiPageImage(buffer, op, ...params) {
     }
   }
 
-  const vips = await Vips();
-  vips.concurrency(1);
-  vips.Cache.max(0);
-
   const vipsPages = pages.map((page) => vips.Image.newFromBuffer(page, "", { access: vips.Access.sequential }));
   const vipsImage = vips.Image.arrayjoin(vipsPages, { across: 1 });
 
@@ -44,7 +44,6 @@ async function createMultiPageImage(buffer, op, ...params) {
 
   vipsPages.map((vipsPage) => vipsPage.delete());
   vipsImage.delete();
-  vips.shutdown();
 
   return Buffer.from(vipsBuffer);
 }