From 69aee430b3f0856c4ba1c30c63f0b04ea440e419 Mon Sep 17 00:00:00 2001
From: Jon Uhlmann <me@jonnitto.ch>
Date: Sun, 1 Aug 2021 02:16:35 +0200
Subject: [PATCH] Fix: Get size of source map

---
 postcss.mjs | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/postcss.mjs b/postcss.mjs
index cd26b0d..24e07c4 100644
--- a/postcss.mjs
+++ b/postcss.mjs
@@ -180,11 +180,15 @@ function css(css, file, time) {
                         if (result.map) {
                             const file = `${to}.map`;
                             const map = result.map.toString();
-                            tasks.push(fs.outputFile(file, map));
-                            if (!watch && index === 0) {
-                                const size = fs.statSync(file)?.size;
-                                mapFilesize = humanFileSize(size);
-                            }
+                            tasks.push(
+                                fs.outputFile(file, map, () => {
+                                    if (!watch && index === 0) {
+                                        const size = fs.statSync(file)?.size;
+                                        mapFilesize = humanFileSize(size);
+                                    }
+                                })
+                            );
+
                             if (compression) {
                                 tasks.push(writeGz(file, map));
                                 tasks.push(writeBr(file, map));