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authorRuben Bridgewater <ruben@bridgewater.de>2018-05-06 23:10:23 +0200
committerRuben Bridgewater <ruben@bridgewater.de>2018-05-18 15:25:41 +0200
commitd478e52fe0bc396c8e65baf0861553a0d3de99db (patch)
treec569cdafa3ff48fb85e77c6e871b082825c86441 /lib/internal/tty.js
parent2bfba0dd339d1480e1b5caa64f28e330147845b9 (diff)
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os: lazy loaded
PR-URL: https://github.com/nodejs/node/pull/20567 Reviewed-By: Gus Caplan <me@gus.host> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Diffstat (limited to 'lib/internal/tty.js')
-rw-r--r--lib/internal/tty.js9
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/internal/tty.js b/lib/internal/tty.js
index c4edab24fb..1e60909f66 100644
--- a/lib/internal/tty.js
+++ b/lib/internal/tty.js
@@ -22,9 +22,7 @@
'use strict';
-const { release } = require('os');
-
-const OSRelease = release().split('.');
+let OSRelease;
const COLORS_2 = 1;
const COLORS_16 = 4;
@@ -75,6 +73,11 @@ function getColorDepth(env = process.env) {
}
if (process.platform === 'win32') {
+ // Lazy load for startup performance.
+ if (OSRelease === undefined) {
+ const { release } = require('os');
+ OSRelease = release().split('.');
+ }
// Windows 10 build 10586 is the first Windows release that supports 256
// colors. Windows 10 build 14931 is the first release that supports
// 16m/TrueColor.