From 402c6ed7ba89d36a0c81e87f3ddecc608fe8fe99 Mon Sep 17 00:00:00 2001
From: silverwind <me@silverwind.io>
Date: Wed, 28 Nov 2018 00:41:13 +0100
Subject: [PATCH] remove chalk dependency

---
 package.json |  1 -
 updates.js   | 15 ++++++++++-----
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/package.json b/package.json
index b05de7a..602660e 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,6 @@
     "updates.js"
   ],
   "dependencies": {
-    "chalk": "2.4.1",
     "escape-string-regexp": "1.0.5",
     "find-up": "3.0.0",
     "hosted-git-info": "^2.7.1",
diff --git a/updates.js b/updates.js
index 95b40ae..d51e6f4 100755
--- a/updates.js
+++ b/updates.js
@@ -80,8 +80,14 @@ if (args.version) {
   process.exit(0);
 }
 
-if (args["color"]) process.env.FORCE_COLOR = "1";
-if (args["no-color"]) process.env.FORCE_COLOR = "0";
+let useColor = Boolean(process.stdout.isTTY);
+if (args["color"]) useColor = true;
+if (args["no-color"]) useColor = false;
+
+const colors = {
+  green: str => useColor ? `\x1b[0;32m${str}\x1b[0m` : str,
+  red: str => useColor ? `\x1b[0;31m${str}\x1b[0m` : str,
+};
 
 const greatest = parseMixedArg(args.greatest);
 const prerelease = parseMixedArg(args.prerelease);
@@ -167,7 +173,6 @@ if (!Object.keys(deps).length) {
 
 const fetch = require("make-fetch-happen");
 const esc = require("escape-string-regexp");
-const chalk = require("chalk");
 const hostedGitInfo = require("hosted-git-info");
 
 const get = async name => {
@@ -224,7 +229,7 @@ Promise.all(Object.keys(deps).map(name => get(name))).then(dati => {
  │  package.json updated  │
  ╰────────────────────────╯`;
 
-  finish(chalk.green(msg.substring(1)));
+  finish(colors.green(msg.substring(1)));
 }).catch(finish);
 
 function finish(obj, opts) {
@@ -262,7 +267,7 @@ function finish(obj, opts) {
 function highlightDiff(a, b, added) {
   const aParts = a.split(/\./);
   const bParts = b.split(/\./);
-  const color = chalk[added ? "green" : "red"];
+  const color = colors[added ? "green" : "red"];
   const versionPartRe = /^[0-9a-zA-Z-.]+$/;
   let res = "";