supports-color - npm Package Compare versions

Comparing version 2.0.0 to 3.0.0

index.js

 'use strict';
-var argv = process.argv;
+var hasFlag = require('has-flag');
 
-var terminator = argv.indexOf('--');
-var hasFlag = function (flag) {
-	flag = '--' + flag;
-	var pos = argv.indexOf(flag);
-	return pos !== -1 && (terminator !== -1 ? pos < terminator : true);
+var support = function (level) {
+	if (level === 0) {
+		return false;
+	}
+
+	return {
+		level: level,
+		hasBasic: true,
+		has256: level >= 2,
+		has16m: level >= 3
+	};
 };
 
-module.exports = (function () {
-	if ('FORCE_COLOR' in process.env) {
-		return true;
+var supportLevel = (function () {
+	if (hasFlag('color=16m') ||
+		hasFlag('color=full') ||
+		hasFlag('color=truecolor')) {
+		return 3;
 	}
 
-	if (hasFlag('no-color') ||
-		hasFlag('no-colors') ||
-		hasFlag('color=false')) {
-		return false;
+	if (hasFlag('color=256')) {
+		return 2;
 	}
@@ -26,26 +32,36 @@
 		hasFlag('color=always')) {
-		return true;
+		return 1;
 	}
 
 	if (process.stdout && !process.stdout.isTTY) {
-		return false;
+		return 0;
 	}
 
 	if (process.platform === 'win32') {
-		return true;
+		return 1;
 	}
 
 	if ('COLORTERM' in process.env) {
-		return true;
+		return 1;
 	}
 
 	if (process.env.TERM === 'dumb') {
-		return false;
+		return 0;
 	}
 
+	if (/^xterm-256(?:color)?/.test(process.env.TERM)) {
+		return 2;
+	}
+
 	if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
-		return true;
+		return 1;
 	}
 
-	return false;
+	return 0;
 })();
+
+if (supportLevel === 0 && 'FORCE_COLOR' in process.env) {
+	supportLevel = 1;
+}
+
+module.exports = support(supportLevel);

package.json

 {
   "name": "supports-color",
-  "version": "2.0.0",
+  "version": "3.0.0",
   "description": "Detect whether a terminal supports color",
@@ -14,3 +14,4 @@ "license": "MIT",
     "Sindre Sorhus <[e-mail]> (sindresorhus.com)",
-    "Joshua Appelman <[e-mail]> (jbnicolai.com)"
+    "Joshua Appelman <[e-mail]> (jbnicolai.com)",
+    "JD Ballard <[e-mail]> (github.com/qix-)"
   ],
@@ -46,2 +47,5 @@ "engines": {
   ],
+  "dependencies": {
+    "has-flag": "^1.0.0"
+  },
   "devDependencies": {
@@ -48,0 +52,0 @@ "mocha": "*",

readme.md

@@ -21,4 +21,26 @@ # supports-color [![Build Status](https://travis-ci.org/chalk/supports-color.svg?branch=master)](https://travis-ci.org/chalk/supports-color)
 }
+
+if (supportsColor.has256) {
+	console.log('Terminal supports 256 colors');
+}
+
+if (supportsColor.has16m) {
+	console.log('Terminal supports 16 million colors (truecolor)');
+}
 ```
 
+
+## API
+
+Returns an `object`, or `false` if color is not supported.
+
+The returned object specifies a level of support for color through a `.level` property and a corresponding flag:
+
+- `.level = 1` and `.hasBasic = true`: Basic color support (16 colors)
+- `.level = 2` and `.has256 = true`: 256 color support
+- `.level = 3` and `.has16m = true`: 16 million (truecolor) support
+
+
+## Info
+
 It obeys the `--color` and `--no-color` CLI flags.
@@ -28,3 +50,5 @@
 
+Explicit 256/truecolor mode can be enabled using the `--color=256` and `--color=16m` flags, respectively.
 
+
 ## Related
@@ -31,0 +55,0 @@

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 2 instances in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

4667

increased by24.52%

Lines of code

52

increased by30%

Number of lines in readme file

61

increased by64.86%

Worsened metrics

Dependency count

1

increased byInfinity%

Number of low supply chain risk alerts

6

increased by500%

Dependency changes

• + Addedhas-flag@^1.0.0

• + Addedhas-flag@1.0.0(transitive)