Check the COLORTERM variable for 16M color support (#75)

jaens · sindresorhus · commit d6e08c83d0e2 · 2018-03-02T16:06:46.000+07:00
According to https://gist.github.com/XVilka/8346728#detection and empirical tests on Konsole, when `COLORTERM=truecolor`, 24-bit color support is guaranteed to work.
diff --git a/index.js b/index.js
@@ -88,6 +88,10 @@ function supportsColor(stream) {
 		return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;
 	}
 
+	if (env.COLORTERM === 'truecolor') {
+		return 3;
+	}
+
 	if ('TERM_PROGRAM' in env) {
 		const version = parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10);
 

Original file line number	Diff line number	Diff line change
`@@ -88,6 +88,10 @@ function supportsColor(stream) {`
`88`	`88`	`return /^(9\.(0[1-9]\d)\.\|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;`
`89`	`89`	`}`
`90`	`90`
	`91`	`+ if (env.COLORTERM === 'truecolor') {`
	`92`	`+ return 3;`
	`93`	`+ }`
	`94`	`+`
`91`	`95`	`if ('TERM_PROGRAM' in env) {`
`92`	`96`	`const version = parseInt((env.TERM_PROGRAM_VERSION \|\| '').split('.')[0], 10);`
`93`	`97`