From 583e09fe3a0dbdcfe958cc1ed89e554ec3a100e0 Mon Sep 17 00:00:00 2001
From: alexandercerutti <cerutti.alexander@gmail.com>
Date: Tue, 21 Aug 2018 14:57:01 +0200
Subject: [PATCH] Added isValidRGB function

---
 index.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/index.js b/index.js
index de19a63..3f9c74b 100644
--- a/index.js
+++ b/index.js
@@ -503,6 +503,24 @@ class Pass {
 	}
 }
 
+/**
+ * Checks if an rgb value is compliant with CSS-like syntax
+ *
+ * @function isValidRGB
+ * @params {String} value - string to analyze
+ * @returns {Boolean} True if valid rgb, false otherwise
+ */
+
+function isValidRGB(value) {
+	let rgb = value.match(/^rgb\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)/);
+
+	if (!rgb) {
+		return false;
+	}
+
+	return rgb.slice(1,4).every(v => Math.abs(Number(v)) <= 255);
+}
+
 /**
  * Converts a date to W3C Standard format
  *