Add missing generate-jdenticon module

src/lib/generate-jdenticon.js

@@ -0,0 +1,49 @@
+"use strict";
+
+const jdenticon = require("jdenticon");
+const defaultValue = require("default-value");
+
+module.exports = function generateJdenticon(name) {
+	function setConfig() {
+		/* NOTE: This is a hack to ensure that any other code using the `jdenticon` library can't mess with our config, since it's set globally. This function gets called prior to *every* jdenticon-generating operation. */
+		jdenticon.config = {
+			lightness: {
+				color: [0.58, 0.66],
+				grayscale: [0.30, 0.90]
+			},
+			saturation: {
+				color: 0.66,
+				grayscale: 0.00
+			},
+			backColor: "#00000000"
+		};
+	}
+
+	return {
+		toSvg: function (size) {
+			setConfig();
+
+			return jdenticon.toSvg(name, size);
+		},
+		primaryColor: function () {
+			let svg = this.toSvg();
+
+			let color = svg.match(/#([a-f0-9]{6})/g).find((candidate) => {
+				let r = candidate.substr(1, 2);
+				let g = candidate.substr(3, 2);
+				let b = candidate.substr(5, 2);
+
+				let isGrayScale = (r === g && g === b);
+
+				return !isGrayScale;
+			});
+			
+			return defaultValue(color, "#ff0000");
+		},
+		update: function (element) {
+			setConfig();
+
+			jdenticon.update(element, name);
+		}
+	}
+};