add hw2

node_modules/@iconify/utils/lib/css/format.js

@@ -0,0 +1,41 @@
+const format = {
+	selectorStart: {
+		compressed: "{",
+		compact: " {",
+		expanded: " {"
+	},
+	selectorEnd: {
+		compressed: "}",
+		compact: "; }\n",
+		expanded: ";\n}\n"
+	},
+	rule: {
+		compressed: "{key}:",
+		compact: " {key}: ",
+		expanded: "\n  {key}: "
+	}
+};
+/**
+* Format data
+*
+* Key is selector, value is list of rules
+*/
+function formatCSS(data, mode = "expanded") {
+	const results = [];
+	for (let i = 0; i < data.length; i++) {
+		const { selector, rules } = data[i];
+		const fullSelector = selector instanceof Array ? selector.join(mode === "compressed" ? "," : ", ") : selector;
+		let entry = fullSelector + format.selectorStart[mode];
+		let firstRule = true;
+		for (const key in rules) {
+			if (!firstRule) entry += ";";
+			entry += format.rule[mode].replace("{key}", key) + rules[key];
+			firstRule = false;
+		}
+		entry += format.selectorEnd[mode];
+		results.push(entry);
+	}
+	return results.join(mode === "compressed" ? "" : "\n");
+}
+
+export { formatCSS };