add hw2

node_modules/@iconify/utils/lib/icon-set/get-icons.js

@@ -0,0 +1,38 @@
+import { defaultIconDimensions } from "../icon/defaults.js";
+import { getIconsTree } from "./tree.js";
+
+/**
+* Optional properties that must be copied when copying icon set
+*/
+const propsToCopy = Object.keys(defaultIconDimensions).concat(["provider"]);
+/**
+* Extract icons from icon set
+*/
+function getIcons(data, names, not_found) {
+	const icons = Object.create(null);
+	const aliases = Object.create(null);
+	const result = {
+		prefix: data.prefix,
+		icons
+	};
+	const sourceIcons = data.icons;
+	const sourceAliases = data.aliases || Object.create(null);
+	if (data.lastModified) result.lastModified = data.lastModified;
+	const tree = getIconsTree(data, names);
+	let empty = true;
+	for (const name in tree) if (!tree[name]) {
+		if (not_found && names.indexOf(name) !== -1) (result.not_found || (result.not_found = [])).push(name);
+	} else if (sourceIcons[name]) {
+		icons[name] = { ...sourceIcons[name] };
+		empty = false;
+	} else {
+		aliases[name] = { ...sourceAliases[name] };
+		result.aliases = aliases;
+	}
+	propsToCopy.forEach((attr) => {
+		if (attr in data) result[attr] = data[attr];
+	});
+	return empty && not_found !== true ? null : result;
+}
+
+export { getIcons, propsToCopy };