add hw2

node_modules/@iconify/utils/lib/customisations/merge.js

@@ -0,0 +1,18 @@
+import { defaultIconSizeCustomisations } from "./defaults.js";
+
+/**
+* Convert IconifyIconCustomisations to FullIconCustomisations, checking value types
+*/
+function mergeCustomisations(defaults, item) {
+	const result = { ...defaults };
+	for (const key in item) {
+		const value = item[key];
+		const valueType = typeof value;
+		if (key in defaultIconSizeCustomisations) {
+			if (value === null || value && (valueType === "string" || valueType === "number")) result[key] = value;
+		} else if (valueType === typeof result[key]) result[key] = key === "rotate" ? value % 4 : value;
+	}
+	return result;
+}
+
+export { mergeCustomisations };