add hw2

node_modules/@iconify/utils/lib/loader/fs.js

@@ -0,0 +1,57 @@
+import { tryInstallPkg } from "./install-pkg.js";
+import { promises } from "fs";
+import { importModule } from "local-pkg";
+import { resolvePath } from "mlly";
+
+const _collections = Object.create(null);
+const isLegacyExists = Object.create(null);
+/**
+* Asynchronously loads a collection from the file system.
+*
+* @param name {string} the name of the collection, e.g. 'mdi'
+* @param autoInstall {AutoInstall} [autoInstall=false] - whether to automatically install
+* @param scope {string} [scope='@iconify-json'] - the scope of the collection, e.g. '@my-company-json'
+* @return {Promise<IconifyJSON | undefined>} the loaded IconifyJSON or undefined
+*/
+async function loadCollectionFromFS(name, autoInstall = false, scope = "@iconify-json", cwd = process.cwd()) {
+	const cache = _collections[cwd] || (_collections[cwd] = Object.create(null));
+	if (!await cache[name]) cache[name] = task();
+	return cache[name];
+	async function task() {
+		const packageName = scope.length === 0 ? name : `${scope}/${name}`;
+		let jsonPath = await resolvePath(`${packageName}/icons.json`, { url: cwd }).catch(() => void 0);
+		if (scope === "@iconify-json") {
+			if (isLegacyExists[cwd] === void 0) {
+				const testResult = await resolvePath(`@iconify/json/collections.json`, { url: cwd }).catch(() => void 0);
+				isLegacyExists[cwd] = !!testResult;
+			}
+			const checkLegacy = isLegacyExists[cwd];
+			if (!jsonPath && checkLegacy) jsonPath = await resolvePath(`@iconify/json/json/${name}.json`, { url: cwd }).catch(() => void 0);
+			if (!jsonPath && !checkLegacy && autoInstall) {
+				await tryInstallPkg(packageName, autoInstall);
+				jsonPath = await resolvePath(`${packageName}/icons.json`, { url: cwd }).catch(() => void 0);
+			}
+		} else if (!jsonPath && autoInstall) {
+			await tryInstallPkg(packageName, autoInstall);
+			jsonPath = await resolvePath(`${packageName}/icons.json`, { url: cwd }).catch(() => void 0);
+		}
+		if (!jsonPath) {
+			let packagePath = await resolvePath(packageName, { url: cwd }).catch(() => void 0);
+			if (packagePath?.match(/^[a-z]:/i)) packagePath = `file:///${packagePath}`.replace(/\\/g, "/");
+			if (packagePath) {
+				const { icons } = await importModule(packagePath);
+				if (icons) return icons;
+			}
+		}
+		let stat;
+		try {
+			stat = jsonPath ? await promises.lstat(jsonPath) : void 0;
+		} catch (err) {
+			return void 0;
+		}
+		if (stat?.isFile()) return JSON.parse(await promises.readFile(jsonPath, "utf8"));
+		else return void 0;
+	}
+}
+
+export { loadCollectionFromFS };