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backend/node_modules/lilconfig/src/index.d.ts

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+export type LilconfigResult = null | {
+	filepath: string;
+	config: any;
+	isEmpty?: boolean;
+};
+interface OptionsBase {
+	cache?: boolean;
+	stopDir?: string;
+	searchPlaces?: string[];
+	ignoreEmptySearchPlaces?: boolean;
+	packageProp?: string | string[];
+}
+export type Transform =
+	| TransformSync
+	| ((result: LilconfigResult) => Promise<LilconfigResult>);
+export type TransformSync = (result: LilconfigResult) => LilconfigResult;
+type LoaderResult = any;
+export type LoaderSync = (filepath: string, content: string) => LoaderResult;
+export type Loader =
+	| LoaderSync
+	| ((filepath: string, content: string) => Promise<LoaderResult>);
+export type Loaders = Record<string, Loader>;
+export type LoadersSync = Record<string, LoaderSync>;
+export interface Options extends OptionsBase {
+	loaders?: Loaders;
+	transform?: Transform;
+}
+export interface OptionsSync extends OptionsBase {
+	loaders?: LoadersSync;
+	transform?: TransformSync;
+}
+export declare const defaultLoadersSync: LoadersSync;
+export declare const defaultLoaders: Loaders;
+type ClearCaches = {
+	clearLoadCache: () => void;
+	clearSearchCache: () => void;
+	clearCaches: () => void;
+};
+type AsyncSearcher = {
+	search(searchFrom?: string): Promise<LilconfigResult>;
+	load(filepath: string): Promise<LilconfigResult>;
+} & ClearCaches;
+export declare function lilconfig(
+	name: string,
+	options?: Partial<Options>,
+): AsyncSearcher;
+type SyncSearcher = {
+	search(searchFrom?: string): LilconfigResult;
+	load(filepath: string): LilconfigResult;
+} & ClearCaches;
+export declare function lilconfigSync(
+	name: string,
+	options?: OptionsSync,
+): SyncSearcher;

backend/node_modules/lilconfig/src/index.js

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+// @ts-check
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+const url = require('url');
+
+const fsReadFileAsync = fs.promises.readFile;
+
+/** @type {(name: string, sync: boolean) => string[]} */
+function getDefaultSearchPlaces(name, sync) {
+	return [
+		'package.json',
+		`.${name}rc.json`,
+		`.${name}rc.js`,
+		`.${name}rc.cjs`,
+		...(sync ? [] : [`.${name}rc.mjs`]),
+		`.config/${name}rc`,
+		`.config/${name}rc.json`,
+		`.config/${name}rc.js`,
+		`.config/${name}rc.cjs`,
+		...(sync ? [] : [`.config/${name}rc.mjs`]),
+		`${name}.config.js`,
+		`${name}.config.cjs`,
+		...(sync ? [] : [`${name}.config.mjs`]),
+	];
+}
+
+/**
+ * @type {(p: string) => string}
+ *
+ * see #17
+ * On *nix, if cwd is not under homedir,
+ * the last path will be '', ('/build' -> '')
+ * but it should be '/' actually.
+ * And on Windows, this will never happen. ('C:\build' -> 'C:')
+ */
+function parentDir(p) {
+	return path.dirname(p) || path.sep;
+}
+
+/** @type {import('./index').LoaderSync} */
+const jsonLoader = (_, content) => JSON.parse(content);
+// Use plain require in webpack context for dynamic import
+const requireFunc =
+	typeof __webpack_require__ === 'function' ? __non_webpack_require__ : require;
+/** @type {import('./index').LoadersSync} */
+const defaultLoadersSync = Object.freeze({
+	'.js': requireFunc,
+	'.json': requireFunc,
+	'.cjs': requireFunc,
+	noExt: jsonLoader,
+});
+module.exports.defaultLoadersSync = defaultLoadersSync;
+
+/** @type {import('./index').Loader} */
+const dynamicImport = async id => {
+	try {
+		const fileUrl = url.pathToFileURL(id).href;
+		const mod = await import(/* webpackIgnore: true */ fileUrl);
+
+		return mod.default;
+	} catch (e) {
+		try {
+			return requireFunc(id);
+		} catch (/** @type {any} */ requireE) {
+			if (
+				requireE.code === 'ERR_REQUIRE_ESM' ||
+				(requireE instanceof SyntaxError &&
+					requireE
+						.toString()
+						.includes('Cannot use import statement outside a module'))
+			) {
+				throw e;
+			}
+			throw requireE;
+		}
+	}
+};
+
+/** @type {import('./index').Loaders} */
+const defaultLoaders = Object.freeze({
+	'.js': dynamicImport,
+	'.mjs': dynamicImport,
+	'.cjs': dynamicImport,
+	'.json': jsonLoader,
+	noExt: jsonLoader,
+});
+module.exports.defaultLoaders = defaultLoaders;
+
+/**
+ * @param {string} name
+ * @param {import('./index').Options | import('./index').OptionsSync} options
+ * @param {boolean} sync
+ * @returns {Required<import('./index').Options | import('./index').OptionsSync>}
+ */
+function getOptions(name, options, sync) {
+	/** @type {Required<import('./index').Options>} */
+	const conf = {
+		stopDir: os.homedir(),
+		searchPlaces: getDefaultSearchPlaces(name, sync),
+		ignoreEmptySearchPlaces: true,
+		cache: true,
+		transform: x => x,
+		packageProp: [name],
+		...options,
+		loaders: {
+			...(sync ? defaultLoadersSync : defaultLoaders),
+			...options.loaders,
+		},
+	};
+	conf.searchPlaces.forEach(place => {
+		const key = path.extname(place) || 'noExt';
+		const loader = conf.loaders[key];
+		if (!loader) {
+			throw new Error(`Missing loader for extension "${place}"`);
+		}
+
+		if (typeof loader !== 'function') {
+			throw new Error(
+				`Loader for extension "${place}" is not a function: Received ${typeof loader}.`,
+			);
+		}
+	});
+
+	return conf;
+}
+
+/** @type {(props: string | string[], obj: Record<string, any>) => unknown} */
+function getPackageProp(props, obj) {
+	if (typeof props === 'string' && props in obj) return obj[props];
+	return (
+		(Array.isArray(props) ? props : props.split('.')).reduce(
+			(acc, prop) => (acc === undefined ? acc : acc[prop]),
+			obj,
+		) || null
+	);
+}
+
+/** @param {string} filepath */
+function validateFilePath(filepath) {
+	if (!filepath) throw new Error('load must pass a non-empty string');
+}
+
+/** @type {(loader: import('./index').Loader, ext: string) => void} */
+function validateLoader(loader, ext) {
+	if (!loader) throw new Error(`No loader specified for extension "${ext}"`);
+	if (typeof loader !== 'function') throw new Error('loader is not a function');
+}
+
+/** @type {(enableCache: boolean) => <T>(c: Map<string, T>, filepath: string, res: T) => T} */
+const makeEmplace = enableCache => (c, filepath, res) => {
+	if (enableCache) c.set(filepath, res);
+	return res;
+};
+
+/** @type {import('./index').lilconfig} */
+module.exports.lilconfig = function lilconfig(name, options) {
+	const {
+		ignoreEmptySearchPlaces,
+		loaders,
+		packageProp,
+		searchPlaces,
+		stopDir,
+		transform,
+		cache,
+	} = getOptions(name, options ?? {}, false);
+	const searchCache = new Map();
+	const loadCache = new Map();
+	const emplace = makeEmplace(cache);
+
+	return {
+		async search(searchFrom = process.cwd()) {
+			/** @type {import('./index').LilconfigResult} */
+			const result = {
+				config: null,
+				filepath: '',
+			};
+
+			/** @type {Set<string>} */
+			const visited = new Set();
+			let dir = searchFrom;
+			dirLoop: while (true) {
+				if (cache) {
+					const r = searchCache.get(dir);
+					if (r !== undefined) {
+						for (const p of visited) searchCache.set(p, r);
+						return r;
+					}
+					visited.add(dir);
+				}
+
+				for (const searchPlace of searchPlaces) {
+					const filepath = path.join(dir, searchPlace);
+					try {
+						await fs.promises.access(filepath);
+					} catch {
+						continue;
+					}
+					const content = String(await fsReadFileAsync(filepath));
+					const loaderKey = path.extname(searchPlace) || 'noExt';
+					const loader = loaders[loaderKey];
+
+					// handle package.json
+					if (searchPlace === 'package.json') {
+						const pkg = await loader(filepath, content);
+						const maybeConfig = getPackageProp(packageProp, pkg);
+						if (maybeConfig != null) {
+							result.config = maybeConfig;
+							result.filepath = filepath;
+							break dirLoop;
+						}
+
+						continue;
+					}
+
+					// handle other type of configs
+					const isEmpty = content.trim() === '';
+					if (isEmpty && ignoreEmptySearchPlaces) continue;
+
+					if (isEmpty) {
+						result.isEmpty = true;
+						result.config = undefined;
+					} else {
+						validateLoader(loader, loaderKey);
+						result.config = await loader(filepath, content);
+					}
+					result.filepath = filepath;
+					break dirLoop;
+				}
+				if (dir === stopDir || dir === parentDir(dir)) break dirLoop;
+				dir = parentDir(dir);
+			}
+
+			const transformed =
+				// not found
+				result.filepath === '' && result.config === null
+					? transform(null)
+					: transform(result);
+
+			if (cache) {
+				for (const p of visited) searchCache.set(p, transformed);
+			}
+
+			return transformed;
+		},
+		async load(filepath) {
+			validateFilePath(filepath);
+			const absPath = path.resolve(process.cwd(), filepath);
+			if (cache && loadCache.has(absPath)) {
+				return loadCache.get(absPath);
+			}
+			const {base, ext} = path.parse(absPath);
+			const loaderKey = ext || 'noExt';
+			const loader = loaders[loaderKey];
+			validateLoader(loader, loaderKey);
+			const content = String(await fsReadFileAsync(absPath));
+
+			if (base === 'package.json') {
+				const pkg = await loader(absPath, content);
+				return emplace(
+					loadCache,
+					absPath,
+					transform({
+						config: getPackageProp(packageProp, pkg),
+						filepath: absPath,
+					}),
+				);
+			}
+			/** @type {import('./index').LilconfigResult} */
+			const result = {
+				config: null,
+				filepath: absPath,
+			};
+			// handle other type of configs
+			const isEmpty = content.trim() === '';
+			if (isEmpty && ignoreEmptySearchPlaces)
+				return emplace(
+					loadCache,
+					absPath,
+					transform({
+						config: undefined,
+						filepath: absPath,
+						isEmpty: true,
+					}),
+				);
+
+			// cosmiconfig returns undefined for empty files
+			result.config = isEmpty ? undefined : await loader(absPath, content);
+
+			return emplace(
+				loadCache,
+				absPath,
+				transform(isEmpty ? {...result, isEmpty, config: undefined} : result),
+			);
+		},
+		clearLoadCache() {
+			if (cache) loadCache.clear();
+		},
+		clearSearchCache() {
+			if (cache) searchCache.clear();
+		},
+		clearCaches() {
+			if (cache) {
+				loadCache.clear();
+				searchCache.clear();
+			}
+		},
+	};
+};
+
+/** @type {import('./index').lilconfigSync} */
+module.exports.lilconfigSync = function lilconfigSync(name, options) {
+	const {
+		ignoreEmptySearchPlaces,
+		loaders,
+		packageProp,
+		searchPlaces,
+		stopDir,
+		transform,
+		cache,
+	} = getOptions(name, options ?? {}, true);
+	const searchCache = new Map();
+	const loadCache = new Map();
+	const emplace = makeEmplace(cache);
+
+	return {
+		search(searchFrom = process.cwd()) {
+			/** @type {import('./index').LilconfigResult} */
+			const result = {
+				config: null,
+				filepath: '',
+			};
+
+			/** @type {Set<string>} */
+			const visited = new Set();
+			let dir = searchFrom;
+			dirLoop: while (true) {
+				if (cache) {
+					const r = searchCache.get(dir);
+					if (r !== undefined) {
+						for (const p of visited) searchCache.set(p, r);
+						return r;
+					}
+					visited.add(dir);
+				}
+
+				for (const searchPlace of searchPlaces) {
+					const filepath = path.join(dir, searchPlace);
+					try {
+						fs.accessSync(filepath);
+					} catch {
+						continue;
+					}
+					const loaderKey = path.extname(searchPlace) || 'noExt';
+					const loader = loaders[loaderKey];
+					const content = String(fs.readFileSync(filepath));
+
+					// handle package.json
+					if (searchPlace === 'package.json') {
+						const pkg = loader(filepath, content);
+						const maybeConfig = getPackageProp(packageProp, pkg);
+						if (maybeConfig != null) {
+							result.config = maybeConfig;
+							result.filepath = filepath;
+							break dirLoop;
+						}
+
+						continue;
+					}
+
+					// handle other type of configs
+					const isEmpty = content.trim() === '';
+					if (isEmpty && ignoreEmptySearchPlaces) continue;
+
+					if (isEmpty) {
+						result.isEmpty = true;
+						result.config = undefined;
+					} else {
+						validateLoader(loader, loaderKey);
+						result.config = loader(filepath, content);
+					}
+					result.filepath = filepath;
+					break dirLoop;
+				}
+				if (dir === stopDir || dir === parentDir(dir)) break dirLoop;
+				dir = parentDir(dir);
+			}
+
+			const transformed =
+				// not found
+				result.filepath === '' && result.config === null
+					? transform(null)
+					: transform(result);
+
+			if (cache) {
+				for (const p of visited) searchCache.set(p, transformed);
+			}
+
+			return transformed;
+		},
+		load(filepath) {
+			validateFilePath(filepath);
+			const absPath = path.resolve(process.cwd(), filepath);
+			if (cache && loadCache.has(absPath)) {
+				return loadCache.get(absPath);
+			}
+			const {base, ext} = path.parse(absPath);
+			const loaderKey = ext || 'noExt';
+			const loader = loaders[loaderKey];
+			validateLoader(loader, loaderKey);
+
+			const content = String(fs.readFileSync(absPath));
+
+			if (base === 'package.json') {
+				const pkg = loader(absPath, content);
+				return transform({
+					config: getPackageProp(packageProp, pkg),
+					filepath: absPath,
+				});
+			}
+			const result = {
+				config: null,
+				filepath: absPath,
+			};
+			// handle other type of configs
+			const isEmpty = content.trim() === '';
+			if (isEmpty && ignoreEmptySearchPlaces)
+				return emplace(
+					loadCache,
+					absPath,
+					transform({
+						filepath: absPath,
+						config: undefined,
+						isEmpty: true,
+					}),
+				);
+
+			// cosmiconfig returns undefined for empty files
+			result.config = isEmpty ? undefined : loader(absPath, content);
+
+			return emplace(
+				loadCache,
+				absPath,
+				transform(isEmpty ? {...result, isEmpty, config: undefined} : result),
+			);
+		},
+		clearLoadCache() {
+			if (cache) loadCache.clear();
+		},
+		clearSearchCache() {
+			if (cache) searchCache.clear();
+		},
+		clearCaches() {
+			if (cache) {
+				loadCache.clear();
+				searchCache.clear();
+			}
+		},
+	};
+};