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node_modules/tsconfck/src/find-all.js

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+import path from 'node:path';
+import { readdir } from 'node:fs';
+
+/**
+ * @typedef WalkState
+ * @interface
+ * @property {string[]} files - files
+ * @property {number} calls - number of ongoing calls
+ * @property {(dir: string)=>boolean} skip - function to skip dirs
+ * @property {boolean} err - error flag
+ * @property {string[]} configNames - config file names
+ */
+
+const sep = path.sep;
+
+/**
+ * find all tsconfig.json files in dir
+ *
+ * @param {string} dir - path to dir (absolute or relative to cwd)
+ * @param {import('./public.d.ts').TSConfckFindAllOptions} [options] - options
+ * @returns {Promise<string[]>} list of absolute paths to all found tsconfig.json files
+ */
+export async function findAll(dir, options) {
+	/** @type WalkState */
+	const state = {
+		files: [],
+		calls: 0,
+		skip: options?.skip,
+		err: false,
+		configNames: options?.configNames ?? ['tsconfig.json']
+	};
+	return new Promise((resolve, reject) => {
+		walk(path.resolve(dir), state, (err, files) => (err ? reject(err) : resolve(files)));
+	});
+}
+
+/**
+ *
+ * @param {string} dir
+ * @param {WalkState} state
+ * @param {(err: NodeJS.ErrnoException | null, files?: string[]) => void} done
+ */
+function walk(dir, state, done) {
+	if (state.err) {
+		return;
+	}
+	state.calls++;
+	readdir(dir, { withFileTypes: true }, (err, entries = []) => {
+		if (state.err) {
+			return;
+		}
+		// skip deleted or inaccessible directories
+		if (err && !(err.code === 'ENOENT' || err.code === 'EACCES' || err.code === 'EPERM')) {
+			state.err = true;
+			done(err);
+		} else {
+			for (const ent of entries) {
+				if (ent.isDirectory() && !state.skip?.(ent.name)) {
+					walk(`${dir}${sep}${ent.name}`, state, done);
+				} else if (ent.isFile() && state.configNames.includes(ent.name)) {
+					state.files.push(`${dir}${sep}${ent.name}`);
+				}
+			}
+			if (--state.calls === 0) {
+				if (!state.err) {
+					done(null, state.files);
+				}
+			}
+		}
+	});
+}