sveltejs/kit · error · Error

Failed to locate provided tsconfig or jsconfig

Error message

Failed to locate provided tsconfig or jsconfig

What it means

When the tsconfig path is explicitly provided (via options), `load_tsconfig` walks up from the filename looking for tsconfig.json/jsconfig.json and throws this error if the explicitly provided location contains no such config file.

Source

Thrown at packages/package/src/typescript.js:250

	}

	let config_filename;
	/** @type {string[]} */
	const traversed_dirs = [];

	if (tsconfig) {
		if (fs.existsSync(tsconfig)) {
			config_filename = tsconfig;

			const cached = cache.get(config_filename);
			if (cached) {
				return cached;
			} else {
				// This isn't really a dir, but it simplifies the caching logic
				traversed_dirs.push(config_filename);
			}
		} else {
			throw new Error('Failed to locate provided tsconfig or jsconfig');
		}
	} else {
		// ts.findConfigFile is broken (it will favour a distant tsconfig
		// over a near jsconfig, and then only when you call it twice)
		// so we implement it ourselves
		let dir = filename;
		while (dir !== (dir = path.dirname(dir))) {
			const cached = cache.get(dir);
			if (cached) {
				for (const traversed of traversed_dirs) {
					cache.set(traversed, cached);
				}
				return cached;
			}

			traversed_dirs.push(dir);

			const tsconfig = path.join(dir, 'tsconfig.json');

View on GitHub (pinned to 03f1687fe6)

Solutions

1. Fix the provided path so it points at the directory (or file) containing tsconfig.json/jsconfig.json.
2. Verify the file exists at the given path: `ls <path>/tsconfig.json`.
3. Omit the tsconfig option to let the packager auto-discover it from the project root.

Example fix

// before
svelte-package --tsconfig ./configs

// after
svelte-package --tsconfig ./configs/tsconfig.json

import fs from 'node:fs';
const p = './configs';
if (!fs.existsSync(`${p}/tsconfig.json`) && !fs.existsSync(`${p}/jsconfig.json`)) {
  throw new Error(`no tsconfig/jsconfig at ${p}`);
}

try {
  await run(['svelte-package', '--tsconfig', './configs']);
} catch (e) {
  if (String(e.message).includes('Failed to locate provided tsconfig')) {
    throw new Error('Point --tsconfig at the directory containing tsconfig.json');
  }
  throw e;
}

When it happens

Trigger: Passing a `tsconfig` option/flag to svelte-package pointing at a directory or file where no tsconfig.json or jsconfig.json actually exists.

Common situations: Typo in the `--tsconfig` flag value; pointing at the tsconfig's output directory rather than its location; config moved/renamed but packaging options not updated.

Related errors

• Failed to locate tsconfig or jsconfig
• Malformed tsconfig ${JSON.stringify(error, null, 2)}
• Invalid alias key: ${key}
• Invalid alias value: ${value}
• ${path.relative('.', input)} does not exist

AI-assisted analysis of sveltejs/kit@03f1687fe6 (2026-09-02). Data as JSON: /api/errors/d790c95063f195cd. Report an issue: GitHub.