export function readManifest()

in src/package.ts [1221:1255]
31 lines of code
5 McCabe index (conditional complexity)

export function readManifest(cwd = process.cwd(), nls = true): Promise<Manifest> {
	const manifestPath = path.join(cwd, 'package.json');
	const manifestNLSPath = path.join(cwd, 'package.nls.json');

	const manifest = fs.promises
		.readFile(manifestPath, 'utf8')
		.catch(() => Promise.reject(`Extension manifest not found: ${manifestPath}`))
		.then<Manifest>(manifestStr => {
			try {
				return Promise.resolve(JSON.parse(manifestStr));
			} catch (e) {
				return Promise.reject(`Error parsing 'package.json' manifest file: not a valid JSON file.`);
			}
		})
		.then(validateManifest);

	if (!nls) {
		return manifest;
	}

	const manifestNLS = fs.promises
		.readFile(manifestNLSPath, 'utf8')
		.catch<string>(err => (err.code !== 'ENOENT' ? Promise.reject(err) : Promise.resolve('{}')))
		.then<ITranslations>(raw => {
			try {
				return Promise.resolve(JSON.parse(raw));
			} catch (e) {
				return Promise.reject(`Error parsing JSON manifest translations file: ${manifestNLSPath}`);
			}
		});

	return Promise.all([manifest, manifestNLS]).then(([manifest, translations]) => {
		return patchNLS(manifest, translations);
	});
}