source/github-helpers/does-file-exist.tsx


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import * as api from './api';
import GitHubURL from './github-url';

export default async function doesFileExist(url: GitHubURL): Promise<boolean> {
	const {repository} = await api.v4(`
		repository(owner: "${url.user}", name: "${url.repository}") {
			file: object(expression: "${url.branch}:${url.filePath}") {
				id
			}
		}
	`);

	return Boolean(repository.file);
}