| 1 | import findUp from 'find-up';
|
| 2 | import path from 'path';
|
| 3 | import {CLIError} from './errors';
|
| 4 |
|
| 5 | /**
|
| 6 | * Finds project root by looking for a closest `package.json`.
|
| 7 | */
|
| 8 | export default function findProjectRoot(cwd = process.cwd()): string {
|
| 9 | const packageLocation = findUp.sync('package.json', {cwd});
|
| 10 | /**
|
| 11 | * It is possible that `package.json` doesn't exist
|
| 12 | * in the tree. In that case, we want to throw an error.
|
| 13 | *
|
| 14 | * When executing via `npx`, this will never happen as `npm`
|
| 15 | * requires that file to be present in order to run.
|
| 16 | */
|
| 17 | if (!packageLocation) {
|
| 18 | throw new CLIError(`
|
| 19 | We couldn't find a package.json in your project.
|
| 20 | Are you sure you are running it inside a React Native project?
|
| 21 | `);
|
| 22 | }
|
| 23 |
|
| 24 | return path.dirname(packageLocation);
|
| 25 | }
|