Method cleanup

packages/core/src/tools/grep.ts:443–451

()

            };

            const cleanup = () => {
              child.stdout.removeListener('data', onData);
              child.stderr.removeListener('data', onStderr);
              child.removeListener('error', onError);
              child.removeListener('close', onClose);
              if (child.connected) {
                child.disconnect();
              }
            };

            child.stdout.on('data', onData);
            child.stderr.on('data', onStderr);