dev'], EXEC_OPTS, function (er, code, stdout) {     t.ifError(er, 'ls --only=dev ran without issue')     t.equal(code, 0)     t.has(       stdout,       /test-package-with-one-dep@0\.0\.0/,       'output contains test-package-with-one-dep@0.0.0'     )     t.end()   }) })  test('npm ls --production', function (t) {   common.npm(['ls', '--production'], EXEC_OPTS, function (er, code, stdout) {     t.ifError(er, 'ls --production ran without issue')     t.notOk(code, 'npm exited ok')     t.has(       stdout,       /test-package-with-one-dep@0\.0\.0/,       'output contains test-package-with-one-dep@0.0.0'     )     t.has(       stdout,       /test-repo-url-ssh@0\.0\.0/,       'output 