grafana/k6 · error

parsing get attribute options

Error message

parsing get attribute options: %w

What it means

Thrown synchronously when the options argument to locator.getAttribute(name, opts) fails to parse. The mapping (locator_mapping.go:218-222) builds FrameBaseOptions with the locator timeout and wraps Parse errors as "parsing get attribute options: %w". Since FrameBaseOptions.Parse only reads strict/timeout with coercing accessors that tolerate ordinary type mistakes, an actual failure comes from sobek raising during ToObject/Keys/Get — i.e. a throwing getter, a Proxy trap, or a throwing valueOf on the values.

Solutions

1. Pass a plain literal: locator.getAttribute('href', { timeout: 3000 }) or omit options
2. Materialize dynamic values before the call
3. Avoid Proxies/accessors on options handed to the browser module
4. Wrap in try/catch to fail the iteration cleanly

Example fix

// before
await locator.getAttribute('href', optsProxy); // get trap throws

// after
const opts = { timeout: optsProxy.timeout };
await locator.getAttribute('href', opts);

function isPlainBaseOptions(o) {
  return o == null || (typeof o === 'object' &&
    (o.timeout === undefined || typeof o.timeout === 'number') &&
    (o.strict === undefined || typeof o.strict === 'boolean'));
}

try {
  const href = await locator.getAttribute('href', opts);
} catch (e) {
  throw new Error(`getAttribute failed (check the options object, not the attribute name): ${e}`);
}

When it happens

Trigger: Options object with a getter for timeout/strict that raises; Proxy options whose get or ownKeys traps throw; a timeout value with a throwing toPrimitive during integer coercion.

Common situations: Attribute-fetch helpers that accept config objects with validation getters; argument tracing Proxies; passing exotic objects where a plain literal is expected.

Related errors

• parsing fill options
• parsing focus options
• parsing hover options
• parsing inner HTML options
• parsing inner text options

AI-assisted analysis of grafana/k6@8d06114777 (2026-09-14). Data as JSON: /api/errors/059b216195916d8f. Report an issue: GitHub.

Appendix: source

Thrown at internal/js/modules/k6/browser/browser/locator_mapping.go:222

			}))
		},
		"first": func() *sobek.Object {
			ml := mapLocator(vu, lo.First())
			return rt.ToValue(ml).ToObject(rt)
		},
		"focus": func(opts sobek.Value) (*sobek.Promise, error) {
			copts := common.NewFrameBaseOptions(lo.Timeout())
			if err := parseFrameBaseOptions(copts, rt, opts); err != nil {
				return nil, fmt.Errorf("parsing focus options: %w", err)
			}
			return promise(vu, func() (any, error) {
				return nil, lo.Focus(copts) //nolint:wrapcheck
			}), nil
		},
		"getAttribute": func(name string, opts sobek.Value) (*sobek.Promise, error) {
			copts := common.NewFrameBaseOptions(lo.Timeout())
			if err := parseFrameBaseOptions(copts, rt, opts); err != nil {
				return nil, fmt.Errorf("parsing get attribute options: %w", err)
			}
			return promise(vu, func() (any, error) {
				s, ok, err := lo.GetAttribute(name, copts)
				if err != nil {
					return nil, err //nolint:wrapcheck
				}
				if !ok {
					return nil, nil
				}
				return s, nil
			}), nil
		},
		"getByAltText": func(alt sobek.Value, opts sobek.Value) (*sobek.Object, error) {
			if k6common.IsNullish(alt) {
				return nil, errors.New("missing required argument 'altText'")
			}
			palt, popts := parseGetByBaseOptions(vu.Context(), alt, false, opts)

View on GitHub (pinned to 8d06114777)