grafana/k6 · error

page waitForFunction: %w

Error message

page waitForFunction: %w

What it means

Error "page waitForFunction: %w" thrown in grafana/k6.

Source

Thrown at internal/js/modules/k6/browser/browser/page_mapping.go:587

		},
		"unroute": func(url string) (*sobek.Promise, error) {
			return promise(vu, func() (any, error) {
				return nil, p.Unroute(url)
			}), nil
		},
		"unrouteAll": func() (*sobek.Promise, error) {
			return promise(vu, func() (any, error) {
				return nil, p.UnrouteAll()
			}), nil
		},
		"url":          p.URL,
		"viewportSize": p.ViewportSize,
		"waitForFunction": func(pageFunc, opts sobek.Value, args ...sobek.Value) (*sobek.Promise, error) {
			js, popts, pargs, err := parseWaitForFunctionArgs(
				vu.Context(), p.Timeout(), pageFunc, opts, args...,
			)
			if err != nil {
				return nil, fmt.Errorf("page waitForFunction: %w", err)
			}

			return promise(vu, func() (result any, reason error) {
				return p.WaitForFunction(js, popts, pargs...) //nolint:wrapcheck
			}), nil
		},
		"waitForLoadState": func(state string, opts sobek.Value) (*sobek.Promise, error) {
			popts := common.NewFrameWaitForLoadStateOptions(p.MainFrame().Timeout())
			if err := popts.Parse(vu.Context(), opts); err != nil {
				return nil, fmt.Errorf("parsing waitForLoadState %q options: %w", state, err)
			}

			return promise(vu, func() (any, error) {
				return nil, p.WaitForLoadState(state, popts) //nolint:wrapcheck
			}), nil
		},
		"waitForNavigation": func(opts sobek.Value) (*sobek.Promise, error) {
			return mapWaitForNavigation(vu, p, opts)

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/js/modules/k6/browser/browser/page_mapping.go:587 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/ef16e01962e4614c. Report an issue: GitHub.