grafana/k6 · error

evaluateHandle requires a page function

Error message

evaluateHandle requires a page function

What it means

Error "evaluateHandle requires a page function" thrown in grafana/k6.

Source

Thrown at internal/js/modules/k6/browser/browser/page_mapping.go:117

		},
		"emulateVisionDeficiency": func(typ string) *sobek.Promise {
			return promise(vu, func() (any, error) {
				return nil, p.EmulateVisionDeficiency(typ) //nolint:wrapcheck
			})
		},
		"evaluate": func(pageFunc sobek.Value, gargs ...sobek.Value) (*sobek.Promise, error) {
			if sobekEmptyString(pageFunc) {
				return nil, fmt.Errorf("evaluate requires a page function")
			}
			funcString := pageFunc.String()
			gopts := exportArgs(gargs)
			return promise(vu, func() (any, error) {
				return p.Evaluate(funcString, gopts...)
			}), nil
		},
		"evaluateHandle": func(pageFunc sobek.Value, gargs ...sobek.Value) (*sobek.Promise, error) {
			if sobekEmptyString(pageFunc) {
				return nil, fmt.Errorf("evaluateHandle requires a page function")
			}
			funcString := pageFunc.String()
			gopts := exportArgs(gargs)
			return promise(vu, func() (any, error) {
				jsh, err := p.EvaluateHandle(funcString, gopts...)
				if err != nil {
					return nil, err //nolint:wrapcheck
				}
				return mapJSHandle(vu, jsh), nil
			}), nil
		},
		"fill": func(selector string, value string, opts sobek.Value) (*sobek.Promise, error) {
			popts := common.NewFrameFillOptions(p.MainFrame().Timeout())
			if err := popts.Parse(vu.Context(), opts); err != nil {
				return nil, fmt.Errorf("parsing fill options: %w", err)
			}
			return promise(vu, func() (any, error) {
				return nil, p.Fill(selector, value, popts) //nolint:wrapcheck

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/js/modules/k6/browser/browser/page_mapping.go:117 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/801d89e5b87ba839. Report an issue: GitHub.