{"record":{"id":"213e2ebc15124306","repo":"grafana/k6","slug":"executing-waitforevent-predicate-w","errorCode":null,"errorMessage":"executing waitForEvent predicate: %w","messagePattern":"executing waitForEvent predicate: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/js/modules/k6/browser/browser/page_mapping.go","lineNumber":715,"sourceCode":"\t\t\t\treturn nil, fmt.Errorf(\"parsing waitForEvent options: %w\", err)\n\t\t\t}\n\n\t\t\tctx := vu.Context()\n\t\t\ttq := vu.get(ctx, p.TargetID())\n\n\t\t\treturn promise(vu, func() (any, error) {\n\t\t\t\trpe, err := p.WaitForEvent(event, popts, func(pe common.PageEvent) (bool, error) {\n\t\t\t\t\tif fn == nil {\n\t\t\t\t\t\treturn true, nil\n\t\t\t\t\t}\n\t\t\t\t\treturn queueTask(ctx, tq, func() (bool, error) {\n\t\t\t\t\t\tm, err := mapPageEvent(vu, pe)\n\t\t\t\t\t\tif err != nil {\n\t\t\t\t\t\t\treturn false, err\n\t\t\t\t\t\t}\n\t\t\t\t\t\tv, err := fn(sobek.Undefined(), vu.Runtime().ToValue(m))\n\t\t\t\t\t\tif err != nil {\n\t\t\t\t\t\t\treturn false, fmt.Errorf(\"executing waitForEvent predicate: %w\", err)\n\t\t\t\t\t\t}\n\t\t\t\t\t\treturn v.ToBoolean(), nil\n\t\t\t\t\t})()\n\t\t\t\t})\n\t\t\t\tif err != nil {\n\t\t\t\t\treturn nil, fmt.Errorf(\"waiting for page event %q: %w\", event, err)\n\t\t\t\t}\n\t\t\t\treturn mapPageEvent(vu, rpe)\n\t\t\t}), nil\n\t\t},\n\t\t\"workers\": func() *sobek.Object {\n\t\t\tworkers := p.Workers()\n\t\t\tmws := make([]mapping, 0, len(workers))\n\t\t\tfor _, w := range workers {\n\t\t\t\tmw := mapWorker(vu, w)\n\t\t\t\tmws = append(mws, mw)\n\t\t\t}\n\t\t\treturn rt.ToValue(mws).ToObject(rt)","sourceCodeStart":697,"sourceCodeEnd":733,"githubUrl":"https://github.com/grafana/k6/blob/93accf6570dcd306ca5e99cc44c393ee3797761b/internal/js/modules/k6/browser/browser/page_mapping.go#L697-L733","documentation":"Error \"executing waitForEvent predicate: %w\" thrown in grafana/k6.","triggerScenarios":"Thrown at internal/js/modules/k6/browser/browser/page_mapping.go:715 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"93accf6570dcd306ca5e99cc44c393ee3797761b","analyzedAt":"2026-08-15T21:23:27.118Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}