{"record":{"id":"729e87f52aaac85a","repo":"grafana/k6","slug":"width-must-be-a-number-got-s","errorCode":null,"errorMessage":"width must be a number, got %s","messagePattern":"width must be a number, got (.+?)","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/js/modules/k6/browser/browser/page_mapping.go","lineNumber":1116,"sourceCode":"func parseSize(rt *sobek.Runtime, opts sobek.Value) (*common.Size, error) {\n\tsize := &common.Size{}\n\tif k6common.IsNullish(opts) {\n\t\treturn size, nil\n\t}\n\n\tobj := opts.ToObject(rt)\n\tfor _, k := range obj.Keys() {\n\t\tv := obj.Get(k)\n\t\tif k6common.IsNullish(v) {\n\t\t\tcontinue\n\t\t}\n\t\tswitch k {\n\t\tcase \"width\":\n\t\t\tswitch v.ExportType().Kind() {\n\t\t\tcase reflect.Int64, reflect.Float64:\n\t\t\t\tsize.Width = v.ToFloat()\n\t\t\tdefault:\n\t\t\t\treturn nil, fmt.Errorf(\"width must be a number, got %s\", v.ExportType().Kind())\n\t\t\t}\n\t\tcase \"height\":\n\t\t\tswitch v.ExportType().Kind() {\n\t\t\tcase reflect.Int64, reflect.Float64:\n\t\t\t\tsize.Height = v.ToFloat()\n\t\t\tdefault:\n\t\t\t\treturn nil, fmt.Errorf(\"height must be a number, got %s\", v.ExportType().Kind())\n\t\t\t}\n\t\t}\n\t}\n\n\treturn size, nil\n}\n\n// parsePageEmulateMediaOptions parses the page emulate media options from a Sobek value.\n//\n//nolint:unparam\nfunc parsePageEmulateMediaOptions(","sourceCodeStart":1098,"sourceCodeEnd":1134,"githubUrl":"https://github.com/grafana/k6/blob/93accf6570dcd306ca5e99cc44c393ee3797761b/internal/js/modules/k6/browser/browser/page_mapping.go#L1098-L1134","documentation":"Error \"width must be a number, got %s\" thrown in grafana/k6.","triggerScenarios":"Thrown at internal/js/modules/k6/browser/browser/page_mapping.go:1116 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"}