{"record":{"id":"500b7850538d3691","repo":"Fission-AI/OpenSpec","slug":"error-message-cleanuperror-instanceof-error","errorCode":null,"errorMessage":"${error.message} ${cleanupError instanceof Error ? cleanupError.message : String(cleanupError)}","messagePattern":"\\$\\{error\\.message\\} \\$\\{cleanupError instanceof Error \\? cleanupError\\.message : String\\(cleanupError\\)\\}","errorType":"exception","errorClass":"RetirementBackupsRetainedError","httpStatus":null,"severity":"error","filePath":"src/core/archive.ts","lineNumber":1982,"sourceCode":"                      `The active delta for '${proposed.update.id}' changed during the fallback copy.`\n                    );\n                  }\n                }\n              }\n            };\n            await moveDirectory(changeDir, archivePath, {\n              verifyCopiedDestination: verifyArchivedDeltas,\n            });\n            changeArchived = true;\n            await verifyArchivedDeltas();\n            await finalizeRetirementBackups(specSnapshots, mainSpecsDir);\n          } catch (error) {\n            if (error instanceof MoveDestinationRetainedError) {\n              changeArchived = true;\n              try {\n                await finalizeRetirementBackups(specSnapshots, mainSpecsDir);\n              } catch (cleanupError) {\n                throw new RetirementBackupsRetainedError(\n                  `${error.message} ${\n                    cleanupError instanceof Error ? cleanupError.message : String(cleanupError)\n                  }`\n                );\n              }\n              throw error;\n            }\n            if (error instanceof RetirementBackupsRetainedError) throw error;\n            const rollbackErrors: Error[] = [];\n            try {\n              await restoreSpecSnapshots(\n                specSnapshots.filter(({ target }) => mutationAttempts.has(target))\n              );\n            } catch (rollbackError) {\n              rollbackErrors.push(\n                rollbackError instanceof Error\n                  ? rollbackError\n                  : new Error(String(rollbackError))","sourceCodeStart":1964,"sourceCodeEnd":2000,"githubUrl":"https://github.com/Fission-AI/OpenSpec/blob/6926ccb18afa4ff621112813e9968334576ee11a/src/core/archive.ts#L1964-L2000","documentation":"Error \"${error.message} ${cleanupError instanceof Error ? cleanupError.message : String(cleanupError)}\" thrown in Fission-AI/OpenSpec.","triggerScenarios":"Thrown at src/core/archive.ts:1982 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":"6926ccb18afa4ff621112813e9968334576ee11a","analyzedAt":"2026-08-25T12:29:45.729Z","schemaVersion":2},"datasetVersion":"2026-08-25T16:17:27.014Z"}