{"record":{"id":"aa42a13b3f19ca09","repo":"can1357/oh-my-pi","slug":"failed-to-delete-session-error-instanceof-error","errorCode":null,"errorMessage":"Failed to delete session: ${error instanceof Error ? error.message : String(error)}","messagePattern":"Failed to delete session: (.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/coding-agent/src/modes/controllers/selector-controller.ts","lineNumber":1636,"sourceCode":"\t\t\t\tloadPinnedSessionIds(),\n\t\t\t]);\n\t\t\tsessions = loadedSessions;\n\t\t\tconst historyStorage = this.ctx.historyStorage;\n\t\t\tconst historyMatcher = historyStorage\n\t\t\t\t? (query: string) => historyStorage.matchingSessionIds(query)\n\t\t\t\t: undefined;\n\t\t\tonSelectSession = session => this.handleResumeSession(session.path);\n\t\t\tselectorOptions = {\n\t\t\t\tonDelete: async (session: SessionInfo) => {\n\t\t\t\t\tif (!(await this.#detachActiveSessionBeforeDeletion(session.path))) {\n\t\t\t\t\t\treturn false;\n\t\t\t\t\t}\n\t\t\t\t\tconst storage = new FileSessionStorage();\n\t\t\t\t\ttry {\n\t\t\t\t\t\tawait storage.deleteSessionWithArtifacts(session.path);\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\tthrow new Error(\n\t\t\t\t\t\t\t`Failed to delete session: ${error instanceof Error ? error.message : String(error)}`,\n\t\t\t\t\t\t\t{ cause: error },\n\t\t\t\t\t\t);\n\t\t\t\t\t}\n\t\t\t\t},\n\t\t\t\thistoryMatcher,\n\t\t\t\tloadAllSessions: () => SessionManager.listAll(),\n\t\t\t\tpinnedIds,\n\t\t\t};\n\t\t}\n\n\t\t// Keep the fullscreen picker on the alternate buffer while a selected\n\t\t// session is loaded and its transcript is rebuilt.\n\t\tlet overlayHandle: OverlayHandle | undefined;\n\t\tconst done = () => {\n\t\t\toverlayHandle?.hide();\n\t\t\tthis.focusActiveEditorArea();\n\t\t\tthis.ctx.ui.requestRender();","sourceCodeStart":1618,"sourceCodeEnd":1654,"githubUrl":"https://github.com/can1357/oh-my-pi/blob/969062200754ea02cfac922e5ebb8c608c079e15/packages/coding-agent/src/modes/controllers/selector-controller.ts#L1618-L1654","documentation":"The selector's delete callback wraps any error from FileSessionStorage.deleteSessionWithArtifacts into a uniform 'Failed to delete session: <detail>' Error with the original as cause. It surfaces storage-layer failures (fs errors) during session deletion to the selector UI.","triggerScenarios":"Selecting 'delete' on a session in the session selector when storage.deleteSessionWithArtifacts(session.path) throws — e.g. ENOENT (session file already gone), EPERM/EACCES (no permission), or EBUSY (file locked).","commonSituations":"Session file removed by another process or a cleanup script while the selector is open; read-only session directory; syncing tool (Dropbox/OneDrive) holding locks on the session file; deleting across a mount that changed.","solutions":["Check filesystem permissions on the session file and its directory and fix with chmod/chown","If the file no longer exists, refresh the selector list and retry — the session is already gone","Close processes locking the file (editors, sync clients) and retry","Inspect error.cause for the precise fs error code and address that specifically"],"exampleFix":"// before\nawait storage.deleteSessionWithArtifacts(session.path);\n// after\ntry {\n  await storage.deleteSessionWithArtifacts(session.path);\n} catch (e) {\n  if (isEnoent(e)) return true; // already deleted\n  throw e;\n}","handlingStrategy":"try-catch","validationCode":"await fs.access(session.path).catch(() => { throw new Error(`Session file missing: ${session.path}`) });\nawait fs.access(path.dirname(session.path), fs.constants.W_OK);","typeGuard":"function isDeletableSessionFile(p: string): boolean {\n  try { fs.accessSync(p, fs.constants.W_OK); return true; } catch { return false; }\n}","tryCatchPattern":"try {\n  await storage.deleteSessionWithArtifacts(session.path);\n} catch (err) {\n  if (isEnoent(err)) return; // already gone — treat as success\n  if (err.code === \"EPERM\" || err.code === \"EACCES\") fixPermissionsAndRetry(session.path);\n  else throw err;\n}","preventionTips":["Refresh the session list before deleting to avoid stale paths","Keep sync clients (Dropbox/OneDrive) from locking the sessions directory","Run with sufficient permissions for the sessions directory","Handle ENOENT as success so concurrent deletions don't surface errors"],"tags":["filesystem","session","deletion"],"backgroundTag":"file-delete-failed","analyzedSha":"969062200754ea02cfac922e5ebb8c608c079e15","analyzedAt":"2026-08-31T10:29:35.737Z","schemaVersion":2},"datasetVersion":"2026-08-31T14:17:45.589Z"}