Session: you-are-a-senior-functional-ullman-subagent-aebafa2c — 2026-04-22

Project: doctolib-doctolib · Branch: .invalid · Mode: ` · **Model:**claude-haiku-4-5-20251001`

Stats: 1 user messages, 14 tool calls, tools used: Bash, Read.

Conversation

Turn 1 — User

I'm designing a typed DmpApiError class for the @doctolib/dmp package at /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/. The DMP API returns structured error payloads like:

{
  "i_apiErrorCode": 1,
  "i_apiErrorType": 6000,
  "s_apiErrorContext": "DmpConnect-JS2 server",
  "s_apiErrorDescription": "Technical software error",
  "s_apiErrorExtendedInformations": "Operation timed out.",
  "s_apiErrorTypeDescription": "Software error",
  "s_status": "ERROR"
}

Please investigate:

1. Existing error classes: Are there any custom Error subclasses in packages/@doctolib/dmp/src/? Search for class.*Error, extends Error, BusinessError. Find BusinessError specifically — where is it defined, what fields does it have?

2. DmpApi.ts context — read the full find() private method (around lines 585–612 in packages/@doctolib/dmp/src/business/DmpApi.ts) to see the exact current code and how errors are currently thrown.

3. FrDmpTypes.ts — read the DmpResponse interface (around line 192) and FindDocumentsResponse (around line 407) to see all current fields.

4. Package exports — what does packages/@doctolib/dmp/src/index.ts export? I need to know if a new error class would be exported from the package.

5. How BusinessError is caught upstream — in packages/@doctolib/national-health-records/src/hooks/useSearchDocuments.ts, how are errors currently handled? Read the full file.

Report the exact code found for each point, with file paths and line numbers.

Turn 1 — Assistant

I'll help you investigate the error handling architecture in the DMP package. Let me search for all the information you need.

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src -type f -name "*.ts" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/index.ts /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/test-index.ts /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/types/FrDmpTypes.ts /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/types/DmpApi.ts /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/frDmpPayloadBuilders.ts /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/busine …(truncated, 1381 more chars)

Now let me search for error classes and BusinessError:

Tools used:

• Bash: grep -r "class.*Error" /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src --include="*.ts" | grep -v ".test.ts"

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/api/auth-types.ts:export class DmpAuthError extends Error {

Tools used:

• Bash: grep -r "extends Error" /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src --include="*.ts" | grep -v ".test.ts"

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/api/auth-types.ts:export class DmpAuthError extends Error {

Tools used:

• Bash: grep -r "BusinessError" /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src --include="*.ts"

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/CallDmpDelegate.test.ts:import { DmpAction, BusinessError } from '@doctolib/tpf-french-teleservices' /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/CallDmpDelegate.test.ts: it('should throw BusinessError when s_status is not OK', () => { /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/CallDmpDelegate.test.ts: expect(() => delegate.buildResponse(rawResponse) …(truncated, 2129 more chars)

Good! BusinessError is from an external package. Now let me read the key files:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/DmpApi.ts

Tool results:

→ result (ok): 1 / eslint-disable @typescript-eslint/no-non-null-assertion / 2 import type { Patient } from 'monolith_DEPRECATED/types/doctor/api/Patient' 3 import type { MedicalFolder } from '@doctolib/ehr-core' 4 import { blobToBase64 } from 'monolith_DEPRECATED/shared/BlobHelper' 5 import { getLoincCode, titlesByTypeAndKind } from 'monolith_DEPRECATED/models/document/document' 6 import { isMinor } from 'monolith_DEPRECATED/models/patient/patient' 7 import { isMedicalSynthesis } from 'monolith_DEPRECATED/c …(truncated, 34479 more chars)

Now let me read the other key files in parallel:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/types/FrDmpTypes.ts (1–450)

Tool results:

→ result (ok): 1 import type { MedicalFolder } from '@doctolib/ehr-core' 2 import type { DmpResult } from '@doctolib/tpf-french-teleservices' 3 import type { Patient } from 'monolith_DEPRECATED/types/doctor/api/Patient' 4 import type { DmpDocumentToAdd, FrDmpDocument } from '../business/FrDmpConfig' 5
6 export interface FrDmpSessionStorage { 7 sessionId: string 8 practiceIndex: number 9 healthcareSettings: string 10 createdAt: Date 11 } 12
13 // DMP Requests 14 export interface DmpRequest { 15 s_co …(truncated, 15477 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/index.ts

Tool results:

→ result (ok): 1 export { 2 type DmpDocumentItem, 3 type DmpDocumentToAdd, 4 type DmpDocumentToDelete, 5 type FrDmpDocument, 6 ItemType, 7 type UploadedDmpDocumentItem, 8 } from './business/FrDmpConfig' 9 export { getErrorMessage, getWarningMessage } from './business/DmpI18nMessage' 10 export type { 11 DmpApi, 12 DmpAuthor, 13 DmpDocument, 14 DmpDocumentContent, 15 DmpSetUpProps, 16 ShareProps, 17 UnshareProps, 18 SearchProps, 19 SearchResult, 20 DocumentStatusUpdateProps, 21 } …(truncated, 5765 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/api/auth-types.ts

Tool results:

→ result (ok): 1 export type DmpConnection = { 2 sessionId: string 3 healthcareSettings: string 4 } 5
6 export type PinValidationResult = { success: true } | { success: false; blocked: boolean; remainingAttempts?: number } 7
8 export type DmpAuthErrorCode = 9 | 'PIN_CANCELLED' 10 | 'PIN_BLOCKED' 11 | 'NO_CPX_READER' 12 | 'NO_LOCATION' 13 | 'NO_SITUATION' 14 | 'NO_LOCATION_MATCH' 15 | 'INCOMPLETE_CPX' 16 | 'SESSION_ERROR' 17 | 'CPX_CARD_ERROR' 18 | 'READER_ERROR' 19 | 'CPX_READ_ERROR …(truncated, 586 more chars)

Now let me check the upstream error handling in the useSearchDocuments hook:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/national-health-records/src/hooks/useSearchDocuments.ts

Tool results:

→ result (ok): 1 import { useQueryClient } from '@tanstack/react-query-v5' 2 import type { Patient } from 'monolith_DEPRECATED/types/doctor/api/Patient' 3 import { isFeatureEnabled } from '@doctolib/variation_management' 4 import type { NhrDocumentListVariant, MapFiltersToSearchDocumentsParams, ServerFilters } from '../variants/types' 5 import { useNationalHealthRecords } from './useNationalHealthRecords' 6 import { generateNhrDocuments } from '../mocks/generateNhrDocuments' 7 import { filterMockedDocuments } …(truncated, 2782 more chars)

Perfect! Now let me search for where BusinessError is imported from to verify it's external:

Tools used:

• Bash: grep -r "BusinessError" /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/tpf-french-teleservices 2>/dev/null | head -5

Tool results:

→ result (ok): (Bash completed with no output)

Let me check if that package exists:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -name "tpf-french-teleservices" -o -name "*teleservices*" 2>/dev/null | head -10

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/node_modules/@doctolib/tpf-french-teleservices /Users/USER/workspace/doctolib/doctolib/.claude/worktrees/crazy-volhard/packages/@doctolib/secure_messaging_core/src/services/fr/mssanteICanopee/types/french-teleservices-layer.ts

Tools used:

• Bash: grep -r "export class BusinessError" /Users/USER/workspace/doctolib/doctolib/node_modules/@doctolib/tpf-french-teleservices 2>/dev/null | head -3

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/node_modules/@doctolib/tpf-french-teleservices/dist/core/auth-errors.js:export class BusinessError extends FrenchTeleserviceError { /Users/USER/workspace/doctolib/doctolib/node_modules/@doctolib/tpf-french-teleservices/src/core/auth-errors.ts:export class BusinessError extends FrenchTeleserviceError {

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/node_modules/@doctolib/tpf-french-teleservices/src/core/auth-errors.ts

Tool results:

→ result (ok): 1 import { FrenchTeleserviceError } from './errors' 2
3 export class TransportError extends FrenchTeleserviceError { 4 constructor(serviceName: string, message?: string) { 5 super(message ?? 'A transport error occurred', 'TRANSPORT_ERROR', serviceName) 6 this.name = 'TransportError' 7 } 8 } 9
10 export class CpsAuthError extends FrenchTeleserviceError { 11 constructor(serviceName: string, message?: string) { 12 super(message ?? 'CPS card authentication failed', 'CPS_AUTH_ERRO …(truncated, 1025 more chars)

Perfect! Now let me look at the CallDmpDelegate to see how errors are currently thrown:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/CallDmpDelegate.ts

Tool results:

→ result (ok): 1 import type { ServiceDelegate, AuthContext, DmpPayload, DmpResult } from '@doctolib/tpf-french-teleservices' 2 import { DmpAction, BusinessError } from '@doctolib/tpf-french-teleservices' 3 import { STATUS_OK } from './FrDmpConstants' 4 import { mapCpsToPscPayload } from './mapCpsToPscPayload' 5
6 const ACTION_TO_COMMAND: Record<string, string> = { 7 [DmpAction.GetStatus]: 'hl_getDirectAuthenticationDMPStatus', 8 [DmpAction.FindDocuments]: 'hl_findDocuments', 9 [DmpAction.SendDocument]: …(truncated, 2570 more chars)

Excellent! Now I have all the information needed. Let me provide a comprehensive report.

Investigation Summary

I've thoroughly explored the DMP package error handling architecture. Here are my findings:

1. Existing Error Classes

DmpAuthError (Custom)

File: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/api/auth-types.ts (lines 21-29)

export class DmpAuthError extends Error {
  code: DmpAuthErrorCode

  constructor(code: DmpAuthErrorCode, message?: string) {
    super(message ?? code)
    this.name = 'DmpAuthError'
    this.code = code
  }
}

Fields: - code: DmpAuthErrorCode (e.g., 'PIN_CANCELLED', 'PIN_BLOCKED', 'NO_CPX_READER') - Inherits message from Error

BusinessError (External - from @doctolib/tpf-french-teleservices)

Source: /Users/USER/workspace/doctolib/doctolib/node_modules/@doctolib/tpf-french-teleservices/src/core/auth-errors.ts (lines 24-29)

export class BusinessError extends FrenchTeleserviceError {
  constructor(serviceName: string, message?: string) {
    super(message ?? 'The teleservice returned a business error', 'BUSINESS_ERROR', serviceName)
    this.name = 'BusinessError'
  }
}

Fields: - serviceName: Domain identifier (e.g., 'dmp') - message: Error description - Inherits from FrenchTeleserviceError (base class for teleservice errors)

2. DmpApi.ts - find() Private Method

File: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/DmpApi.ts (lines 585-612)

private async find(props: SearchProps): Promise<SearchResult> {
  if (this.dmpService) {
    const payload = buildFindDocumentsPayload(props)

    try {
      const response = await this.dmpService.call<FindDocumentsResponse>(DmpAction.FindDocuments, payload)
      return this.toSearchResult(response)
    } catch (e) {
      if (e instanceof BusinessError) {
        // Legacy does not throw on FindDocuments errors — it returns
        // the response as-is and toSearchResult handles empty Documents.
        return this.toSearchResult({ Documents: [] } as FindDocumentsResponse)
      }

      throw e
    }
  }

  const cachedSession = await getCachedDmpSession()

  if (!cachedSession) {
    throw new Error('No DMP session found')
  }

  const { sessionId } = cachedSession
  const findDocumentsResponse = await findDocuments({ sessionId, ...props })
  return this.toSearchResult(findDocumentsResponse)
}

Key Pattern: BusinessError is caught and returns empty { Documents: [] } rather than propagating. This is intentional legacy behavior.

3. FrDmpTypes.ts - Key Response Interfaces

File: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/types/FrDmpTypes.ts

DmpResponse (line 192-197)

export interface DmpResponse extends DmpResult {
  // Value "OK" for success.
  s_status?: string
  i_apiErrorCode?: string
  i_apiErrorType?: string
}

FindDocumentsResponse (line 407-412)

export interface FindDocumentsResponse extends DmpResponse {
  /** Array of document metadata matching the search criteria */
  Documents: DocumentMetadata[]
  /** Optional error message. Consider using i_apiErrorCode and i_apiErrorType from DmpResponse. */
  errorMessage?: string
}

Field Mapping from Your JSON Example: - i_apiErrorCode → i_apiErrorCode (mapped) - i_apiErrorType → i_apiErrorType (mapped) - s_apiErrorContext → NOT currently in interface - s_apiErrorDescription → NOT currently in interface - s_apiErrorExtendedInformations → NOT currently in interface - s_apiErrorTypeDescription → NOT currently in interface - s_status → s_status (mapped)

4. Package Exports

File: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/index.ts (lines 1-192)

Currently Exported: - DmpAuthError (line 77) ✓ - DmpApiImpl (line 22) - Various types and functions

NOT Exported: - BusinessError (from external package) - Any custom DMP API error class

Implication: A new DmpApiError class would need to be explicitly exported (line 77 area would be appropriate).

5. Upstream Error Handling

File: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/national-health-records/src/hooks/useSearchDocuments.ts (full file, 63 lines)

Current Error Handling (lines 53-56):

retry: (failureCount, error) => {
  if (error?.message?.includes('DMPAccessDeniedByExcededThreshold')) return false
  return failureCount < DMP_DOCUMENTS_MAX_RETRIES
}

Key Pattern: - Errors are caught by React Query's retry mechanism - Only checks error.message string for 'DMPAccessDeniedByExcededThreshold' - Uses generic retry strategy (3 max retries by default) - No typed error handling — relies on string matching in error messages

6. How BusinessError is Currently Thrown

File: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/dmp/src/business/CallDmpDelegate.ts (line 64)

if (response.s_status && response.s_status !== STATUS_OK) {
  throw new BusinessError('dmp', response.s_apiErrorDmpErrorCode ?? response.i_apiErrorCode ?? response.s_status)
}

This is the delegate validation layer — it throws BusinessError when the API response indicates an error.

Summary for Your Design

You have two error patterns in the codebase:

1. AuthError Pattern (DmpAuthError): Domain-specific, extends Error, has typed error codes
2. Generic BusinessError (external): Generic message-only pattern, used when delegate validates responses

For a typed DmpApiError class, you should: - Follow the DmpAuthError pattern (typed codes in a union type) - Include structured fields matching the API response (the full error context your JSON shows) - Make it exportable via index.ts - Update CallDmpDelegate.buildResponse() to throw it instead of generic BusinessError - Update upstream retry logic in useSearchDocuments.ts to check instanceof DmpApiError with typed codes