Function classifyError

repos/effect/packages/sql/pg/src/PgClient.ts:910–950

(
  cause: unknown,
  message: string,
  operation: string
)

    return undefined
  }
  const code = cause.code
  return typeof code === "string" ? code : undefined
}

const pgConstraintFromCause = (cause: unknown): string => {
  if (typeof cause !== "object" || cause === null || !("constraint" in cause)) {
    return "unknown"
  }
  const constraint = cause.constraint
  if (typeof constraint !== "string") {
    return "unknown"
  }
  const normalized = constraint.trim()
  return normalized.length === 0 ? "unknown" : normalized
}

const classifyError = (
  cause: unknown,
  message: string,
  operation: string
) => {
  const props = { cause, message, operation }
  const code = pgCodeFromCause(cause)
  if (code !== undefined) {
    if (code.startsWith("08")) {
      return new ConnectionError(props)
    }
    if (code.startsWith("28")) {
      return new AuthenticationError(props)
    }
    if (code === "42501") {
      return new AuthorizationError(props)
    }
    if (code.startsWith("42")) {
      return new SqlSyntaxError(props)
    }
    if (code === "23505") {
      return new UniqueViolation({ ...props, constraint: pgConstraintFromCause(cause) })
    }
    if (code.startsWith("23")) {
      return new ConstraintError(props)
    }
    if (code === "40P01") {
      return new DeadlockError(props)