flowgraph/tasks/error-hierarchy.md at 5231522b5ecd8de777af6117170af409d5df3af8

Files

glm-5.1 466b121f77 decompose architecture into 38 atomic tasks across 12 parallel generations

Decompose the reviewed architecture specs into taskgraph-managed tasks:
- 2 setup tasks (project init, test infrastructure)
- 4 schema tasks (enums, node attrs, edge attrs, graph schemas)
- 1 error hierarchy task
- 6 graph tasks (FlowGraph class, 3 construction paths, queries, validation)
- 5 analysis tasks (type-compat, build-type-edges, ordering, template-validation, defaults)
- 5 component tasks (Operation, Sequential, Parallel, Conditional, Map)
- 2 host config tasks (GraphologyHostConfig, ReactiveHostConfig)
- 4 reactive tasks (WorkflowRoot, node-status, max-concurrency, retry-semantics)
- 3 review tasks (foundation, reactive-and-hosts, complete-library)
- 5 meta cluster tasks (schema, graph, component, reactive, analysis layers)
- 1 API exports task

Validated with taskgraph: zero cycles, 38 tasks, 12 parallel generations.
Critical path: 12 tasks through reactive execution layer.

2026-05-21 20:24:44 +00:00

2.2 KiB

Raw Blame History

id, name, status, depends_on, scope, risk, impact, level

name

status

depends_on

scope

risk

impact

level

error/hierarchy

Implement FlowgraphError hierarchy with all error classes and validation result types

pending

setup/project-init

narrow

low

component

implementation

Description

Implement the complete error hierarchy per error-handling.md. This includes thrown error classes (for construction invariant violations) and structured result types (for validation functions that never throw).

Acceptance Criteria

src/error/index.ts exports all error classes and result types
FlowgraphError base class extending Error with name: "FlowgraphError"
ConstructionError extending FlowgraphError — base for construction-time errors
DuplicateNodeError extending ConstructionError — key property
DuplicateEdgeError extending ConstructionError — source, target properties
NodeNotFoundError extending ConstructionError — key property
CycleError extending ConstructionError — cycles: string[][] property
InvalidInputError extending ConstructionError — errors: ValidationError[] property
InvalidTransitionError extending FlowgraphError — requestId, from: CallStatus, to: CallStatus properties
ValidationError interface — { type: "schema", nodeKey, field, message, value? }
GraphValidationError interface — { type: "graph", category: "cycle" | "dangling-reference" | "orphan-node" | "status-inconsistency", details: unknown }
TypeIncompatError interface — { type: "type-compat", sourceKey, targetKey, compatible: false, mismatches: TypeMismatch[] }
TypeMismatch interface — { path, expected, actual }
AnyValidationError union type — ValidationError | GraphValidationError | TypeIncompatError
Throwing vs returning contract clearly documented in JSDoc
Unit tests: each error class constructs correctly, result types validate, instanceof checks work

References

docs/architecture/error-handling.md — complete error hierarchy, throwing vs returning contract

Notes

To be filled by implementation agent

Summary

To be filled on completion

2.2 KiB Raw Blame History