taskgraph_ts/tasks/implementation/graph/export.md

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

id	name	status	depends_on	scope	risk	impact	level
graph/export	Implement TaskGraph export methods (export, toJSON)	completed	graph/taskgraph-class	single	trivial	component	implementation

Description

Implement the export() and toJSON() methods on TaskGraph. These wrap graphology's export() to produce TaskGraphSerialized output.

Acceptance Criteria

• export(): TaskGraphSerialized — wraps graph.export() and validates the output conforms to the TaskGraphSerialized schema
• toJSON(): TaskGraphSerialized — alias for export() (enables JSON.stringify(graph) to work)
• Exported data includes all node attributes and edge attributes (including qualityRetention)
• Round-trip: TaskGraph.fromJSON(graph.export()) produces an equivalent graph
• Unit test: create graph, add tasks/edges, export, round-trip through fromJSON, verify equivalence

References

• docs/architecture/api-surface.md — export/toJSON methods
• docs/architecture/schemas.md — TaskGraphSerialized schema

Notes

Straightforward implementation. export() delegates to this._graph.export() and casts to TaskGraphSerialized. toJSON() is a simple alias so JSON.stringify(graph) works automatically.

Summary

Implemented export() and toJSON() methods on TaskGraph class.

• Modified: src/graph/construction.ts — added export() and toJSON() methods
• Modified: test/graph.test.ts — added 10 tests covering export, toJSON, round-trip, JSON.stringify integration
• Tests: 266, all passing (lint clean)