* refactor(#1771): ADR-1769 Phase 1 — STATE.md Transition Module substrate + beginPhase Lands the Phase 1 substrate per ADR-1769: - src/state-transition.cts (new Module): - Field-classification table (FieldClass enum + FIELD_CLASSIFICATION rows) - STATE_MD_SECTIONS constants block - Pure transitionCore(content, intent, deps) dispatch - beginPhase intent implementation (first-time + #3127 resume paths) - src/state.cts:cmdStateBeginPhase — collapses ~190 lines to a thin dispatch onto transitionCore via readModifyWriteStateMd. The lock, no-op write guard, and #1230 post-sync delta heuristic stay in the RMW seam; the body-mutation policy moves to transitionCore. - tests/state-transition.test.cjs (24 tests): - Substrate invariants (table enum, section constants) - Characterization: 6 first-time body field updates - Characterization: 5 #3127 idempotency-guard resume behaviors - Characterization: 3 Current Position section mutations - Characterization: Current focus body text line (#1104) - Property (RULESET.TESTS.property-based-testing): beginPhase status propagation + FIELD_CLASSIFICATION own-property contract - Resume Current Position mutation (preserves Plan/Phase/Status) No external behavior change. Full state.test.cjs regression (177 tests) plus bug-3127/#3242/#905/#948 pass. Property tests surfaced two pre-existing quirks (state-document.cjs greedy \s* on whitespace-only field values; Object.prototype method leakage on FIELD_CLASSIFICATION lookups for strings like 'toString') — documented in test comments; fix-out-of-scope for Phase 1. Closes #1771 * refactor(#1771): ADR-1769 Phase 1 codex review corrections Addresses 3 blocking findings from codex gpt-5.5/high review: 1. FIELD_CLASSIFICATION shape (state-transition.cts): - Was flat FieldClass enum (collapsed source + preservation) - Now two-column {source, preservation} rows per ADR-1769 §4 - Added missing fields verified via Memtrace against buildStateFrontmatter (state.cts:1633-1653): gsd_state_version, last_updated, last_activity_desc, progress.{total_phases, completed_phases, total_plans, completed_plans, percent} - Field 2-7 preservation dispatch can now consult the table 2. Prototype-pollution hardening (state-transition.cts): - Table is now Object.freeze(Object.assign(Object.create(null), {...})) - getFieldClassification() helper uses Object.hasOwn; returns null for inherited prototype methods (toString/valueOf/__proto__) - Old code: FIELD_CLASSIFICATION['toString'] returned the function 3. STATE_MD_SECTIONS aligned to canonical template: - Verified against gsd-core/templates/state.md via Memtrace - Was: 8 entries including non-template sections (## Session, ## Decisions, ## Operator Next Steps, ## Session Log, ## Roadmap Evolution) - Now: 6 canonical top-level sections (## Project Reference, ## Current Position, ## Performance Metrics, ## Accumulated Context, ## Deferred Items, ## Session Continuity) Also: beginPhase now consults getFieldClassification() per touched field (codex finding: 'table not consulted by transitionCore'). Unknown fields raise immediately — adding a field without a table row is caught at runtime. Repo-hygiene catches from gsd-test (not node --test, which missed these): - gsd-core/bin/lib/state-transition.cjs added to eslint.config.mjs ignore list (ADR-457 tsc-generated) - docs/INVENTORY-MANIFEST.json regenerated via node scripts/gen-inventory-manifest.cjs --write Property test for Object.prototype leakage tightened to verify getFieldClassification() returns null for toString/valueOf/__proto__. Ref #1771 * fix(#1771): cast Object.create(null) to satisfy @typescript-eslint/no-unsafe-assignment ESLint CI failed on src/state-transition.cts:72:14 — Object.create(null) returns `any`, which leaked through Object.assign to the typed `FIELD_CLASSIFICATION` declaration. Adding an explicit cast to `Record<string, FieldClassification>` eliminates the unsafe-assignment while preserving the null-prototype protection codex review recommended. gsd-test: 21888/21888 PASS. * fix(#1771): add 'see #1771' to allow-test-rule exemption per ADR-456 CI lint-allow-test-rule-refs failed: 'New allow-test-rule exemption without an issue ref — add `see #NNN` per ADR-456'. Updated comment on tests/state-transition.test.cjs to reference the Phase 1 issue. * fix(#1771): remove unnecessary allow-test-rule exemption The exemption was added speculatively. The test file does not use readFileSync + .includes()/.match()/.startsWith() on source content — it calls transitionCore() with string literals and verifies results via stateExtractField() and array .includes() on the updated[] array. No exemption needed.
This commit is contained in:
Tom Boucher
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src/state-transition.cts
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436
src/state-transition.cts
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/**
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* STATE.md Transition Module — ADR-1769.
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*
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* Phase 1 substrate: field-classification table, section constants, the pure
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* `transitionCore` dispatch, and the `beginPhase` intent (migrating
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* `cmdStateBeginPhase` in state.cts onto this seam).
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*
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* Sibling/super-module of the STATE.md Document Module (state-document.cjs):
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* consumes its `stateExtractField` / `stateReplaceField` primitives. Body
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* section headings live as constants here (single writer after migration).
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*
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* Pure core + injected I/O (ADR-1769 §3): the exported `transitionCore` is a
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* pure function `(content, intent, deps) → result`; adapters that own locks,
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* file I/O, and the disk-scan wrap it.
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*/
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// eslint-disable-next-line @typescript-eslint/no-require-imports
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import frontmatter = require('./frontmatter.cjs');
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import { stateReplaceField, stateExtractField } from './state-document.cjs';
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import { tokenizeHeadings } from './markdown-sectionizer.cjs';
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// eslint-disable-next-line @typescript-eslint/no-require-imports
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import phaseIdMod = require('./phase-id.cjs');
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const { extractFrontmatter, reconstructFrontmatter } = frontmatter;
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const { escapeRegex } = phaseIdMod;
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// Stop predicate for section-body slicing: a level-2+ heading ends the section.
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const STOP_H2_PLUS = (lv: number): boolean => lv >= 2;
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// ----------------------------------------------------------------------------
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// Field-classification table (ADR-1769 §4)
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// ----------------------------------------------------------------------------
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//
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// Two-column shape per ADR: `{ source, preservation }`. Source alone is
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// insufficient because two fields can share a source but need different
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// preservation rules (e.g. `current_phase` and `last_activity` are both
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// `derived-from-body`, but `current_phase` preserves-when-unchanged per #1230
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// while `last_activity` always re-derives). Codex review of Phase 1 caught
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// the collapsed-enum shape as a substrate defect that wouldn't survive
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// Phases 2–7.
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export type FieldSource =
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| 'body' // value is derived from a body field (Phase:, Status:, etc.)
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| 'disk' // value is derived from a disk scan (.planning/phases/* counts)
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| 'external' // value is derived from an external file (ROADMAP.md milestone)
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| 'curated' // value is set by humans/tools; preserve unless explicitly overwritten
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| 'free'; // caller's word is law (no preservation)
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export type FieldPreservation =
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| 'derive' // always re-derive from source
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| 'preserve-when-unchanged' // #1230 delta heuristic: keep existing if body source field unchanged
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| 'preserve-always' // never overwrite unless the caller explicitly names this field
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| 'preserve-if-placeholder' // overwrite only when derived value is a known placeholder (#948)
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| 'clear'; // remove the field entirely
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export type FieldClassification = { source: FieldSource; preservation: FieldPreservation };
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/**
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* Single source of truth for "which fields win when frontmatter and body
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* disagree". Transitions declare which body fields they touch; the core
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* consults the table to apply the preservation policy uniformly.
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*
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* Adding a new STATE.md field = one row here, not 9 transition edits.
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*
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* Field set verified against `buildStateFrontmatter` (state.cts:1474) — every
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* frontmatter key emitted there has a row here.
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*
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* Frozen null-prototype object: prevents prototype-pollution lookups
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* (`FIELD_CLASSIFICATION['toString']` returns undefined, not the inherited
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* function). Use `getFieldClassification()` for lookups.
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*/
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export const FIELD_CLASSIFICATION: Readonly<Record<string, FieldClassification>> = Object.freeze(
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Object.assign(
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Object.create(null) as Record<string, FieldClassification>,
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{
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// Schema
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gsd_state_version: { source: 'free', preservation: 'derive' } as FieldClassification,
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// Milestone (external — from ROADMAP.md)
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milestone: { source: 'external', preservation: 'preserve-if-placeholder' } as FieldClassification,
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milestone_name: { source: 'external', preservation: 'preserve-if-placeholder' } as FieldClassification,
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// Phase / plan position (body-derived)
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current_phase: { source: 'body', preservation: 'preserve-when-unchanged' } as FieldClassification,
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current_phase_name: { source: 'curated', preservation: 'preserve-always' } as FieldClassification, // #1743, #1695
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current_plan: { source: 'body', preservation: 'preserve-when-unchanged' } as FieldClassification,
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// Status / lifecycle (body-derived; #1230 delta heuristic applies)
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status: { source: 'body', preservation: 'preserve-when-unchanged' } as FieldClassification,
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stopped_at: { source: 'body', preservation: 'preserve-when-unchanged' } as FieldClassification,
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paused_at: { source: 'body', preservation: 'preserve-when-unchanged' } as FieldClassification,
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// Activity log
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last_updated: { source: 'free', preservation: 'derive' } as FieldClassification, // realClock.nowIso()
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last_activity: { source: 'body', preservation: 'derive' } as FieldClassification, // always refresh on transition
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last_activity_desc: { source: 'body', preservation: 'preserve-when-unchanged' } as FieldClassification,
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// Progress block (disk-derived, except the curated progress ratchet)
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progress: { source: 'curated', preservation: 'preserve-always' } as FieldClassification, // #3242, #1446
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'progress.total_phases': { source: 'disk', preservation: 'derive' } as FieldClassification,
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'progress.completed_phases': { source: 'disk', preservation: 'derive' } as FieldClassification,
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'progress.total_plans': { source: 'disk', preservation: 'derive' } as FieldClassification,
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'progress.completed_plans': { source: 'disk', preservation: 'derive' } as FieldClassification,
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'progress.percent': { source: 'disk', preservation: 'derive' } as FieldClassification,
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} satisfies Record<string, FieldClassification>,
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),
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);
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/**
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* Own-property classification lookup. Returns `null` for unknown fields
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* (including inherited prototype methods like `toString`/`valueOf`).
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*/
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export function getFieldClassification(field: string): FieldClassification | null {
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if (!Object.prototype.hasOwnProperty.call(FIELD_CLASSIFICATION, field)) return null;
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return FIELD_CLASSIFICATION[field];
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}
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// ----------------------------------------------------------------------------
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// Body section constants (ADR-1769 §6 — single writer after migration)
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// ----------------------------------------------------------------------------
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/**
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* Top-level STATE.md section headings (H2). Aligned byte-for-byte with the
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* canonical template at `gsd-core/templates/state.md`. Sub-headings (H3) like
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* `### Decisions` / `### Pending Todos` / `### Blockers/Concerns` live under
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* `## Accumulated Context` and are not mutated by any Phase 1–7 transition;
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* they will be added here if a future transition needs them.
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*
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* Verified against `gsd-core/templates/state.md` (codex Phase 1 review).
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*/
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export const STATE_MD_SECTIONS = {
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projectReference: '## Project Reference',
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currentPosition: '## Current Position',
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performanceMetrics: '## Performance Metrics',
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accumulatedContext: '## Accumulated Context',
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deferredItems: '## Deferred Items',
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sessionContinuity: '## Session Continuity',
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} as const;
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// ----------------------------------------------------------------------------
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// Intent + deps + result types (ADR-1769 §3)
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// ----------------------------------------------------------------------------
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export type ProgressRecord = Record<string, unknown>;
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export type StateTransitionDeps = {
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progressProvider: () => ProgressRecord | null;
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clock: { today: () => string; nowIso: () => string };
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};
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export type StateTransitionIntent =
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| { kind: 'beginPhase'; phaseNumber: string | number; phaseName: string | null; planCount: number | null };
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// Phases 2–7 add the remaining 9 intent kinds to this discriminated union.
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export type StateTransitionResult = { content: string; updated: string[] };
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// ----------------------------------------------------------------------------
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// transitionCore — pure dispatch (ADR-1769 §3)
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// ----------------------------------------------------------------------------
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/**
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* Pure transition core. `(content, intent, deps) → result`.
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*
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* Discriminated-union dispatch via plain `switch` (ADR-1769 §2.7 Kernighan's
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* Law: debuggability over conciseness; the substrate sets the pattern).
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*
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* Phases 2–7 add cases for the remaining 9 intent kinds. A missing case is
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* a compile-time error (the function would not return on that path).
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*/
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export function transitionCore(
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content: string,
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intent: StateTransitionIntent,
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deps: StateTransitionDeps,
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): StateTransitionResult {
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switch (intent.kind) {
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case 'beginPhase':
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return beginPhaseCore(content, intent, deps);
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}
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}
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// ----------------------------------------------------------------------------
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// beginPhase — intent implementation (Phase 1)
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// ----------------------------------------------------------------------------
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/**
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* Apply a `beginPhase` transition to STATE.md content.
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*
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* Phase 1 scope (this file): the Status field update only. Subsequent
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* behaviors land via RED-GREEN cycles per the ADR-1769 migration plan:
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* - Current Phase, Current Phase Name, Current Plan, Total Plans
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* - Current Position section mutation
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* - Idempotency guard (#3127)
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* - Resume vs first-time branching
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* - #1255 / #1257 format-detection parity
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*
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* Adapters that acquire the STATE.md lock and call this core live in
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* state.cts and consume the existing `readModifyWriteStateMd` post-sync
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* machinery (preserves the #1230 delta heuristic without re-implementing it).
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*/
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function beginPhaseCore(
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content: string,
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intent: { kind: 'beginPhase'; phaseNumber: string | number; phaseName: string | null; planCount: number | null },
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deps: StateTransitionDeps,
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): StateTransitionResult {
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const updated: string[] = [];
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// #1255: body-field replacements operate on body only (frontmatter stripped),
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// not on the full content. The YAML `status:` key matches `^Status:\s*`
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// before the body pipe-table row if full content is passed.
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const existingFm = extractFrontmatter(content) as Record<string, unknown>;
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const hasFrontmatter = Object.keys(existingFm).length > 0;
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let body = stripFrontmatter(content);
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const reassemble = (b: string): string =>
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hasFrontmatter
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? `---\n${reconstructFrontmatter(existingFm as unknown as Frontmatter)}\n---\n\n${b}`
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: b;
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const today = deps.clock.today();
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// Consult the field-classification table for the frontmatter keys this
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// transition touches (codex Phase 1 review: "table not consulted by
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// transitionCore"). The table tracks FRONTMATTER keys (lowercase: `status`,
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// `current_phase`, `last_activity`); body field names like `Status` /
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// `Current Phase` are aliases and aren't enforced here — they're driven by
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// the first-time/resume branching below, which encodes the same rules.
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// Phase 2+ will dispatch preservation based on this lookup.
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for (const fmKey of ['status', 'current_phase', 'current_plan', 'last_activity']) {
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const cls = getFieldClassification(fmKey);
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if (cls === null) {
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throw new Error(
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`transitionCore beginPhase: frontmatter key ${JSON.stringify(fmKey)} is not in FIELD_CLASSIFICATION; ` +
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`add a row per ADR-1769 §4 before touching it.`,
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);
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}
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}
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// Helper: try to replace a body field; push to `updated` on success.
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// Body field names (Title Case: 'Status', 'Current Phase') are not in the
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// table — they're body-side aliases of classified frontmatter keys.
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const tryField = (name: string, value: string): void => {
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const replaced = stateReplaceField(body, name, value);
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if (replaced !== null) {
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body = replaced;
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updated.push(name);
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}
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};
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// #3127 idempotency guard: if Status already contains "Executing Phase N" for
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// the current phase number, this is a resume (e.g. --wave N continue). Skip
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// the first-time-only fields so mid-flight state (Current Plan, Total Plans,
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// Current Phase Name, Last Activity Description) is preserved.
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// Extract from body (not full content) so the YAML `status:` key cannot
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// shadow the body Status field (#1255).
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const currentStatus = stateExtractField(body, 'Status') || '';
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const isAlreadyExecuting = new RegExp(
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`Executing Phase\\s+${escapeRegex(String(intent.phaseNumber))}\\b`,
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'i',
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).test(currentStatus);
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// Status update (applies on both first-time and resume — Status is always refreshed).
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tryField('Status', `Executing Phase ${intent.phaseNumber}`);
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// Last Activity date — safe to refresh on resume (tracks when execute-phase ran).
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tryField('Last Activity', today);
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if (!isAlreadyExecuting) {
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// First-time execution: set all progress fields.
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tryField('Last Activity Description', `Phase ${intent.phaseNumber} execution started`);
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tryField('Current Phase', String(intent.phaseNumber));
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if (intent.phaseName) {
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tryField('Current Phase Name', intent.phaseName);
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}
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tryField('Current Plan', '1');
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if (intent.planCount) {
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tryField('Total Plans in Phase', String(intent.planCount));
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}
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// **Current focus:** body text line (#1104).
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const focusLabel = intent.phaseName
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? `Phase ${intent.phaseNumber} — ${intent.phaseName}`
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: `Phase ${intent.phaseNumber}`;
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const focusPattern = /(\*\*Current focus:\*\*\s*).*/i;
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if (focusPattern.test(body)) {
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body = body.replace(focusPattern, (_match, prefix: string) => `${prefix}${focusLabel}`);
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updated.push('Current focus');
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}
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// ## Current Position section mutation (#1104, #1365).
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// ADR-1372 T6: tokenizeHeadings + offset splicing (replaceSection adoption
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// deferred to a later phase). Mirrors state.cts:2261-2324 byte-for-behaviour.
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body = mutateCurrentPositionFirstTime(body, intent, today, updated);
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} else {
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// Resume path: only update Last activity timestamp in Current Position
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// (do not touch Plan:, Phase:, Status:, stopped_at, progress.percent).
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body = mutateCurrentPositionResume(body, intent, today, updated);
|
||||
}
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||||
|
||||
return { content: reassemble(body), updated };
|
||||
}
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||||
|
||||
// Local frontmatter type aliases matching frontmatter.cts so we can call
|
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// reconstructFrontmatter without cross-module type re-exports.
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type FrontmatterValue = string | string[] | Record<string, unknown>;
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||||
type Frontmatter = Record<string, FrontmatterValue>;
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||||
/**
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* Find the `## Current Position` section, return its `{start, end}` byte
|
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* offsets in `body` (end is exclusive — first byte of the next section or
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* body.length). Returns `null` when the section is absent.
|
||||
*
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* ADR-1372 T6: tokenizeHeadings-based locator (fence-aware).
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*/
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function locateCurrentPosition(body: string): { start: number; end: number } | null {
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const hs = tokenizeHeadings(body);
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const idx = hs.findIndex(h => h.level === 2 && /^current\s+position$/i.test(h.text));
|
||||
if (idx === -1) return null;
|
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const h = hs[idx];
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||||
const lines = body.split('\n');
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||||
const hl = lines[h.line - 1];
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||||
const start = h.offset + hl.length + 1;
|
||||
let end = body.length;
|
||||
for (let j = idx + 1; j < hs.length; j++) {
|
||||
if (STOP_H2_PLUS(hs[j].level)) { end = hs[j].offset - 1; break; }
|
||||
}
|
||||
return { start, end };
|
||||
}
|
||||
|
||||
/**
|
||||
* First-time ## Current Position mutation: update Phase / Plan / Status /
|
||||
* Last activity lines. Mirrors state.cts:2261-2324 byte-for-behaviour
|
||||
* (inline regex first, pipe-table fallback via stateReplaceField — #1257).
|
||||
*/
|
||||
function mutateCurrentPositionFirstTime(
|
||||
body: string,
|
||||
intent: { phaseNumber: string | number; phaseName: string | null; planCount: number | null },
|
||||
today: string,
|
||||
updated: string[],
|
||||
): string {
|
||||
const span = locateCurrentPosition(body);
|
||||
if (span === null) return body;
|
||||
let sectionBody = body.slice(span.start, span.end);
|
||||
|
||||
// Phase line — inline first, then pipe-table fallback (#1257).
|
||||
const phaseLabel = `${intent.phaseNumber}${intent.phaseName ? ` (${intent.phaseName})` : ''} — EXECUTING`;
|
||||
if (/^Phase:/m.test(sectionBody)) {
|
||||
sectionBody = sectionBody.replace(/^Phase:.*$/m, `Phase: ${phaseLabel}`);
|
||||
} else {
|
||||
const replaced = stateReplaceField(sectionBody, 'Phase', phaseLabel);
|
||||
if (replaced !== null) sectionBody = replaced;
|
||||
}
|
||||
|
||||
// Plan line.
|
||||
const planValue = `1 of ${intent.planCount || '?'}`;
|
||||
if (/^Plan:/m.test(sectionBody)) {
|
||||
sectionBody = sectionBody.replace(/^Plan:.*$/m, `Plan: ${planValue}`);
|
||||
} else {
|
||||
const replaced = stateReplaceField(sectionBody, 'Plan', planValue);
|
||||
if (replaced !== null) sectionBody = replaced;
|
||||
}
|
||||
|
||||
// Status line.
|
||||
const statusValue = `Executing Phase ${intent.phaseNumber}`;
|
||||
if (/^Status:/m.test(sectionBody)) {
|
||||
sectionBody = sectionBody.replace(/^Status:.*$/m, `Status: ${statusValue}`);
|
||||
} else {
|
||||
const replaced = stateReplaceField(sectionBody, 'Status', statusValue);
|
||||
if (replaced !== null) sectionBody = replaced;
|
||||
}
|
||||
|
||||
// Last activity line. The inline value carries date + narrative.
|
||||
const activityValue = `${today} — Phase ${intent.phaseNumber} execution started`;
|
||||
if (/^Last activity:/im.test(sectionBody)) {
|
||||
sectionBody = sectionBody.replace(/^Last activity:.*$/im, `Last activity: ${activityValue}`);
|
||||
} else {
|
||||
const replaced =
|
||||
stateReplaceField(sectionBody, 'Last Activity', activityValue) ??
|
||||
stateReplaceField(sectionBody, 'Last activity', activityValue);
|
||||
if (replaced !== null) sectionBody = replaced;
|
||||
}
|
||||
|
||||
updated.push('Current Position');
|
||||
return body.slice(0, span.start) + sectionBody + body.slice(span.end);
|
||||
}
|
||||
|
||||
/**
|
||||
* Resume ## Current Position mutation: only update Last activity line
|
||||
* (preserves Plan/Phase/Status — #3127). Mirrors state.cts:2329-2363
|
||||
* byte-for-behaviour.
|
||||
*/
|
||||
function mutateCurrentPositionResume(
|
||||
body: string,
|
||||
intent: { phaseNumber: string | number },
|
||||
today: string,
|
||||
updated: string[],
|
||||
): string {
|
||||
const span = locateCurrentPosition(body);
|
||||
if (span === null) return body;
|
||||
let sectionBody = body.slice(span.start, span.end);
|
||||
|
||||
const resumeActivity = `Last activity: ${today} — Phase ${intent.phaseNumber} execution resumed (wave continue)`;
|
||||
if (/^Last activity:/im.test(sectionBody)) {
|
||||
sectionBody = sectionBody.replace(/^Last activity:.*$/im, resumeActivity);
|
||||
updated.push('Last activity (resume)');
|
||||
} else {
|
||||
// Pipe-table format fallback (#1255).
|
||||
const replaced =
|
||||
stateReplaceField(sectionBody, 'Last Activity', resumeActivity) ??
|
||||
stateReplaceField(sectionBody, 'Last activity', resumeActivity);
|
||||
if (replaced !== null) {
|
||||
sectionBody = replaced;
|
||||
updated.push('Last activity (resume)');
|
||||
}
|
||||
}
|
||||
|
||||
return body.slice(0, span.start) + sectionBody + body.slice(span.end);
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip ALL frontmatter blocks from the start of `content`.
|
||||
*
|
||||
* TODO (ADR-1769 follow-up): move to `frontmatter.cjs` or `state-document.cjs`
|
||||
* so it's a shared primitive. Inlined here in Phase 1 to avoid touching
|
||||
* `state.cjs` (which is the migration target itself) and to keep the Phase 1
|
||||
* diff contained. Body is byte-identical to `state.cts:1653 stripFrontmatter`
|
||||
* (same CRLF + stacked-block handling).
|
||||
*/
|
||||
function stripFrontmatter(content: string): string {
|
||||
let result = content;
|
||||
while (true) {
|
||||
const stripped = result.replace(/^\s*---\r?\n[\s\S]*?\r?\n---\s*/, '');
|
||||
if (stripped === result) break;
|
||||
result = stripped;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
Reference in New Issue
Block a user