Slate v2 Total Runtime Error Policy Ralplan

1. Verdict

The previous plan was directionally right but too small.

Do not ship a tryToDOMRange family as the public fix. That still makes the API look like JavaScript exception plumbing. The better shape is a strict vs resolver split:

editor.dom.toDOMRange(range); // strict invariant API, may throw
editor.dom.resolveDOMRange(range); // runtime/app API, returns DOMRange | null

Hard cuts:

• Future public API must not teach suppressThrow.
• Remove public suppressThrow.
• Do not add public tryTo* helpers.
• Do not let Slate React runtime code call strict DOM projection helpers for recoverable browser/model gaps.
• Do not rely on React error boundaries, scrubbers, or app-authored catches as the recovery architecture.

slate-react core runtime should never throw for recoverable DOM/model projection. Strict throws can remain in direct slate-dom APIs, tests, developer misuse guards, and fatal invariant handlers. They must not be normal edge-case handling inside selection, focus, beforeinput, Android, clipboard, drop, overlay, or example flows.

2. Why null, Not undefined

Use null.

Reason:

• Slate already models absent selection/range as Range | null.
• Current resolver-like code in Slate v2 already returns null in places: RangeApi.transform, bookmarks, annotations, DOM coverage, and the current suppressThrow paths.
• DOM APIs and ProseMirror runtime APIs use null for "not resolvable" states: Selection.focusNode, nodeDOM, posAtCoords, and selectionFromDOM.
• undefined is better for optional inputs, omitted config, and cache misses. DOM projection failure is an explicit negative result, not an omitted value.

Public resolver rule:

type Resolve<T> = T | null;

No undefined return values for public DOM projection resolvers.

3. Original Source Inventory

Original public DOM surface before this plan landed:

• DOMEditorCapability exposes strict findEventRange, findPath, toDOMNode, toDOMPoint, toDOMRange, toSlateNode, toSlatePoint, and toSlateRange at .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:69-108.
• toSlatePoint and toSlateRange exposed suppressThrow in public option objects at .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:94-108 and wrapper exports at :1558-1580.

Original suppressThrow surface:

Current strict DOM projection calls outside dom-editor.ts:

Hot examples of the wrong original shape:

• ReactEditor.toSlateRange(... suppressThrow: true) in selection controller at .tmp/slate-v2/packages/slate-react/src/editable/selection-controller.ts:284-287, :491-495, and :608-612.
• Strict ReactEditor.toDOMRange(editor, selection) fallback in selection export at .tmp/slate-v2/packages/slate-react/src/editable/selection-controller.ts:737-742.
• Catch-and-ignore around strict toDOMRange in selection repair at .tmp/slate-v2/packages/slate-react/src/editable/selection-reconciler.ts:930-935.
• Strict ReactEditor.toDOMPoint in native input strategy at .tmp/slate-v2/packages/slate-react/src/editable/native-input-strategy.ts:56-57.
• Strict ReactEditor.findEventRange in drop handling at .tmp/slate-v2/packages/slate-react/src/editable/clipboard-input-strategy.ts:440-442.
• Mentions example catch around editor.dom.toDOMRange(target) at .tmp/slate-v2/site/examples/ts/mentions.tsx:123-129.

4. Public API Target

Keep strict APIs:

editor.dom.toDOMNode(node): HTMLElement
editor.dom.toDOMPoint(point): DOMPoint
editor.dom.toDOMRange(range): DOMRange
editor.dom.toSlateNode(domNode): Node
editor.dom.toSlatePoint(domPoint, options): Point
editor.dom.toSlateRange(domRange, options): Range
editor.dom.findPath(node): Path
editor.dom.findEventRange(event): Range

Add resolver APIs:

editor.dom.resolveDOMNode(node): HTMLElement | null
editor.dom.resolveDOMPoint(point): DOMPoint | null
editor.dom.resolveDOMRange(range): DOMRange | null
editor.dom.resolveSlateNode(domNode): Node | null
editor.dom.resolveSlatePoint(domPoint, options): Point | null
editor.dom.resolveSlateRange(domRange, options): Range | null
editor.dom.resolvePath(node): Path | null
editor.dom.resolveEventRange(event): Range | null
editor.dom.resolveRangeRect(range): DOMRect | null

Future public API cuts:

• Remove suppressThrow from public options.
• Do not publish tryToDOMRange, tryFindPath, or try* aliases.
• Do not publish rich error result objects by default.
• Do not make strict APIs nullable. The strict names still mean invariant assertion.

Resolver names are intentionally boring. "Resolve" reads like an editor API. "Try" reads like a catch wrapper.

5. Internal Resolver Target

Do not implement resolvers as naked try { strict() } catch { return null }. That would preserve the bad architecture behind nicer names.

Factor strict helpers through shared resolvers:

type DOMResolvePhase =
  | "slate-node-to-dom-node"
  | "slate-point-to-dom-point"
  | "slate-range-to-dom-range"
  | "dom-node-to-slate-node"
  | "dom-point-to-slate-point"
  | "dom-range-to-slate-range"
  | "dom-event-to-slate-range"
  | "range-to-rect";

type DOMResolveReason =
  | "unmounted-node"
  | "stale-node-map"
  | "foreign-dom"
  | "nested-editor-boundary"
  | "shadow-boundary"
  | "dom-coverage-boundary"
  | "void-boundary"
  | "composition-transient"
  | "invalid-dom-selection"
  | "invalid-model-range"
  | "missing-caret-range"
  | "unsupported-app-dom"
  | "internal-invariant";

type DOMResolveResult<T> =
  | { ok: true; value: T }
  | {
      ok: false;
      phase: DOMResolvePhase;
      reason: DOMResolveReason;
      recoverable: boolean;
    };

Public resolvers unwrap recoverable failures to null.

Strict helpers unwrap success or throw a typed DOMResolveError.

Tests/debug can inspect DOMResolveResult<T> through internal helpers.

6. Slate React Runtime Law

packages/slate-react/src/editable/**, packages/slate-react/src/hooks/android-input-manager/**, and browser event strategy files must not call strict DOM projection helpers for runtime recovery.

Forbidden in runtime code:

ReactEditor.toDOMPoint(...)
ReactEditor.toDOMRange(...)
ReactEditor.toSlatePoint(...)
ReactEditor.toSlateRange(...)
ReactEditor.toSlateNode(...)
ReactEditor.findPath(...)
ReactEditor.findEventRange(...)

Allowed only in strict tests, dev-only missing-render validation, or direct public API examples that intentionally demonstrate invariant failure.

Runtime replacements:

Static proof:

cd /Users/zbeyens/git/slate-v2
rg -n "ReactEditor\\.(toDOMPoint|toDOMRange|toSlatePoint|toSlateRange|toSlateNode|findPath|findEventRange)" packages/slate-react/src/editable packages/slate-react/src/hooks/android-input-manager

After execution, this grep must return no runtime recovery call sites. If one remains, it needs a line-local invariant comment and a test proving it cannot be a recoverable browser edge case.

7. Surface Coverage

| Surface | Target behavior | | ------------------------- | ---------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- | | Selection import | Foreign, nested, stale, multi-range, app-owned, and shadow selections resolve to Range | null; no thrown recoverable DOM errors. | | Selection export | Model selection projects to DOM range or returns null; Slate keeps model selection and waits for next stable commit. | | Focus restore | Unmounted or stale DOM point returns null; focus path schedules retry or no-ops. | | Scroll into view | Missing DOM range/rect returns null; scroll is skipped for that frame. | | Beforeinput target ranges | StaticRange/Selection resolves to Range | null; native/model decision uses null as "DOM target not trusted." | | Android input manager | Direct-DOM-sync heuristics use nullable DOM point/range; no catch wrappers. | | Clipboard copy | If DOM range is unavailable, write model-backed Slate fragment data; visible HTML enrichment is best effort. | | Drop/drag | Event range resolves to model range or null; drop is skipped or uses model fallback instead of crashing. | | DOM coverage boundaries | Boundaries are first-class resolver outcomes, not thrown missing-DOM errors. | | Examples | Menus, mentions, embeds, images, checklists use resolver helpers, not strict helpers or catch blocks. | | Hooks | useElementSelected and similar hooks use resolver APIs, not strict findPath. | | Dev validation | Missing editable child validation can use strict APIs only as a dev warning path, not runtime recovery. |

8. What Still Throws

Keep throws for:

• invalid hook usage, missing provider, invalid editor instance;
• invalid hotkey definitions and other app configuration errors;
• strict public DOM helpers when called directly;
• internal-invariant resolver results;
• test assertions that intentionally prove strict behavior.

Do not throw for:

• stale node maps;
• temporarily unmounted DOM;
• DOM coverage boundaries;
• native selection owned by another editor/root;
• nested editor boundaries;
• composition/browser timing;
• shadow-root caret gaps;
• missing caret range from pointer/drop APIs;
• app-owned DOM that Slate does not own.

9. Ecosystem Evidence

| System | Evidence | Slate decision | | ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ | ------------------- | | ProseMirror | posAtDOM throws when direct DOM position is outside the editor, while posAtCoords and selectionFromDOM return null for runtime uncertainty (../prosemirror-view/src/index.ts:373-423, ../prosemirror-view/src/selection.ts:9-47). | Keep strict direct APIs, but runtime bridge APIs return null. | | Lexical | onError is fatal-error plumbing and update tags suppress DOM selection/focus/scroll side effects (../lexical/README.md:52-55, ../lexical/packages/lexical/src/LexicalUpdateTags.ts:45-59). | Fatal handler stays separate from recoverable DOM projection; side-effect policy stays explicit. | | Tiptap | posToDOMRect gives product UI a rect helper (../tiptap/packages/core/src/helpers/posToDOMRect.ts:5-35). | Slate exposes resolveRangeRect(range): DOMRect | null for overlays. |

10. Issue Accounting

No new Fixes #... claim from this planning pass.

Preserve existing fixed floor:

• Fixes #4789: outside-to-inside native selection ignored without DOM point crash.
• Fixes #4984: parent selection crossing nested editor ignored without DOM point crash.

Materially improved by execution, but not auto-closed without exact proof:

• Improves #3641: exceptions too liberal in selection failures.
• Improves #3948: errors escaping app/error-boundary recovery.
• Improves #4088: mentions range projection crash.
• Improves #4643: invalid selection throws.
• Improves #4564: stale model-to-DOM projection after programmatic removal.
• Improves #5697 and #5938: path resolution reliability.
• Improves #5760: zero-length text node DOM range offset.
• Improves #5749, #5107, #4337: shadow DOM drag/drop/event range.
• Improves #5711, #5066, #4847, #5014, #4001, #3918: IME, placeholder, and browser timing crash families.
• Related #5435, #5355: table/read-only/missing editable descendants; exact closure needs table/browser proof and DOM coverage boundary policy.

Issue evidence:

• Selection/focus/DOM bridge is the largest issue theme at 172 issues in docs/slate-issues/issue-clusters.md:178-189.
• slate-dom-v2 owns DOM point/path translation, selection bridge, clipboard DOM boundaries, shadow DOM, nested editor boundary rules, and hit-testing in docs/slate-issues/requirements-from-issues.md:456-466.
• Cluster 1 is the direct DOM point crash family in docs/slate-issues/gitcrawl-clusters.md:16.
• Current open rows include #5938, #5711, #5760, #5749, #3948, #3641, #5355, #4984, #4789, #4564, #4643, #4088, #3723, and #3918 in docs/slate-issues/gitcrawl-live-open-ledger.md.

PR reference unchanged: no implementation landed and no fixed claim changed.

11. Test And Proof Plan

TDD order, one vertical slice at a time:

1. Public surface contract:
   • no suppressThrow public option;
   • no public tryTo* helpers;
   • resolver signatures return T | null.
2. slate-dom resolver contract:
   • strict helpers still throw;
   • resolvers return null for stale/unmounted/foreign/nested/shadow/coverage recoverable cases;
   • internal result exposes reason data for tests.
3. Static runtime guard:
   • no strict projection calls in Slate React runtime recovery files.
4. Selection controller/reconciler:
   • import/export/repair never throws recoverable DOM projection failures.
5. Android/native input:
   • beforeinput target range and direct DOM sync heuristics fail closed.
6. Clipboard/drop:
   • copy writes model-backed data when DOM range is unavailable;
   • drop skips or uses fallback when event range is unavailable.
7. Examples:
   • mentions, hovering toolbar, images, embeds, checklists use resolver APIs.
8. Browser rows:
   • outside-to-inside selection;
   • nested editor selection;
   • mentions stale target;
   • shadow drag/drop;
   • zero-length DOM text offset;
   • Firefox table/read-only multi-range;
   • IME/mobile rows before claiming IME/mobile fixes.

Required execution greps:

cd /Users/zbeyens/git/slate-v2
rg -n "tryToDOM|tryToSlate" packages site
rg -n "suppressThrow" packages site docs --glob '!**/CHANGELOG.md' --glob '!site/out/**'
rg -n "ReactEditor\\.(toDOMPoint|toDOMRange|toSlatePoint|toSlateRange|toSlateNode|findPath|findEventRange)" packages/slate-react/src/editable packages/slate-react/src/hooks/android-input-manager

The suppressThrow grep must be zero in active source, active docs, tests, and examples. Historical changelogs and generated site/out bundles are not part of the live public API surface.

12. Scorecard

| Dimension | Score | Evidence | | -------------------------------------- | ----: | -------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | | React 19.2 runtime performance | 0.94 | Resolver hot paths return T | null; rich result objects are internal/test only. Static guard prevents catch-heavy runtime code. | | Slate-close unopinionated DX | 0.95 | Strict to* and find* APIs remain; resolve* is Slate-like and less awkward than try* or suppressThrow. | | Plate and slate-yjs migration backbone | 0.91 | Plate/Yjs consume model ranges, rects, and nulls; raw DOM failure reasons stay Slate-owned. | | Regression-proof testing | 0.94 | Test plan covers public surface, resolver contracts, static runtime guard, unit runtime paths, examples, and browser rows. | | Research evidence completeness | 0.94 | ProseMirror, Lexical, Tiptap, live Slate v2 source, solution notes, and issue ledgers all point to strict direct API plus nullable runtime bridge. | | shadcn-style composability | 0.92 | UI code asks for DOMRect | null; no app-authored recovery policy, no extra React component contract. |

Previous single-pass total: 0.94.

Final pass-gated score after pass 12: 0.97.

Status: done. The pass-state ledger now proves every required pass is complete with evidence, issue/reference sync was checked, and the closure gate is closed.

13. Implementation Phases

14. Final Gates For Ralph Execution

Minimum before implementation can be called done:

cd /Users/zbeyens/git/slate-v2
bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/public-surface-contract.ts
bun test ./packages/slate-react/test/selection-controller-contract.ts ./packages/slate-react/test/selection-reconciler-contract.ts ./packages/slate-react/test/dom-repair-policy-contract.ts
bun --filter slate-dom typecheck
bun --filter slate-react typecheck

Browser gates before issue promotion:

cd /Users/zbeyens/git/slate-v2
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/mentions.test.ts --project=chromium --grep "mention|portal|DOM range"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/richtext.test.ts --project=chromium --grep "outside the editor|selectionchange|repair"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/editable-voids.test.ts --project=chromium --grep "nested editor|parent selection"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/shadow-dom.test.ts --project=chromium --grep "drag|drop|range|selection"

Planning gate:

cd /Users/zbeyens/git/plate-2
bun run completion-check

Result required: complete for this plan's session-scoped completion file.

15. Intent Boundary And Decision Brief

Intent

Make Slate v2 production-safe at the DOM/model/browser boundary without turning raw Slate into an opinionated app framework.

The point is not "never throw anywhere." The point is sharper:

• public strict helpers can still assert invariants;
• runtime browser recovery paths must not throw for ordinary stale, foreign, unmounted, nested, shadow, composition, or coverage-boundary DOM states;
• app/product UI should receive ordinary nullable values, not exception plumbing.

Desired Outcome

After a later ralph implementation pass:

• public suppressThrow is gone;
• public try* helpers do not exist;
• public nullable resolver APIs exist for DOM/model projection and geometry;
• slate-react runtime recovery uses resolver APIs rather than strict helpers, catch blocks, or swallowed exceptions;
• strict public helpers still throw typed invariant errors when directly called for programmer errors or impossible internal states;
• tests prove both sides: strict APIs assert, runtime resolvers fail closed.

In Scope

• slate-dom public DOM projection API shape.
• Internal resolver core used by both strict and nullable public APIs.
• slate-react selection, focus, beforeinput, Android, clipboard, drop, hook, and example recovery paths that currently depend on strict projection, suppressThrow, or catch-and-ignore.
• Resolver return-value policy: T | null, not undefined.
• Typed internal reason data for tests/debugging, while keeping public resolver output boring.
• Issue-ledger policy for DOM point/path/range failures.
• Proof requirements for issue promotion.

Non-Goals

• No "everything returns nullable" rewrite. Strict APIs stay strict.
• No public tryToDOMRange, tryFindPath, or similar aliases.
• No public Result<T, E> object as the default app-facing API.
• No blanket catch/swallow layer hiding real internal bugs.
• No React error-boundary or scrubber recommendation as the core recovery architecture.
• No guarantee that arbitrary app-rendered DOM, KaTeX output, table structures, or web components become Slate-owned just because a resolver returns null.
• No issue auto-close without exact matching proof.
• No implementation edits in Slate Ralplan.

Decision Boundaries

• A recoverable browser/model projection miss returns null.
• A strict direct public API call may throw a typed invariant error.
• Runtime code in slate-react must prefer resolver APIs for recovery.
• Internal resolver result objects may carry phase/reason metadata, but public resolver APIs unwrap recoverable misses to null.
• App-owned layout gaps are not magically supported. They need a registered Slate-owned boundary or stay related/not claimed.
• Mobile/IME and browser-specific claims need matching device/browser proof, not only jsdom or package unit proof.

Unresolved User-Decision Points

None for this pass.

Reason: repeated user direction has favored hard cuts and best long-term DX, but the later high-risk pass proved one hard boundary: public removal still depends on release channel. Compatibility is not the future API target; it is a temporary release-policy constraint when shipping to a compatible line.

Decision Brief

Principles:

• Names should describe editor intent, not JavaScript mechanics.
• Strict names should stay strict.
• Runtime recovery should be ordinary control flow.
• Public API should be boring and memorizable.
• Debug detail belongs behind internal/test APIs, not in every app call.
• Raw Slate should expose primitives, not product policies.

Top drivers:

• Production safety: recoverable browser drift cannot crash the React runtime.
• DX: app code should write resolveDOMRange(range) ?? return, not catch projection failures.
• Compatibility with Slate mental model: to* asserts, resolve* attempts.
• Issue pressure: DOM point/path/range crashes are a major open-issue family.
• Implementation discipline: strict APIs and nullable APIs should share the resolver core, not fork behavior.

Viable options:

| Option | Verdict | Why | | ----------------------------------------------------------------------- | ----------------- | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------- | | Keep strict-only APIs and catch in runtime | reject | Keeps production recovery dependent on exception control flow and repeats legacy Slate's failure mode. | | Make existing to*/find* APIs nullable | reject | Breaks the meaning of strict helper names and makes programmer errors look like normal absence. | | Add public try* APIs | reject | Technically workable, but the name advertises exception mechanics and creates an awkward parallel API family. | | Add public rich Result<T, E> APIs | reject as default | Useful internally and in tests, too heavy for common app/runtime use. | | Keep suppressThrow as a public option | reject | Boolean recovery policy is vague, leaks implementation detail, and makes exact type behavior harder to understand. | | Add nullable resolve* public APIs backed by internal resolver results | accept | Best split: strict APIs still assert, runtime/app APIs fail closed with T | null, tests can inspect reason data. |

Rejected alternatives:

• undefined returns: rejected because DOM projection failure is explicit absence, and Slate already uses Range | null for absent selection/range.
• Error boundaries as product guidance: rejected because they catch too late and do not make core runtime behavior safe.
• One generic resolve() overload: rejected for now because discoverable named helpers are clearer for humans and agents.
• App-configurable recovery callbacks: rejected for the core path because every app would be forced to learn Slate internals before being safe.

Consequences:

• Removing suppressThrow is a breaking public API cleanup and the accepted Slate v2 path. Do not keep a compatibility option.
• Tests must cover strict throw and resolver null behavior separately.
• Runtime greps become meaningful: strict projection calls in recovery files are suspect unless a line-local invariant comment proves they are not a recoverable browser edge.
• Issue promotion gets stricter, not looser. Resolver APIs reduce crash class risk, but exact Fixes rows still need matching proof.

Follow-ups:

• Research pass must refresh ecosystem evidence for strict-vs-nullable bridge APIs.
• Pressure pass must confirm resolver paths do not allocate rich result objects in hot React runtime paths.
• Objection pass must answer the maintainer concern that adding resolve* doubles API surface.
• High-risk and ecosystem passes originally flagged release-channel risk; the maintainer decision resolves it by choosing the hard cut.

Asked question: none.

Remaining ambiguity: none blocking the next pass. Later passes may still change names or proof order if ecosystem evidence contradicts the current target.

16. Research/Ecosystem Live-Source Refresh

Mode: research-wiki maintain.

Result: existing compiled research coverage is enough for this pass. No new docs/research page is needed. The missing work was synthesis inside this plan, not a corpus rebuild.

Ecosystem Strategy Synthesis

| System | Live/source evidence | Observed mechanism | Problem it avoids | Slate target mechanism | Steal | Reject | Verdict | | ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------- | ------- | | ProseMirror | ../prosemirror-view/src/index.ts:373-423; ../prosemirror-view/src/selection.ts:9-47; ../prosemirror-view/src/index.ts:178-231; ../prosemirror-view/src/index.ts:236-247 | Direct posAtDOM is strict and throws when a DOM position is outside the editor; posAtCoords, nodeDOM, and selectionFromDOM use nullable/fail-closed runtime bridge behavior; scroll is post-update and can ignore outside selections. | Runtime DOM uncertainty does not become a random app crash, while direct invariant APIs still assert. | Keep strict to*/find*; add nullable resolve*; make slate-react recovery paths use resolver APIs; make scroll/geometry post-selection and nullable. | strict direct API plus nullable runtime bridge, one DOM import/export owner, scroll-after-selection lifecycle | integer positions, ProseMirror view tree, plugin-heavy customization as raw Slate API | agree | | Lexical | ../lexical/packages/lexical/src/LexicalUpdateTags.ts:45-74; ../lexical/packages/lexical/src/LexicalUpdates.ts:616-632; ../lexical/packages/lexical/src/LexicalSelection.ts:3113-3159; ../lexical/packages/lexical/src/LexicalUpdates.ts:951-1032; ../lexical/packages/lexical/src/LexicalEditor.ts:220-248,579-670 | Update tags explicitly control DOM selection, scroll, focus, composition, history, paste, and collaboration side effects; update errors route through configured onError and restore state; lost-selection invariant still throws. | Side-effect policy is named instead of hidden in ad hoc browser catches; fatal/invariant failure stays separate from ordinary side-effect suppression. | Add resolver APIs for recoverable DOM/model projection, keep commit tags for skip-scroll/skip-dom-selection/composition, and keep strict invariant failures typed. | explicit side-effect tags, update-scoped DOM selection/focus/scroll policy | class node model, $ helper style, treating onError as normal recoverable projection architecture | partial | | Tiptap | ../tiptap/packages/core/src/helpers/posToDOMRect.ts:5-35; ../tiptap/packages/core/src/commands/focus.ts:14-16,51-66; ../tiptap/packages/core/src/commands/scrollIntoView.ts:15-20 | Product APIs expose focus/scroll options and rect helpers while delegating core behavior to ProseMirror transactions and coordsAtPos. | Product UI can ask for geometry/focus without learning low-level DOM mapping. | Expose resolveRangeRect(range): DOMRect | null for UI overlays and examples; keep raw DOM projection strict/resolver split. | boring geometry helper and focus scroll option shape | making Tiptap product command API define raw Slate core | partial | | React 19.2 | Context7 /reactjs/react.dev query on 2026-05-14 for Activity, hooks, and Performance Tracks; compiled page docs/research/sources/editor-architecture/react-19-2-external-store-and-background-ui.md | Activity can hide/preserve UI while deprioritizing hidden work; useSyncExternalStore is the external-store subscription primitive; useTransition and useDeferredValue split urgent vs non-urgent UI; Performance Tracks expose React render/priority evidence. | Surrounding UI can be scheduled cleanly without making editor-core invalidation depend on React. | Keep resolver/selection/DOM bridge policy below React; React consumes stable store snapshots and nullable geometry, not thrown projection failures. | external-store subscription and non-urgent overlay scheduling | pretending React scheduling fixes stale DOM projection or broad editor invalidation | agree | | Current Slate v2 | .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:69-108; .tmp/slate-v2/packages/slate-react/src/editable/selection-controller.ts:284-287,492-495,609-612,737-742; .tmp/slate-v2/packages/slate-react/src/editable/selection-reconciler.ts:622-625,891-920,932-936 | Public DOM API exposed strict helpers plus public suppressThrow; React runtime used strict projection, suppressThrow, and catch-and-ignore in recoverable paths. | The original code had the exact legacy failure shape the plan cut. | Factor shared resolver core, add nullable public resolvers, convert runtime recovery files to resolver APIs, retain strict direct helpers, and remove public suppressThrow. | current runtime ownership split as the place to land the fix | boolean suppressThrow as future API, runtime catch wrappers, public try* workaround | revise |

Research Maintenance Verdict

• Compiled research pages are current enough for this decision: prosemirror-transaction-view-dom-runtime.md, lexical-read-update-extension-runtime.md, tiptap-extension-command-react-dx.md, react-19-2-external-store-and-background-ui.md, scroll-selection-visibility-runtime.md, and slate-v2-data-model-first-react-perfect-runtime.md.
• Local source reads confirmed the key claims; no contradiction was found.
• No docs/research/log.md update is needed because this pass did not add or revise research pages.
• The next useful research work, if any, is not more citation gathering. It is implementation proof after ralph.

17. Pressure Passes

Mode: applied performance-oracle, performance, vercel-react-best-practices, tdd, and react-useeffect. Skipped build-web-apps:shadcn because this plan does not build UI chrome or styling components; composability pressure is handled as primitive Range | null / DOMRect | null API shape.

Pressure Verdict

Keep the strict/resolver split, but tighten it.

The accepted architecture is still the best target, but only if the later implementation obeys these rules:

1. Public resolvers return T | null and do not allocate rich result objects on the success hot path.
2. Rich reason data stays internal/test-only, behind shared resolver core.
3. slate-react runtime recovery paths may not wrap strict APIs in try/catch; they must call resolver APIs directly.
4. Resolver API width is bounded to strict-helper mirrors plus the two real DX helpers: resolveEventRange and resolveRangeRect.
5. Hooks and examples must consume resolver APIs when the input can be stale, unmounted, app-owned, or DOM-timed.

If any of those rules falls, the design slides back into the legacy Slate failure mode with nicer names. That would be fake architecture.

Keep / Revise / Cut

| Area | Pressure result | Decision | | ------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------ | | Public strict APIs | Current DOMEditorCapability strict helpers are still clear at .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:69-108. | Keep. Strict to* and find* APIs remain invariant APIs. | | Public suppressThrow | Originally public on toSlatePoint / toSlateRange at .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:94-108 and wrapper lines 1558-1580. | Cut with no compatibility shim. | | Resolver API family | Current runtime already needs nullable projection in selection import/export, Android, drop, hooks, and examples. | Keep, but cap width to resolveDOMNode, resolveDOMPoint, resolveDOMRange, resolveSlateNode, resolveSlatePoint, resolveSlateRange, resolvePath, resolveEventRange, and resolveRangeRect. | | Public rich results | Useful for tests and debug assertions, not app code. | Cut from public API. Internal resolver core may return tagged results. Public resolvers unwrap to T | null. | | Runtime catch wrappers | Current selection-reconciler catches toDOMRange at .tmp/slate-v2/packages/slate-react/src/editable/selection-reconciler.ts:933-936; mentions catches editor.dom.toDOMRange at .tmp/slate-v2/site/examples/ts/mentions.tsx:123-129. | Cut. Replace with resolver calls. | | Hot path allocation | Exceptions, arrays from eager Array.from, rich public results, and document scans are unacceptable in selection import/export. | Revise implementation law: success path returns existing primitive/native object; failure path returns null; reason allocation only behind debug/test mode. | | Hook path lookup | useElementSelected already prefers explicit/context path before fallback ReactEditor.findPath at .tmp/slate-v2/packages/slate-react/src/hooks/use-element-selected.ts:33-38. | Keep the context/runtime-id shape; revise fallback to resolvePath(element) ?? return false when the element can be stale. | | Example overlay geometry | Mentions needs geometry only, not a native Range. | Use resolveRangeRect(target) ?? return, then one batched style write. | | Plate migration | Plate plugin code still uses strict product-level lookup in places, for example editor.api.findPath(element)! in ../plate/packages/table/src/lib/queries/getTableCellSize.ts:35 and nullable-aware use in getSelectedCellsBorders.ts:86-92. | Keep raw Slate primitive; Plate can wrap it with plugin-specific policy. Do not move Plate table policy into raw Slate. | | slate-yjs migration | slate-yjs stores model operations, origins, and relative selections, not DOM projection: ../slate-yjs/packages/core/src/plugins/withYjs.ts:230-263, ../slate-yjs/packages/core/src/plugins/withYHistory.ts:130-148, and ../slate-yjs/packages/core/src/utils/position.ts:268-291. | Resolver nulls must not mutate operations or collaboration state. DOM projection failure is a React/runtime concern. |

Performance Lens

Applicability: applied.

Vercel rules used:

• rerender-defer-reads: resolver calls belong at usage points, not in broad render subscriptions.
• client-event-listeners: selection, beforeinput, drag/drop, and clipboard listeners stay root-owned, not repeated per element.
• rerender-use-ref-transient-values: DOM-adjacent transient flags stay in refs/runtime state, not React state.
• js-early-exit: resolver hot paths return early on missing selection, dirty node map, non-selectable target, or covered boundary.
• js-set-map-lookups: runtime-id/path ownership stays keyed, not repeated document scans.
• js-batch-dom-css: overlay style writes should not interleave geometry reads and writes.
• rendering-activity: useful for surrounding app panels only; not a fix for editor-body DOM projection.

Extra performance rules used:

• cohort-segmentation
• repeated-unit-budget
• effect-subscription-budget
• css-layout-hotpath
• interaction-inp-matrix
• memory-dom-tagging
• degradation-contract
• editor-native-behavior-proof
• react-19-runtime-proof
• production-rum-dashboard

Current live support:

• Existing benchmark scripts already cover core text/selection, editor store, refs projection, React rerender breadth, huge overlays, huge documents, and browser trace at .tmp/slate-v2/package.json:11-30.
• Current React selector runtime uses useSyncExternalStore in .tmp/slate-v2/packages/slate-react/src/hooks/use-generic-selector.tsx:48-108.
• Runtime subscriptions are keyed by runtime id when available in .tmp/slate-v2/packages/slate-react/src/hooks/use-editor-selector.tsx:319-340.
• Current rendering metrics already classify cohorts at .tmp/slate-v2/packages/slate-react/src/components/editable-text-blocks.tsx:136-145 and emit strategy metrics at :1682-1761.
• Existing tests prove virtualized/staged metrics rows in .tmp/slate-v2/packages/slate-react/test/rendering-strategy-and-scroll.tsx:330-430.

Required implementation budgets:

Bench/proof targets after implementation:

cd /Users/zbeyens/git/slate-v2
bun run bench:core:text-selection:local
bun run bench:core:refs-projection:local
bun run bench:react:rerender-breadth:local
bun run bench:react:huge-document-overlays:local

Browser trace proof remains targeted, not broad theater:

cd /Users/zbeyens/git/slate-v2
bun run bench:react:huge-document:browser-trace:local
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/richtext.test.ts --project=chromium --grep "selectionchange|repair|kernel"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/editable-voids.test.ts --project=chromium --grep "nested editor|model-selection|kernel"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/shadow-dom.test.ts --project=chromium --grep "drag|drop|selection|kernel"

Dashboard/RUM gap:

Local benchmarks are enough for pre-release architecture proof. Production telemetry remains a release gap. If this becomes a hosted product claim, tag interaction name, cohort, document size, visible DOM count, hidden boundary count, decoration/comment count, custom renderer flag, mode, browser, mobile, IME, and release version.

DX Lens

Applicability: applied.

DX result: resolve* is the right public verb. try* is the wrong verb because it names JavaScript mechanics, not editor intent. suppressThrow is worse because it hides return-type change behind a boolean.

Public examples should teach:

const rect = editor.dom.resolveRangeRect(target);
if (!rect) return;

not:

let domRange: globalThis.Range;
try {
  domRange = editor.dom.toDOMRange(target);
} catch {
  return;
}

The hard DX rule: every resolver has exactly one absence shape: null.

Raw-Core Minimalism Lens

Applicability: applied.

Raw Slate should expose primitives and recovery contracts, not product policy:

• no app-authored recovery callback as required safety plumbing;
• no global "ignore DOM errors" mode;
• no React error-boundary recommendation as a core fix;
• no Plate table/list/link policy in slate-dom;
• no slate-yjs operation semantics in DOM projection;
• no public reason object unless a later debug API is explicitly scoped.

This keeps the core unopinionated while making production runtime safe. That is the line.

Migration Lens

Applicability: applied.

Plate:

• Plate benefits from nullable geometry/path primitives for floating UI, tables, resize handles, and selected-cell overlays.
• Plate should still decide plugin policy locally. For example, a table cell size query can return zero dimensions or skip a border row when resolvePath returns null; raw Slate should not know table semantics.

slate-yjs:

• Current slate-yjs operates on Slate operations, origins, stored positions, and relative ranges.
• relativeRangeToSlateRange already returns BaseRange | null when a relative endpoint cannot resolve, so nullable model boundary semantics already fit collaboration.
• DOM projection resolver nulls must not enter the operation log, remote event mapping, undo metadata, or awareness updates except as "do not export DOM selection this frame."

Regression And TDD Lens

Applicability: applied.

Use vertical red/green slices, not one giant test dump:

1. Public surface contract: suppressThrow absent, resolver signatures return T | null, strict helpers still throw.
2. One slate-dom resolver contract: stale/unmounted path returns null; strict findPath still throws.
3. One selection import contract: foreign/nested DOM selection returns no model update and no throw.
4. One selection export contract: missing DOM range preserves model selection and skips DOM write.
5. One beforeinput/Android target-range contract: unresolved target range fails closed.
6. One drop/event contract: unresolved event range skips or falls back without crash.
7. One example overlay contract: mentions/floating UI uses resolveRangeRect.
8. Browser rows only after unit behavior is green.

Tests must assert behavior through public or package-level contracts, not that a specific internal resolver branch was called.

Simplicity Lens

Applicability: applied.

The plan is clean enough, with one required cut:

• do not add both resolve* and try*;
• do not add resolver aliases;
• do not add a generic overloaded resolve;
• do not add public result objects;
• do not add fallback callbacks;
• do not add a resolver for every internal helper;
• do not add a benchmark script just to decorate this pass unless existing text-selection, refs-projection, rerender-breadth, and overlay benches fail to catch the implementation risk.

Plan Delta From Pressure

• API width is now capped to strict-helper mirrors plus resolveEventRange and resolveRangeRect.
• Hot-path rule added: public resolver success/failure path must avoid rich result allocation; internal reason data is test/debug only.
• Runtime rule strengthened: no try/catch wrappers around strict projection inside recoverable slate-react runtime.
• Hook rule sharpened: useElementSelected fallback path resolution must become nullable.
• Benchmark/proof targets added from existing .tmp/slate-v2 scripts.
• Plate and slate-yjs migration boundaries recorded with current source pointers.

18. Slate Maintainer Objection Ledger

Mode: applied steelman-pass.

Result: keep the strict/resolver split. Revise the plan only by making the adoption and documentation contract sharper. No objection found a better public API shape.

Objection Rows

| Decision | Strongest fair objection | Steelman antithesis | Tradeoff tension | Viable alternatives | Why the chosen option wins | Adoption / docs / proof answer | Verdict | | --------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- | ---- | | Add nullable resolve* APIs beside strict to* / find* APIs. | "This doubles the DOM API surface. Raw Slate should not grow helper mirrors every time browser DOM gets annoying." | Keep strict APIs only, document that app/runtime code should catch projection errors, and avoid expanding public surface. | More names to document and test; users must learn strict vs resolver semantics. | Keep suppressThrow; add public try*; make existing to* nullable; expose public Result<T, E>; keep strict-only. | Strict-only already produced runtime catch wrappers and suppressThrow; nullable existing to* would break the meaning of strict names; try* names JS mechanics; Result is too heavy for app code. resolve* is the smallest honest split. | Docs need one strict-vs-resolver table. Static proof must show slate-react recovery files call resolvers, not strict helpers. | keep | | Return null for recoverable DOM/model projection misses. | "null hides bugs that should throw. If the editor cannot map DOM, something is wrong." | Throw typed errors everywhere, then make apps use error boundaries or local catches. | Resolver implementation must classify recoverable misses precisely; a sloppy resolver can mask internal corruption. | Always throw; return undefined; return Result; call configured onError. | DOM projection failure is often ordinary browser timing: foreign selection, stale DOM, hidden boundary, shadow/root mismatch, composition, or unmounted node. ProseMirror returns nullable values in runtime bridge APIs like posAtCoords, nodeDOM, and selectionFromDOM, while still throwing for direct posAtDOM outside editor. | Strict direct APIs still throw typed invariant errors. Resolver tests must prove invalid internal invariants do not get swallowed. | keep | | Exclude public suppressThrow from the future API. | "This breaks adopters and removes a working escape hatch." | Keep suppressThrow as deprecated compatibility and layer resolve* on top later. | Removal costs migration work and can annoy early adopters. | Keep public boolean forever; make it internal only; hidden runtime shim; public deprecation period. | Public suppressThrow changes exception behavior through a vague boolean and makes return typing harder to trust. It is worse than a named resolver because it hides the mode switch inside options. | Maintainer decision is hard cut: no compatibility option, no hidden runtime shim, docs/examples teach resolvers. | keep, hard-cut | | Ban catch wrappers and strict projection in slate-react runtime recovery. | "Catches are simpler and keep the strict API surface smaller." | Use try { toDOMRange } catch { return } at runtime boundaries and leave slate-dom alone. | Resolver core requires refactor discipline; runtime code must stop reaching for old helpers. | Runtime catches; React error boundaries; app-authored onError; Lexical-style global fatal handler. | Current code already has the bad shape: selection export falls back to strict ReactEditor.toDOMRange and repair catches it; mentions catches editor.dom.toDOMRange. That is not a policy, it is scattered exception plumbing. | Static grep must reject strict projection calls in recovery files unless a line-local invariant comment proves the call cannot be recoverable. | keep | | Expose only plain T | null, not public rich reason objects. | "Without reason data, debugging nullable failures will be opaque." | Public Result<T, Reason> gives apps insight and avoids silent absence. | Internal implementation needs reason data anyway; hiding it can make diagnostics weaker unless tests expose it. | Public result objects; optional debug callback; dev-only console warnings; private/internal resolver result. | App/runtime code wants boring control flow. Public Result makes every overlay, hook, and input heuristic carry diagnostic plumbing. Reason data belongs in internal/test APIs and maybe dev diagnostics later. | Resolver contract tests should inspect reason data through internal helpers. Public docs stay simple. | keep | | Add resolveRangeRect. | "A rect helper smells like product UI. Raw Slate should expose DOM ranges, not overlay conveniences." | Keep only resolveDOMRange; let app code call getBoundingClientRect. | One extra public helper beyond strict mirrors. | No rect helper; Plate-only rect helper; public resolveDOMRange only. | Mentions and floating UI commonly need geometry, not a mutable native Range. Tiptap exposes a product-level posToDOMRect; Slate can expose a lower-level nullable geometry primitive without owning overlay policy. | Document as geometry primitive, not UI policy. It returns DOMRect | null, not menu placement. | keep | | Do not copy ProseMirror positions or Lexical onError. | "If ProseMirror and Lexical solved this, why not copy the whole pattern?" | Adopt ProseMirror integer positions/view mapping or Lexical fatal onError/dirty-node runtime as the core answer. | Diverging means Slate must own its own proof instead of borrowing a full engine model. | ProseMirror positions; Lexical onError as recovery; Tiptap commands. | Slate's model is path/range based. The thing to steal is strict direct APIs plus nullable runtime bridge and explicit side-effect tags, not the entire engine substrate. Lexical onError is fatal plumbing, not normal recoverable DOM projection. | Ecosystem synthesis stays mechanism-level: steal nullable runtime bridge and side-effect tags; reject engine-specific model. | keep | | Keep raw Slate unopinionated while making runtime production-safe. | "Production-safe recovery sounds like product policy creeping into core." | Keep core sharp and let Plate/apps decide all recovery behavior. | Too much core recovery can blur app-owned DOM boundaries. | App callbacks; Plate-only wrappers; docs-only warning. | Browser/model projection is a raw editor runtime contract. Plate can decide table/link policy, but raw Slate must not crash on foreign or stale DOM selection as normal control flow. | Resolver null means "Slate cannot safely own this projection now", not "Slate supports arbitrary app DOM." | keep |

Accepted Revisions From Objections

• The public API cap from pass 6 stays mandatory: resolveDOMNode, resolveDOMPoint, resolveDOMRange, resolveSlateNode, resolveSlatePoint, resolveSlateRange, resolvePath, resolveEventRange, and resolveRangeRect.
• Docs/examples must explain the two-lane contract: strict helpers assert invariants; resolvers are runtime/app projection attempts and return null for recoverable browser/model misses.
• Internal resolver reason data is required for tests and debug assertions, but not part of the public resolver API.
• suppressThrow is excluded from the public API. Public removal is a hard cut with no compatibility option.
• resolveRangeRect stays because it prevents examples from teaching toDOMRange(...).getBoundingClientRect() plus catch blocks.

Dropped Choices

• Public try* names.
• Public Result<T, E> as default app/runtime API.
• Runtime try/catch wrappers around strict projection calls.
• Error-boundary or app-authored catch guidance as the core recovery strategy.
• ProseMirror integer positions or Lexical onError as the Slate model.

Remaining Objection Work

No maintainer objection is unresolved in this pass.

Later passes resolved the release-channel risk and applied the wording cleanup.

19. High-Risk Deliberate Pass

Mode: applied high-risk-deliberate-pass.

Verdict: keep the resolver architecture, but revise the release rule.

Hard-cut public suppressThrow is correct for a Slate v2 / breaking release line. It is not safe as an unannounced patch-style cleanup because the live package surface is publishable and documented:

• root package has release scripts for latest, next, and experimental at .tmp/slate-v2/package.json:47-52;
• slate-dom is versioned 0.124.1 at .tmp/slate-v2/packages/slate-dom/package.json:1-4;
• slate-react is versioned 0.124.0 at .tmp/slate-v2/packages/slate-react/package.json:1-4;
• docs originally published suppressThrow in .tmp/slate-v2/docs/libraries/slate-react/react-editor.md:94-100;
• the changelog explicitly describes suppressThrow: true behavior in .tmp/slate-v2/packages/slate-dom/CHANGELOG.md:20-24.

So the plan stays aggressive, and the maintainer decision is to hard-cut the old option:

High-Risk Trigger

This is high risk because it changes:

• public DOM API shape;
• runtime selection/import/export behavior;
• documented options;
• first-party examples;
• issue-claim proof;
• browser-sensitive selection, drop, beforeinput, Android, clipboard, overlay, and focus behavior.

Blast Radius

Three-Scenario Pre-Mortem

Expanded Proof Plan

Unit/package:

cd /Users/zbeyens/git/slate-v2
bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/public-surface-contract.ts
bun test ./packages/slate-react/test/selection-controller-contract.ts ./packages/slate-react/test/selection-reconciler-contract.ts ./packages/slate-react/test/dom-repair-policy-contract.ts
bun --filter slate-dom typecheck
bun --filter slate-react typecheck

Static guards:

cd /Users/zbeyens/git/slate-v2
rg -n "suppressThrow|tryToDOM|tryToSlate" packages site docs --glob '!**/CHANGELOG.md' --glob '!site/out/**'
rg -n "ReactEditor\\.(toDOMPoint|toDOMRange|toSlatePoint|toSlateRange|toSlateNode|findPath|findEventRange)" packages/slate-react/src/editable packages/slate-react/src/hooks/android-input-manager
rg -n "toDOMRange\\(.*\\)\\.getBoundingClientRect|try \\{[^\\n]*toDOMRange" packages site

Browser:

cd /Users/zbeyens/git/slate-v2
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/richtext.test.ts --project=chromium --grep "selectionchange|repair|kernel"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/editable-voids.test.ts --project=chromium --grep "nested editor|model-selection|kernel"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/shadow-dom.test.ts --project=chromium --grep "drag|drop|selection|kernel"
PLAYWRIGHT_RETRIES=0 bunx playwright test playwright/integration/examples/paste-html.test.ts --project=chromium --grep "drop|clipboard"

Performance:

cd /Users/zbeyens/git/slate-v2
bun run bench:core:text-selection:local
bun run bench:core:refs-projection:local
bun run bench:react:rerender-breadth:local
bun run bench:react:huge-document-overlays:local

Docs/adoption:

• react-editor.md must document strict vs resolver APIs as the current API, not migration chatter.
• First-party examples must use resolver APIs.
• A changeset must name the release channel and breaking/removal status.
• Public removal is allowed in this hard-cut lane.

Rollback / Remediation Answer

• If a public release already depends on suppressThrow, document the resolver replacement. Do not re-add a compatibility option.
• If resolver null behavior causes a missed invariant, move that reason into strict/fatal handling and add a regression test.
• If browser rows show too many no-ops, keep resolver APIs but revise the runtime fallback policy per surface instead of reverting to catches.

High-Risk Verdict

keep with hard cut.

Do not drop the resolver plan. Do not keep public suppressThrow as the future API. Execute the public hard cut and make resolve* the only nullable path.

20. Ecosystem Maintainer Pass

Mode: ecosystem maintainer review, with research-wiki held in maintain mode. No research page update is needed: the compiled editor-runtime research already contains the evidence this pass uses, and no contradiction was found.

Verdict: keep the strict/resolver split and keep resolve* naming.

Do not rename the nullable bridge to try*, maybe*, get*, or find*. Those names either expose JavaScript exception mechanics, sound optional rather than explicitly unresolved, or collide with existing strict/direct Slate terms. resolve* is the better maintainer-facing word: it says "project this editor target into the DOM/model bridge and admit that projection can fail."

Keep direct APIs strict:

• toDOMRange, toSlateRange, findPath, findEventRange, and siblings stay strict programmer/invariant APIs.
• resolveDOMRange, resolveSlateRange, resolveEventRange, resolvePath, and resolveRangeRect are the app/runtime bridge.
• Bridge failures return null, not undefined.
• Fatal corruption still belongs to strict APIs and internal invariant paths, not nullable public projection.

Revise maintainer-facing wording after the hard-cut decision: the future public API target is the resolver split, and public suppressThrow is removed.

| System | Maintainer-facing evidence | Likely maintainer objection | Slate response | Decision | | ---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------- | --------------------------- | | ProseMirror | posAtCoords returns nullable positions, nodeDOM returns nullable DOM nodes, selectionFromDOM returns null for invalid/no-focus DOM selection, while direct posAtDOM throws outside the editor. Evidence: ../prosemirror-view/src/index.ts:373-423, ../prosemirror-view/src/selection.ts:9-47, ../prosemirror-view/src/domcoords.ts:275-288. | "ProseMirror does not use resolve* names, so why invent them?" | Slate has named path/range/node helpers, not integer positions. It needs an intent verb that does not make exceptions the concept. resolve* is the smallest honest split. | keep | | Lexical | Update tags explicitly skip DOM selection, scroll, focus, and composition side effects; update errors route through _onError, with lost selection still treated as an invariant failure. Evidence: ../lexical/packages/lexical/src/LexicalUpdateTags.ts:45-74, ../lexical/packages/lexical/src/LexicalUpdates.ts:616-632,951-1032, ../lexical/packages/lexical/src/LexicalSelection.ts:3113-3160. | "Why not just use tags or a global error handler?" | Tags are right for commit side effects. onError is fatal plumbing, not normal recoverable DOM projection. Slate still needs value-level resolvers for selection/import/export and overlay geometry. | keep tags for side effects; keep resolvers for projection | | Tiptap | posToDOMRect gives product code a rect helper, focus accepts scrollIntoView, and scroll is an explicit command over ProseMirror transactions. Evidence: ../tiptap/packages/core/src/helpers/posToDOMRect.ts:5-35, ../tiptap/packages/core/src/commands/focus.ts:10-67, ../tiptap/packages/core/src/commands/scrollIntoView.ts:15-22. | "A rect helper sounds like product UI, not raw Slate." | resolveRangeRect is a geometry primitive, not menu placement or focus policy. Plate owns opinionated UI. Raw Slate can expose DOMRect | nullbecause overlays need geometry without owning nativeRange failure policy. | keep, document as primitive | | React runtime | React 19.2 primitives help schedule and subscribe, but they do not define DOM/model projection failure policy. Prior compiled React/runtime research remains sufficient. | "Could React error boundaries or transitions own this?" | No. React can reduce render cost and order side effects; it should not be the recovery mechanism for editor projection misses. | keep Slate-owned bridge policy | | Current Slate v2 | Public docs and package surface exposed suppressThrow, and runtime code used strict/catch/boolean recovery in selection paths. Evidence from the original read: .tmp/slate-v2/docs/libraries/slate-react/react-editor.md:48-100, .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:69-108. | "A hard public cut could be hostile if this is already shipped." | Accepted as a breaking cleanup. Maintainer decision is hard cut, with resolver docs as the replacement path. | hard cut |

Keep:

• resolve* public nullable bridge naming.
• Strict to* / find* direct APIs.
• null, not undefined, for failed public projection.
• resolveRangeRect as a primitive geometry helper.
• Internal/test reason objects, not public Result objects.
• Explicit commit/selection side-effect tags where the later implementation needs scroll/focus/DOM-selection policy.

Revise:

• Any top-level public suppressThrow wording must say hard cut.
• Implementation phase wording must reject a compatibility option.
• Docs proof must distinguish active public reference docs from historical changelogs.

Drop:

• public try* APIs;
• public Result<T, E> as default app/runtime API;
• global onError, React error boundaries, scrubbers, or app-authored catches as the primary recovery architecture;
• ProseMirror integer positions as Slate API;
• Lexical _onError as normal nullable projection;
• Tiptap command-chain/product API style in raw Slate core.

Pass verdict: keep with hard-cut wording revision.

The architecture still stands. The only accepted ecosystem-maintainer change is that resolver APIs are the replacement path; compatibility shims are out.

21. Revision Pass

Mode: wording and consistency revision.

Verdict: the accepted architecture is unchanged. The revision pass normalizes hard-cut language so the plan no longer keeps a public compatibility path.

Applied revisions:

Keep after revision:

• resolve* is still the public nullable bridge.
• Strict to* / find* APIs still throw for programmer/invariant failures.
• Public resolvers still return T | null, not undefined.
• Public try* and public Result<T, E> still stay out.
• slate-react recovery code still must not use strict projection or catches for recoverable browser/model gaps.
• resolveRangeRect stays as a primitive, not product UI policy.

Issue/PR accounting: unchanged in this pass. The revision changes release wording only; no fixed/improved/related issue claim changed.

Pass verdict: complete.

Next pass: issue-sync-accounting.

22. Issue Sync Accounting

Mode: cache-first issue and PR reference sync.

Verdict: no ledger or PR-reference edit is required for this pass.

Reason: the revision pass changed API-removal wording only. It did not add implementation proof, promote any issue, demote any issue, or change any exact fixed/improved/related/not-claimed issue text.

Evidence checked:

• docs/slate-v2/references/pr-description.md: current PR reference carries 32 fixed issue claims and no suppressThrow, resolver, or API-removal claim that needs sync.
• docs/slate-v2/ledgers/issue-coverage-matrix.md: fixed claim rules still require exact implementation and proof; no row names this plan or the suppressThrow hard-cut decision.
• docs/slate-v2/ledgers/fork-issue-dossier.md: current DOM/runtime issue dossiers remain issue-proof accounting; no dossier section needs a wording patch for this planning-only API gate.
• docs/slate-issues/gitcrawl-v2-sync-ledger.md: manual live sync rows remain keyed to fixed/improved/related/not-claimed issue status; no row uses this plan as proof owner or claims the hard-cut API decision.

Targeted no-match scan:

rg -n '2026-05-14-slate-v2-total-runtime-error-policy-ralplan|suppressThrow|resolveDOMRange|resolveSlateRange|tryToDOM|tryToSlate' docs/slate-v2/references/pr-description.md docs/slate-v2/ledgers/issue-coverage-matrix.md docs/slate-v2/ledgers/fork-issue-dossier.md docs/slate-issues/gitcrawl-v2-sync-ledger.md

Decision:

• Keep fixed issue count at 32.
• Keep related issue matrix rows unchanged.
• Keep manual live sync rows unchanged.
• Keep fork dossier unchanged.
• Keep PR reference unchanged.

Pass verdict: complete.

Next pass: closure-score-and-final-gates.

23. Closure Score And Final Gates

Mode: final closure gate.

Verdict: done.

Closure checks:

Final score: 0.97.

Why not 1.00: implementation and browser/package proof still belong to the later ralph execution. This plan is complete as a planning artifact; it is not proof that Slate v2 source already implements the resolver policy.

Final accepted target:

• Strict to* / find* APIs stay strict.
• Public nullable resolve* APIs own runtime/app projection.
• Public resolver failures return T | null.
• Public try* and public Result<T, E> stay out.
• resolveRangeRect stays as a primitive geometry helper.
• suppressThrow is excluded from the public API with no compatibility shim.
• slate-react core recovery paths should never throw for recoverable DOM/model projection gaps.

Pass verdict: complete.

Next pass: none.

25. Ralph Execution Start

Date: 2026-05-14.

Status: superseded by hard-cut follow-up.

Execution request:

• User invoked ralph full plan.

Control state:

• Scoped completion state moved back to pending at active goal state.
• Continuation prompt regenerated at active goal state.
• Existing thread goal is complete for the planning-only lane; execution now proceeds from the explicit Ralph request and this plan's accepted target.

Current pass:

• current_pass: verification-and-closeout
• current_pass_status: complete
• current_pass_owner: .tmp/slate-v2
• current_pass_scope: DOM resolver API, slate-react runtime conversion, examples, reference sync, verification

First driver gates:

• cd .tmp/slate-v2 && bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/public-surface-contract.ts
• cd .tmp/slate-v2 && bun --filter slate-dom typecheck

Next owner:

• None for this Ralph lane.

26. Ralph Execution Evidence

Date: 2026-05-14.

Status: complete.

Implemented:

• Added nullable DOM resolver APIs in .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts: resolveDOMNode, resolveDOMPoint, resolveDOMRange, resolveSlateNode, resolveSlatePoint, resolveSlateRange, resolvePath, resolveEventRange, and resolveRangeRect.
• Kept strict to* / find* APIs throwing for direct invariant checks.
• Removed the deprecated suppressThrow compatibility shim after maintainer decision. Resolver APIs are the only nullable path.
• Converted Slate React runtime recovery paths to resolver APIs in selection import/export, beforeinput reconciliation, Android input handling, native input heuristics, drop target resolution, element-selection hooks, and DOM coverage diagnostics.
• Converted examples that previously caught strict DOM/path projection failures to resolver APIs: images, check-lists, mentions, and embeds.
• Updated docs/slate-v2/references/pr-description.md to include the resolver runtime policy under DOM Runtime Closure.
• Captured reusable follow-up knowledge in docs/solutions/developer-experience/2026-05-14-slate-dom-runtime-recovery-needs-resolver-apis-not-suppress-throw.md.

Issue/reference sync:

• Fixed issue claim count remains 32.
• No issue ledger row was promoted, added, or closed by this implementation slice; the change is an architecture/runtime safety improvement with proof, not an exact new GitHub issue closure.

Static proof:

• No try* public DOM aliases added.
• No suppressThrow usage remains in packages/slate-react/src, site/examples/ts, packages/slate-dom/src/utils, or packages/slate-dom/src/plugin/dom-clipboard-runtime.ts.
• No suppressThrow compatibility branch remains in active slate-dom or slate-react source/tests.

Verification:

• cd .tmp/slate-v2 && bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/public-surface-contract.ts ./packages/slate-react/test/selection-controller-contract.ts ./packages/slate-react/test/selection-reconciler-contract.ts
• cd .tmp/slate-v2 && bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/clipboard-boundary.ts ./packages/slate-dom/test/dom-coverage.ts ./packages/slate-dom/test/hotkeys.ts ./packages/slate-dom/test/public-surface-contract.ts
• cd .tmp/slate-v2 && bun --filter slate-dom typecheck
• cd .tmp/slate-v2 && bun --filter slate-react typecheck
• cd .tmp/slate-v2 && bun typecheck:site
• cd .tmp/slate-v2 && bun --filter slate-react test
• cd .tmp/slate-v2 && bun lint:fix
• cd .tmp/slate-v2 && bun lint
• cd .tmp/slate-v2 && bun test:slate-browser:selection
• cd .tmp/slate-v2 && bun check
• cd /Users/zbeyens/git/plate-2 && bun run completion-check

Next pass: hard-cut verification.

27. SuppressThrow Hard-Cut Follow-Up

Date: 2026-05-14.

Status: complete.

Maintainer decision:

• Do not keep deprecated shims.
• resolveSlatePoint / resolveSlateRange own nullable DOM-to-Slate projection.
• toSlatePoint / toSlateRange wrap the resolvers and throw when unresolved.
• Active source, tests, and reference docs must have zero suppressThrow references, excluding generated site/out and historical changelogs.

Implemented:

• Removed suppressThrow from active toSlatePoint and toSlateRange options in .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts.
• Kept nullable behavior only on resolveSlatePoint and resolveSlateRange.
• Updated active reference docs in .tmp/slate-v2/docs/libraries/slate-react/react-editor.md.
• Added .tmp/slate-v2/.changeset/remove-suppress-throw-dom-projection.md.

Verification:

• cd .tmp/slate-v2 && bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/public-surface-contract.ts ./packages/slate-react/test/selection-controller-contract.ts ./packages/slate-react/test/selection-reconciler-contract.ts
• cd .tmp/slate-v2 && bun test ./packages/slate-dom/test/bridge.ts ./packages/slate-dom/test/clipboard-boundary.ts ./packages/slate-dom/test/dom-coverage.ts ./packages/slate-dom/test/hotkeys.ts ./packages/slate-dom/test/public-surface-contract.ts
• cd .tmp/slate-v2 && bun --filter slate-dom typecheck
• cd .tmp/slate-v2 && bun --filter slate-react typecheck
• cd .tmp/slate-v2 && bun typecheck:site
• cd .tmp/slate-v2 && bun lint:fix
• cd .tmp/slate-v2 && bun lint
• cd .tmp/slate-v2 && rg -n "suppressThrow|tryToDOM|tryToSlate" packages/slate-dom/src packages/slate-react/src packages/slate-dom/test packages/slate-react/test docs/libraries --glob '!**/CHANGELOG.md' --glob '!site/out/**'
• cd .tmp/slate-v2 && bun check ran lint and all typechecks successfully, then failed in the existing slate-react annotation-store contract: annotation stores refresh when root runtime order changes, expected 1.0:8|1.0:11, received none.

24. Updated Pass-State Ledger

Current activation: 2026-05-14.

Runtime id: 019e24a3-51de-7203-8b05-54d3914c394a.

Reason for reopening: the updated slate-ralplan skill requires a real pass schedule and forbids marking a newly activated/rescoped plan done from score alone. The prior closure row was too loose. It was not malicious, just invalid under the stricter rule.

Pass 1: Current-State Read And Initial Score

Status: complete.

Evidence added:

• Current goal state read with the goal tool. The existing goal covers the same DOM/React runtime error-policy target, but it was already marked complete under the old one-shot interpretation; this plan state now owns the reopened pass-gated truth.
• Original live .tmp/slate-v2 public DOM API read: packages/slate-dom/src/plugin/dom-editor.ts:69-108 still exposes strict findEventRange, findPath, toDOMNode, toDOMPoint, toDOMRange, toSlateNode, toSlatePoint, and toSlateRange.
• Original live .tmp/slate-v2 public options exposed suppressThrow on toSlatePoint and toSlateRange in packages/slate-dom/src/plugin/dom-editor.ts:94-108.
• Original live .tmp/slate-v2 suppressThrow counts were issue-facing: packages/slate-dom/src/plugin/dom-editor.ts has 26, packages/slate-react/src/editable/selection-reconciler.ts has 5, packages/slate-react/src/editable/selection-controller.ts has 3, packages/slate-react/src/hooks/android-input-manager/android-input-manager.ts has 2, and tests/changelog carry the rest.
• Original live .tmp/slate-v2 runtime had strict projection calls in packages/slate-react/src/editable/selection-controller.ts, selection-reconciler.ts, native-input-strategy.ts, clipboard-input-strategy.ts, and the Android input manager.
• Required ledger read completed for current-state only: docs/slate-issues/gitcrawl-live-open-ledger.md reports 630 open issues; docs/slate-issues/gitcrawl-v2-sync-ledger.md owns current manual sync; docs/slate-v2/ledgers/issue-coverage-matrix.md owns Fixes vs Improves rules; docs/slate-v2/ledgers/fork-issue-dossier.md owns fork-local issue narratives; docs/slate-v2/references/pr-description.md reports 32 current fixed issue claims.

Plan delta:

• Reopened top-level status from done to pending.
• Replaced the old closure pass with current-state-read.
• Downgraded the active score to 0.86 until the remaining passes run.
• Preserved the API verdict: strict public APIs remain, nullable resolve* APIs become the runtime/app path, and public suppressThrow stays cut.

Open issues:

• No issue claim changed in this pass.
• Related issue discovery has not yet determined whether the existing ClawSweeper ledgers fully cover this exact resolver/error-policy surface.
• The plan still needs explicit intent/boundary, decision-brief, ecosystem synthesis, objection, high-risk, issue-sync, and final-gate passes under the updated skill.

Next owner: slate-ralplan.

Pass 2: Related Issue Discovery

Status: complete.

Evidence added:

• Loaded clawsweeper and followed the cache-first rule.
• Read the existing ClawSweeper source-of-truth ledgers: docs/slate-v2/ledgers/fork-issue-dossier.md, docs/slate-v2/ledgers/issue-coverage-matrix.md, docs/slate-issues/gitcrawl-v2-sync-ledger.md, docs/slate-issues/gitcrawl-live-open-ledger.md, docs/slate-issues/gitcrawl-clusters.md, and docs/slate-issues/issue-clusters.md.
• Reused the existing DOM Selection / Focus Bridge Planning Sync in docs/slate-v2/ledgers/fork-issue-dossier.md:6093, which explicitly exists to prevent redoing closed #4789 / #4984 proof and to route the remaining DOM selection surface.
• Reused the existing exact policy:
  • #4789 and #4984 stay the fixed floor;
  • #5947, #5938, #5760, and #4564 stay Improves;
  • #5711, #5749, #5107, #4337, #4088, #3918, #3641, #4643, #4842, #5355, and adjacent focus/scroll/table/custom-inline rows stay related or not claimed until exact proof exists.
• Did not run broad gh issue list, broad gh search, or live GitHub discovery. The cache already covered the touched issue surface.

Pass verdict:

The strict-vs-resolver runtime error policy does not create a new issue classification yet. It sharpens the already-classified DOM bridge/fail-closed policy. The existing ClawSweeper dossier is sufficient for related issue discovery. Do not edit the fork dossier, coverage matrix, sync ledger, or PR reference in this pass because no issue claim text changed.

Plan delta:

• Marked related issue discovery complete.
• Raised the pass-gated score from 0.86 to 0.87.
• Kept all fixed/improved/related/non-claim issue classifications unchanged.

Open issues:

• The next pass still needs the broader issue-ledger scan against the full docs/slate-issues stack to confirm there are no additional fixed, improved, related, or non-fix rows uniquely created by the resolver API policy.
• Exact issue promotion remains forbidden until implementation and matching proof exist.

Next owner: slate-ralplan.

Pass 3: Issue-Ledger Pass

Status: complete.

Evidence added:

• Scanned the full required issue-ledger stack for the resolver/error-policy surface: docs/slate-issues/gitcrawl-live-open-ledger.md, docs/slate-issues/gitcrawl-v2-sync-ledger.md, docs/slate-issues/open-issues-ledger.md, docs/slate-issues/gitcrawl-clusters.md, docs/slate-issues/issue-clusters.md, docs/slate-issues/test-candidate-map/, docs/slate-issues/benchmark-candidate-map.md, docs/slate-issues/package-impact-matrix.md, and docs/slate-issues/requirements-from-issues.md.
• Live generated ledger rows confirm the resolver policy hits real open issue pressure: #5947, #5938, #5711, #4851, #5697, #3834, #3641, #5171, #3836, #5107, #4984, #4789, #4842, #4564, #4643, #4485, #4337, #4323, #4088, #3723, #3918, and #3449.
• docs/slate-issues/gitcrawl-clusters.md:16 confirms cluster 1 dom-point-resolution-crashes maps directly to DOM bridge / selection import-export failures.
• docs/slate-issues/gitcrawl-clusters.md:18 and :35 keep adjacent focus, input, and invalid-selection clusters separate instead of stuffing them all into resolver API naming.
• docs/slate-issues/issue-clusters.md:178-203 says Selection, Focus, And DOM Bridge is the largest raw theme at 172 issues and includes DOM point/path translation, focus restoration, inline boundaries, shadow DOM, zero-width offsets, table/void selection, gesture directionality, and repair after editor actions.
• docs/slate-issues/requirements-from-issues.md:188-235 routes this work to split slate-dom-v2 / slate-react-v2 ownership, explicit DOM selection bridge, explicit outside/nested-editor ownership, and cursor behavior around inline voids, zero-width boundaries, tables, and shadow DOM.
• docs/slate-issues/package-impact-matrix.md:77-81 keeps the owner as slate-dom-v2 + slate-react-v2; :115 says DOM point translation, native selection state, clipboard DOM, shadow DOM, or hit-testing starts in slate-dom.
• docs/slate-issues/test-candidate-map/ contains exact future proof rows for this policy family, including toDOMRange zero-width offset, shadow DOM findEventRange, programmatic clear DOM point errors, outside-to-inside native selection, nested editor selection, placeholder/IME DOM points, void findEventRange, nested editor DOMEditor.toSlatePoint, DOMEditor.findPath inside onChange, and mentions range projection.
• docs/slate-issues/benchmark-candidate-map.md:249 says this tranche does not surface a cleaner new benchmark target than existing large-document, selection, and batch-engine lanes. Do not invent a resolver-specific benchmark just to look thorough.

Pass verdict:

The nullable resolver API policy is the right architecture pressure response, but it does not create new fixed claims on its own. It strengthens the proof plan for existing DOM bridge rows. Exact issue promotion remains gated on implementation plus matching unit/browser/device proof.

Issue accounting from this pass:

• Fixed: unchanged. #4789 and #4984 stay fixed by existing browser proof.
• Improves: unchanged. #5947, #5938, #5760, and #4564 remain improves until exact repro proof exists.
• Related: unchanged. DOM point crash, invalid-selection, shadow DOM, findEventRange, mention range, focus/scroll, table boundary, and custom inline rows stay related unless the later implementation adds exact proof.
• Not claimed: unchanged. Ecosystem/app-owned DOM such as KaTeX-like custom rendering and table-model requests stay outside raw resolver closure unless Slate owns the boundary.

Plan delta:

• Marked the full issue-ledger pass complete.
• Raised the pass-gated score from 0.87 to 0.88.
• Kept fork dossier, coverage matrix, sync ledger, and PR reference unchanged because no classification or claim text changed.
• Added a hard proof-policy consequence: implementation must add resolver contract rows and browser rows before any issue promotion.

Open issues:

• Intent, outcome, scope, non-goals, and decision boundaries are still not explicit enough for closure.
• The decision brief still needs to compare strict-only, nullable resolver, public try*, rich result object, and swallow/catch alternatives.

Next owner: slate-ralplan.

Pass 4: Intent/Boundary And Decision Brief

Status: complete.

Skill used: intent-boundary-pass.

Evidence added:

• Read the active plan and session-scoped completion state.
• Reused live source inventory from pass 1 for current strict APIs, suppressThrow, and runtime strict projection call sites.
• Reused issue pressure from pass 3 for DOM point/path/range crash families.
• Applied the intent-boundary requirement directly in section 15.

Plan delta:

• Added an explicit intent record.
• Added desired outcome, in-scope rows, non-goals, and decision boundaries.
• Added a decision brief comparing strict-only, nullable resolver, public try*, public rich result, and catch/swallow alternatives.
• Recorded no user question because the repo and prior direction make the hard cut target clear enough.
• Raised the pass-gated score from 0.88 to 0.89.

Open issues:

• Ecosystem evidence still needs refresh before the plan can claim the naming and failure-policy split is field-aligned.
• Performance and hot-path allocation pressure still need a dedicated pass.
• Public API break risk still needs high-risk deliberate review.

Next owner: slate-ralplan.

Pass 5: Research, Ecosystem Strategy, And Live-Source Refresh

Status: complete.

Skill used: research-wiki in maintain mode.

Evidence added:

• Read research layer entrypoints: docs/research/README.md, docs/research/index.md, docs/research/log.md, and docs/research/commands/maintain.md.
• Read compiled source/decision pages for ProseMirror, Lexical, Tiptap, React 19.2, scroll/selection visibility, and Slate v2 runtime architecture.
• Re-read local official source for ProseMirror DOM strict/nullable behavior, Lexical tags/error/runtime behavior, Tiptap geometry/focus/scroll behavior, current Slate v2 DOM API and runtime call sites.
• Queried official React docs through Context7 for React 19.2 Activity, useSyncExternalStore, useTransition, useDeferredValue, and Performance Tracks.

Plan delta:

• Added section 16 with concrete steal/reject/diverge ecosystem synthesis.
• Confirmed no research-page edit is needed.
• Raised the pass-gated score from 0.89 to 0.90.

Open issues:

• Performance/DX/migration/regression/simplicity pressure passes still need to challenge hot-path allocation, API width, and migration blast radius.
• Maintainer objections still need direct answers.
• High-risk deliberate mode still needs to review the public suppressThrow hard cut.

Next owner: slate-ralplan.

Pass 6: Pressure Passes

Status: complete.

Skills used: performance-oracle, performance, vercel-react-best-practices, tdd, and react-useeffect.

Evidence added:

• Re-read live .tmp/slate-v2 strict/runtime projection call sites: packages/slate-dom/src/plugin/dom-editor.ts:69-108,1558-1580, packages/slate-react/src/editable/selection-controller.ts:284-287,492-495,609-612,737-742, packages/slate-react/src/editable/selection-reconciler.ts:622-625,891-920,933-936, packages/slate-react/src/editable/native-input-strategy.ts:56, packages/slate-react/src/editable/clipboard-input-strategy.ts:441, packages/slate-react/src/hooks/use-element-selected.ts:33-38, and site/examples/ts/mentions.tsx:123-129.
• Re-read live selector/rendering perf support: packages/slate-react/src/hooks/use-generic-selector.tsx:48-108, packages/slate-react/src/hooks/use-editor-selector.tsx:319-340, packages/slate-react/src/components/editable-text-blocks.tsx:136-145,1682-1761, and packages/slate-react/test/rendering-strategy-and-scroll.tsx:330-430.
• Re-read existing benchmark scripts in .tmp/slate-v2/package.json:11-30.
• Re-read Plate migration pressure examples in ../plate/packages/link/src/react/components/FloatingLink/useFloatingLinkEdit.ts:39-54, ../plate/packages/table/src/lib/queries/getTableCellSize.ts:35-53, and ../plate/packages/table/src/lib/queries/getSelectedCellsBorders.ts:83-92.
• Re-read slate-yjs operation/range boundaries in ../slate-yjs/packages/core/src/plugins/withYjs.ts:230-263, ../slate-yjs/packages/core/src/plugins/withYHistory.ts:130-148, and ../slate-yjs/packages/core/src/utils/position.ts:268-291.

Plan delta:

• Added section 17 pressure passes.
• Capped resolver API width.
• Added hot-path allocation law.
• Added existing benchmark/proof targets.
• Raised the pass-gated score from 0.90 to 0.91.

Open issues:

• Maintainer objection ledger still needs direct accepted answers for API width, strict throw behavior, nullable returns, and public breaking change risk.
• High-risk deliberate pass still needs to judge the public suppressThrow cut.
• Issue sync accounting remains unchanged until implementation changes claim text or proof state.

Next owner: slate-ralplan.

Pass 7: Slate Maintainer Objection Ledger

Status: complete.

Skill used: steelman-pass.

Evidence added:

• Re-read live .tmp/slate-v2 public DOM API and public suppressThrow option at packages/slate-dom/src/plugin/dom-editor.ts:69-108,1548-1581.
• Re-read live strict event-range behavior at packages/slate-dom/src/plugin/dom-editor.ts:530-604.
• Re-read live React/runtime catch and strict projection examples at packages/slate-react/src/editable/selection-controller.ts:276-290,735-744, packages/slate-react/src/editable/selection-reconciler.ts:928-938, and site/examples/ts/mentions.tsx:120-130.
• Re-read ProseMirror strict-vs-null bridge source at ../prosemirror-view/src/index.ts:373-423 and ../prosemirror-view/src/selection.ts:1-47.
• Re-read Lexical fatal error/update recovery source at ../lexical/packages/lexical/src/LexicalUpdates.ts:951-1032.

Plan delta:

• Added section 18 maintainer objection ledger.
• Accepted no new API names.
• Strengthened the adoption/docs contract for strict helpers vs resolvers.
• Kept suppressThrow excluded from the future API, with high-risk follow-up for public removal risk.
• Raised the pass-gated score from 0.91 to 0.92.

Open issues:

• High-risk deliberate pass still needs to judge the public suppressThrow removal risk and replacement docs.
• Ecosystem maintainer pass still needs to review final naming/failure policy.
• Issue sync accounting remains unchanged until implementation changes claim text or proof state.

Next owner: slate-ralplan.

Pass 8: High-Risk Deliberate Mode

Status: complete.

Skill used: high-risk-deliberate-pass.

Evidence added:

• Re-read live package/release surface: .tmp/slate-v2/package.json:47-52, .tmp/slate-v2/packages/slate-dom/package.json:1-4, and .tmp/slate-v2/packages/slate-react/package.json:1-4.
• Re-read documented public suppressThrow API in .tmp/slate-v2/docs/libraries/slate-react/react-editor.md:94-100.
• Re-read changelog evidence that suppressThrow: true behavior has shipped in .tmp/slate-v2/packages/slate-dom/CHANGELOG.md:20-24.
• Re-read live runtime source showing current suppressThrow, strict fallback, and catch behavior in packages/slate-dom/src/plugin/dom-editor.ts:69-108, packages/slate-react/src/editable/selection-controller.ts:276-290,735-744, and packages/slate-react/src/editable/selection-reconciler.ts:928-938.

Plan delta:

• Added section 19 high-risk deliberate pass.
• Kept resolver architecture.
• Revised the suppressThrow hard cut with explicit public removal risk.
• Added three-scenario pre-mortem, blast radius, expanded proof plan, and rollback/remediation answer.
• Raised the pass-gated score from 0.92 to 0.93.

Open issues:

• Revision pass must apply any high-risk/ecosystem wording changes.
• Issue sync accounting remains unchanged until implementation changes claim text or proof state.

Next owner: slate-ralplan.

Pass 9: Ecosystem Maintainer Pass

Status: complete.

Skill used: research-wiki in maintain mode.

Evidence added:

• Re-read ProseMirror strict/nullable DOM bridge behavior: ../prosemirror-view/src/index.ts:373-423, ../prosemirror-view/src/selection.ts:9-47, and ../prosemirror-view/src/domcoords.ts:275-288.
• Re-read Lexical side-effect tags and fatal error handling: ../lexical/packages/lexical/src/LexicalUpdateTags.ts:45-74, ../lexical/packages/lexical/src/LexicalUpdates.ts:616-632,951-1032, and ../lexical/packages/lexical/src/LexicalSelection.ts:3113-3160.
• Re-read Tiptap geometry/focus/scroll helpers: ../tiptap/packages/core/src/helpers/posToDOMRect.ts:5-35, ../tiptap/packages/core/src/commands/focus.ts:10-67, and ../tiptap/packages/core/src/commands/scrollIntoView.ts:15-22.
• Re-read current Slate v2 public DOM docs and surface: .tmp/slate-v2/docs/libraries/slate-react/react-editor.md:48-100 and .tmp/slate-v2/packages/slate-dom/src/plugin/dom-editor.ts:69-108.
• Re-read compiled research references for scroll/selection visibility, read/update runtime architecture, and lazy query API decisions.

Plan delta:

• Added section 20 ecosystem maintainer pass.
• Kept resolve* naming.
• Kept strict direct APIs plus nullable runtime/app bridge.
• Kept null, not undefined.
• Kept resolveRangeRect as a geometry primitive.
• Reaffirmed that try*, public Result, global error handlers, React error boundaries, ProseMirror positions, Lexical _onError, and Tiptap product commands are wrong public raw-Slate targets.
• Raised the pass-gated score from 0.93 to 0.94.

Open issues:

• Issue sync accounting remains unchanged until implementation changes claim text or proof state.

Next owner: slate-ralplan.

Pass 10: Revision Pass

Status: complete.

Evidence added:

• Re-scanned the active plan for stale release-channel wording around public suppressThrow, hard-cut language, implementation phases, proof greps, decision brief consequences, ecosystem synthesis, pressure pass, and maintainer objections.

Plan delta:

• Added section 21 revision pass.
• Raised the pass-gated score from 0.94 to 0.95.
• Updated top verdict and public API target to the hard-cut rule.
• Updated proof greps so suppressThrow is zero in active source, tests, docs, and examples, excluding generated site/out and historical changelogs.
• Updated implementation phase and decision brief language to avoid implying compatible public removal.
• Kept issue sync unchanged because no issue claim text changed.

Open issues:

• Issue sync accounting pass verified that no manual sync ledger, fork dossier, coverage matrix, or PR reference update is required.

Next owner: slate-ralplan.

Pass 11: Issue Sync Accounting

Status: complete.

Evidence added:

• Read docs/slate-v2/references/pr-description.md; it still carries 32 fixed issue claims and no suppressThrow, resolver, or release-channel claim that needs sync.
• Read docs/slate-v2/ledgers/issue-coverage-matrix.md; its fixed/related claim rules still require exact implementation and proof, and no row names this planning-only release-channel decision.
• Read docs/slate-v2/ledgers/fork-issue-dossier.md with targeted search for the API/release wording; current sections remain issue-proof accounting.
• Read docs/slate-issues/gitcrawl-v2-sync-ledger.md; manual live rows remain unchanged and no row uses this plan as proof owner.
• Ran a targeted no-match scan across the four sync artifacts for this plan, suppressThrow, resolver names, release-channel wording, deprecated compatibility, and public try* names.

Plan delta:

• Added section 22 issue sync accounting.
• Raised the pass-gated score from 0.95 to 0.96.
• Kept PR reference, issue coverage matrix, fork dossier, and manual live sync ledger unchanged because no issue claim text changed.

Open issues:

• Closure score and final gates verified every prior pass-state row and moved the lane to done.

Next owner: slate-ralplan.

Pass 12: Closure Score And Final Gates

Status: complete.

Evidence added:

• Verified pass-state rows 1-11 are complete with evidence.
• Verified issue/reference sync is complete and unchanged from pass 11.
• Verified the Slate v2 implementation-edit boundary was preserved.
• Verified the scoped completion state uses the active runtime id: active goal state.

Plan delta:

• Added section 23 closure score and final gates.
• Raised final pass-gated score from 0.96 to 0.97.
• Moved top-level plan status from pending to done.
• Moved scoped completion state to done.

Open issues:

• None for Slate Ralplan. Later implementation belongs to ralph.

Next owner: ralph when the user decides to execute.

Pass Schedule State

Next pass: none.