Fix versioning diff re-render over suggestion docs; surface recovered sync errors - #2989
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YousefED wants to merge 14 commits into
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Fix versioning diff re-render over suggestion docs; surface recovered sync errors#2989YousefED wants to merge 14 commits into
YousefED wants to merge 14 commits into
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removeAndInsertBlocks re-resolved ids via getNodeId(node, tr.doc) while
deleting, but a suggested-deletion copy's id is positional — deleting the
live block shifted the copy's index mid-walk, so ids captured from
editor.document no longer matched ("Blocks with the following IDs could not
be found: middle-1"). This silently broke re-entering a versioning diff
preview whose rendered doc contained a moved block (the gallery's Diff pane
stopped updating). Resolve against the doc the ids came from instead.
The versioning e2e now re-enters the preview after a follow-up edit for
every scenario — the exact operation that failed.
Deleted copies rendered by suggestion / version-diff mode duplicate a live block's id and are only disambiguated positionally, so diffing them across the before/after docs misreported unchanged copies as delete+insert pairs whenever their position shifted. They are rendering artifacts, not document blocks — skip their subtrees in the snapshots.
The cache is keyed by node object, but a deletion-marked node's positional id can change while the node object stays identical — so cache hits can serve stale or aliased ids. Accepted for now (suggestion rendering is experimental and the fake-id scheme is slated for rework); the it.fails tests pin the behavior that rework must satisfy.
Styled-text runs were keyed by their text (two same-text or empty runs collided) and block fragments by block id (documents built outside the editor can leave ids empty, aliasing every sibling to the key ""). The transform builds the tree in a single pass, so positional keys are correct. Found by the new e2e console guard via React's duplicate-key error during PDF export.
2.0.0-7 ships the onInternalError debugging hook natively (upstreamed via yjs/y-prosemirror#273), so the patch no longer needs to modify the sync catch. The 2.0.0-7 patch carries: threading onInternalError through syncPlugin (upstream only wires it on YSyncRdt), the sync-utils/index export-list and pauseSync type fixes, and the ported drop-invalid-nodes hunks (yjs/y-prosemirror#258) that 2.0.0-7 does not include upstream.
When the Y-side apply throws mid-sync, y-prosemirror reverts the unappliable part and logs a console warning — the editor keeps working but the cause is easy to miss (this hid a broken versioning re-render for two months). Feed syncPlugin's onInternalError into a module-scoped observer registry (onYSyncInternalError) so diagnostics harnesses can observe every editor without threading an option through each construction.
…hain observeDeep fires inside the transaction that changed the threads, and the comments extension's subscriber walks the whole doc and dispatches mark updates — running that synchronously inside the commit misattributes subscriber failures to the sync machinery and blocks the committing transaction on getThreads(). A coalesced microtask defers it.
Some dependencies deliberately reduce hard failures to console output — most importantly y-prosemirror's last-resort sync catch, which is exactly how the versioning re-render bug stayed invisible. Fail any test that produces a console.error (allowlist-able), a console.warn matching known swallowed-error patterns, or an internal error observed via onYSyncInternalError (which carries the original stack).
…chain Rendering the Diff synchronously inside the afterDoc update handler ran enterPreview within the typing editor's Y transaction commit — a failure there was swallowed by that editor's sync catch and interrupted the remaining observers mid-forward. A coalesced microtask lets the CRDT forwarding complete untouched and makes a render failure surface as a real uncaught error.
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📝 WalkthroughWalkthroughThe PR updates ChangesYjs versioning and synchronization
PDF export key generation
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to Editing suggestion-mode documents may still produce stale or duplicate block IDs, which can affect block-based operations in that experimental mode; the limitation is documented and requires explicit owner awareness and follow-up. Sequence Diagram(s)sequenceDiagram
participant User
participant VersioningTest
participant YDoc
participant PreviewRenderer
User->>VersioningTest: Apply follow-up edit
VersioningTest->>YDoc: Wait for and merge update
VersioningTest->>PreviewRenderer: Re-enter version preview
PreviewRenderer-->>VersioningTest: Render updated diff
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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🛠️ Fix failing CI checks 💡
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The shared testDocument is a snapshot fixture whose blocks deliberately
carry empty-string ids (real ids would be minted at module load and make
exporter snapshots non-deterministic). Empty ids violate the editor's id
contract — getNodeId throws on them — which crashed the large-diff
scenarios' apply calls ("Node blockContainer does not have an ID"), the
last known versioning crasher. Follow the conversion-test convention and
assign ids consumer-side via addIdsToBlocks, on a clone so the shared
fixture stays untouched.
The large-diff-delete-all scenario passes the versioning e2e now, so the
VERSIONING_CRASHES skip is gone: all 66 scenarios run, none skipped.
…erender # Conflicts: # packages/core/src/api/getBlocksChangedByTransaction.test.ts # packages/core/src/api/getBlocksChangedByTransaction.ts
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Aug 20, 2026
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| // Deferred out of the Yjs observer chain: `observeDeep` fires inside the | ||
| // transaction that changed the threads (a local comment edit, or a remote | ||
| // update mid-apply on the provider's chain). Subscribers do real work — | ||
| // the comments extension walks the whole doc and dispatches mark updates — | ||
| // and running that synchronously inside the commit means a subscriber | ||
| // failure unwinds into the sync machinery and gets misattributed there | ||
| // (see the suggestion gallery's deferred `renderDiff` for the same | ||
| // pattern). The microtask also coalesces observer bursts into a single | ||
| // callback and moves the `getThreads()` materialization out of the | ||
| // committing transaction. |
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was this observed or speculative?
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It was observed in the gallery (see the other comment thread).
Question is whether we want to guard this handler as well (and if so, how).
Errors in this.getThreads() would currently not surface, (or just as a console.warn)
| } | ||
| }); | ||
| }; | ||
| setup.afterDoc.on("update", scheduleRenderDiff); |
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If we really do need this (which I do question design-wise if we should), then we should at least extract this to a separate utility that is a thunk, taking in the callback to execute, and returns a function which will defer the execution of that function until the next microtask.
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I do think it's an issue that the error of 1 editor breaks the other (because the error is triggered in the listener).
I'd say we either need:
- a
try / catcharound the handler, and log + rethrow errors there manually (and / or callreportError?) - the current solution (a microtask to decouple them)
- have this handled at y-prosemirror level
Without any of these, we don't notice the error, but just get broken behavior (a stale diff editor that's not updated anymore).
fyi, The way to reproduce this issue is shown in the video at Move paragraph up in this doc
Preferred solution?
Missed alongside the xl-pdf-exporter key change — math-block's own pdf snapshot embeds the fragment keys, which are positional now.
'ResizeObserver loop completed with undelivered notifications' is a benign, browser-generated layout notice (a frame's observations were superseded before delivery). It fires under CI load — WebKit and Firefox especially — and vitest surfaces it as a console error, which the guard then treated as a swallowed failure.
@blocknote/ariakit
@blocknote/code-block
@blocknote/core
@blocknote/diagram-block
@blocknote/mantine
@blocknote/math-block
@blocknote/react
@blocknote/server-util
@blocknote/shadcn
@blocknote/xl-ai
@blocknote/xl-docx-exporter
@blocknote/xl-email-exporter
@blocknote/xl-multi-column
@blocknote/xl-odt-exporter
@blocknote/xl-pdf-exporter
commit: |
V8 stacks begin with the 'Name: message' line, but WebKit and Firefox stacks contain only frames — so the guard's allowlist patterns (matched against the formatted text) never saw the message on those engines, and the allowlisted ResizeObserver notice still failed their CI shards. Compose message + stack explicitly.
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Actionable comments posted: 1
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Inline comments:
In `@packages/core/src/api/nodeConversions/nodeToBlock.ts`:
- Around line 409-414: Update nodeToBlock’s cache handling to bypass both cache
reads and writes whenever isSuggestedDeletionNode(node) is true, ensuring
positional IDs are recalculated for every suggested-deletion block; preserve
existing caching for other nodes and remove the related it.fails markers in
nodeToBlock.test.ts once the tests pass.
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Fix all unresolved CodeRabbit comments on this PR:
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⛔ Files ignored due to path filters (5)
packages/math-block/src/pdf-exporter/__snapshots__/exampleWithMathMappings.jsxis excluded by!**/__snapshots__/**packages/xl-pdf-exporter/src/pdf/__snapshots__/example.jsxis excluded by!**/__snapshots__/**packages/xl-pdf-exporter/src/pdf/__snapshots__/exampleWithHeaderAndFooter.jsxis excluded by!**/__snapshots__/**packages/xl-pdf-exporter/src/pdf/__snapshots__/exampleWithMultiColumn.jsxis excluded by!**/__snapshots__/**pnpm-lock.yamlis excluded by!**/pnpm-lock.yaml
📒 Files selected for processing (19)
examples/07-collaboration/10-suggestion-multi-editor/package.jsonexamples/07-collaboration/13-versioning-yjs14/package.jsonexamples/07-collaboration/14-suggestion-gallery/src/App.tsxexamples/07-collaboration/14-suggestion-gallery/src/scenarios.tsexamples/08-extensions/02-versioning/package.jsonpackages/core/package.jsonpackages/core/src/api/blockManipulation/commands/replaceBlocks/replaceBlocks.test.tspackages/core/src/api/blockManipulation/commands/replaceBlocks/replaceBlocks.tspackages/core/src/api/getBlocksChangedByTransaction.test.tspackages/core/src/api/getBlocksChangedByTransaction.tspackages/core/src/api/nodeConversions/nodeToBlock.test.tspackages/core/src/api/nodeConversions/nodeToBlock.tspackages/core/src/y/comments/YjsThreadStoreBase.tspackages/core/src/y/extensions/YSync.tspackages/xl-pdf-exporter/src/pdf/pdfExporter.tsxpatches/@y__prosemirror@2.0.0-7.patchpnpm-workspace.yamltests/src/end-to-end/y-prosemirror/versioning.test.tsxtests/vitestSetup.browser.ts
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The bug
Editing "Version 2" in the suggestion gallery's versioning mode silently stopped updating the Diff pane whenever the rendered diff contained a moved block — broken since the versioning mode shipped, and invisible because the failure was swallowed (see "Observability" below).
Root cause:
removeAndInsertBlocksre-resolved target ids viagetNodeId(node, tr.doc)while deleting. A suggested-deletion copy's id is positional (middle-1= "the deletion-marked node with 1 same-id node before it"), so deleting the live block shifted the copy's index mid-walk and ids captured fromeditor.documentno longer matched (Blocks with the following IDs could not be found: middle-1). This fired on every preview re-entry (clearDocumentForConfigure→removeBlocks(editor.document)) — no user editing required.Fixes
removeAndInsertBlocksresolves ids against the doc the ids came from (the pre-removal snapshot). Unit test + e2e coverage: the versioning e2e now re-enters the preview after a follow-up edit for every scenario — the exact operation that broke (red before the fix on both move scenarios, all 3 browsers).getBlocksChangedByTransaction) excludes suggested-deletion subtrees from its snapshots: they duplicate a live block's id and are positional render artifacts, so diffing them across before/after docs emitted phantom delete+insert pairs for untouched copies.block.id— same-text/empty runs and empty ids aliased siblings to one key. Positional keys are correct here (single-pass transform). Found by the new console guard.Known limitation, documented instead of fixed
The editor's
blockCache(keyed by node object) can serve stale/aliased ids for suggested-deletion blocks — only reachable while editing suggestion-mode docs, which is experimental and whose fake-id scheme is slated for rework. A NOTE at the cache and twoit.failstests pin the contract that rework must satisfy.Observability (why this stayed invisible for two months)
The gallery re-rendered the diff synchronously inside the Yjs
updateobserver — i.e. inside the typing editor's transaction commit — so the throw unwound into that editor's y-prosemirror last-resort catch and became aconsole.warn, misattributed and invisible to tests. Three layers address the class:@y/prosemirror2.0.0-7 ships anonInternalErrorhook (upstreamed via feat:onInternalErroroption to observe recovered sync errors yjs/y-prosemirror#273); the pnpm patch shrinks to: threading the option throughsyncPlugin, the pre-existing type/export fixes, and the ported drop-invalid-nodes hunks (Handle invalid schemas due to concurrent changes yjs/y-prosemirror#258) that 2.0.0-7 doesn't include.onYSyncInternalError(new,@blocknote/core/y): module-scoped observer registry fed by that hook, so harnesses can watch every editor.vitestSetup.browser.ts): any test now fails onconsole.error, on known swallowed-error warn patterns, or on an observed internal error (with the original stack). Validated by forcingapplyDeltato throw in a mounted editor.observeDeep) now defer their heavy work out of the observer chain via coalesced microtasks — failures surface as real uncaught errors and CRDT forwarding is never interrupted.Validation
it.failsdocumenting the blockCache limitation).🤖 Generated with Claude Code
Summary by CodeRabbit
Bug Fixes
New Features
Tests