Slate v2 Test Candidate Map: 5558-5480

Scope

These TDD handoff notes cover issues #5558 through #5480 from the pilot set. Use the top-level index for range navigation and the dossiers for fuller thread context.

Issue #5558

package: slate
TDD readiness: not-a-test-candidate
public test seam: Operation-specific type guards

Why Not A Direct Test Candidate

This is an API-surface request, not one failing behavior with a canonical red assertion.

Issue #5557

package: slate
TDD readiness: ready-now
public test seam: Transforms.moveNodes later-sibling destination semantics

Minimal Repro Setup

document with four sibling blocks
match the first two blocks
call Transforms.moveNodes(editor, { at: [], to: [2], match })

Expected Failing Assertion

destination semantics should be defined against the pre-operation tree, not drift with each intermediate move

Issue #5551

package: ecosystem
TDD readiness: not-a-test-candidate
public test seam: Firefox rowspan table selection

Why Not A Direct Test Candidate

This depends on a custom table plugin plus Firefox-specific selection behavior. It is too ecosystem-specific for a default core red test.

Issue #5550

package: ecosystem
TDD readiness: not-a-test-candidate
public test seam: Web Component selection drag boundary

Why Not A Direct Test Candidate

Web Component encapsulation changes the DOM ownership model itself. That is outside the normal supported renderer contract.

Issue #5548

package: docs-only
TDD readiness: not-a-test-candidate
public test seam: Editor.start root-path usage

Why Not A Direct Test Candidate

The thread already resolves this with the correct API usage.

Issue #5538

package: slate-react
TDD readiness: blocked-on-repro
public test seam: focus-to-end scroll jump

Current Blocker

The thread mixes app-specific focus logic with a later broader complaint, but never lands a clean reduced repro.

Issue #5537

package: docs-only
TDD readiness: not-a-test-candidate
public test seam: raw DOM focus across multiple editors

Why Not A Direct Test Candidate

No reduced repro, and the reported focus method bypasses Slate’s own focus utilities.

Issue #5533

package: cross-package
TDD readiness: not-a-test-candidate
public test seam: op-first collaboration layer without Yjs

Why Not A Direct Test Candidate

This is a roadmap and architecture requirement, not a single failing behavior.

Issue #5532

package: cross-package
TDD readiness: ready-now
public test seam: triple-click drag anchor stability

Minimal Repro Setup

official richtext example
enough lines to allow triple-click block selection
triple-click a block, then keep dragging the mouse

Expected Failing Assertion

selection anchor should remain stable during one continuous block-selection gesture

Issue #5524

package: slate
TDD readiness: ready-with-minor-setup
public test seam: vertical navigation across soft breaks

Minimal Repro Setup

text node containing embedded soft breaks like `text in here

another line`

place cursor at end of first visual line
move with ArrowDown into the empty line

Expected Failing Assertion

the resulting selection point should reflect the new soft-break position consistently, not reuse the old line state

Issue #5520

package: docs-only
TDD readiness: not-a-test-candidate
public test seam: Node.common docs wording

Why Not A Direct Test Candidate

This is reference wording, not a runtime failure.

Issue #5515

package: slate-history
TDD readiness: not-a-test-candidate
public test seam: global undo/redo semantics

Why Not A Direct Test Candidate

This is a semantics and API design request, not a single broken current behavior.

Issue #5509

package: slate-react
TDD readiness: ready-with-minor-setup
public test seam: MobX observer rerender DOM point resolution

Minimal Repro Setup

wrap a parent component in mobx-react-lite observer
render <Slate> below it
trigger parent rerenders while typing

Expected Failing Assertion

DOM point resolution should stay stable without needing an extra memo boundary around the editor subtree

Issue #5508

package: slate
TDD readiness: ready-now
public test seam: CustomEditor override of OmitFirstArg members

Minimal Repro Setup

define CustomEditor as in the Slate TypeScript docs
override one BaseEditor member typed with OmitFirstArg
check the inferred editor type in examples or a compile test

Expected Failing Assertion

the inferred editor type should stay specific instead of collapsing to any

Issue #5507

package: repo-only
TDD readiness: not-a-test-candidate
public test seam: dependency maintenance and test coverage debt

Why Not A Direct Test Candidate

This is repo maintenance, not a product or runtime behavior.

Issue #5498

package: ecosystem
TDD readiness: not-a-test-candidate
public test seam: leaf padding cursor skip

Why Not A Direct Test Candidate

Padding text leaves changes the consumer-rendered DOM shape itself. That is not a stable core contract bug.

Issue #5493

package: slate-react
TDD readiness: ready-with-minor-setup
public test seam: Android first-letter duplication and missing set_selection

Minimal Repro Setup

Android Chrome or equivalent emulation with composition input
empty editor or first-character composition path
type the first composed character

Expected Failing Assertion

the first composed character should be inserted once, with the correct set_selection progression rather than duplicate text

Issue #5490

package: slate
TDD readiness: ready-now
public test seam: Transforms.setNodes merge callback typing

Minimal Repro Setup

TypeScript compile test around Transforms.setNodes with a typed merge callback
use both object-valued and scalar-valued props

Expected Failing Assertion

merge should be typed to the actual per-key values it receives instead of a generic object-only shape

Issue #5488

package: slate-react
TDD readiness: not-a-test-candidate
public test seam: external value replacement without controlled value

Why Not A Direct Test Candidate

This is an API-design and ergonomics issue, not one broken runtime invariant.

Issue #5487

package: slate
TDD readiness: ready-now
public test seam: createEditor base type in plugin composition

Minimal Repro Setup

compose two plugins where the second depends on the first
start from createEditor()
check whether incorrect plugin order fails at compile time

Expected Failing Assertion

createEditor() should expose a base type that allows plugin-order mistakes to be caught instead of being masked by the global Editor type

Issue #5485

package: cross-package
TDD readiness: ready-with-minor-setup
public test seam: Chrome backspace then retype caret placement

Minimal Repro Setup

Chrome editor instance
type a word like testing
backspace the last character and type it again

Expected Failing Assertion

after retyping, the caret should remain after the inserted character instead of jumping behind it

Issue #5484

package: cross-package
TDD readiness: ready-with-minor-setup
public test seam: Keyman Malayalam composition

Minimal Repro Setup

public richtext example
Keyman with the Mozhi Malayalam keyboard
type the provided Malayalam sequence

Expected Failing Assertion

composed Malayalam text should preserve the intended letters instead of dropping characters

Issue #5482

package: repo-only
TDD readiness: not-a-test-candidate
public test seam: release policy and semver expectations

Why Not A Direct Test Candidate

This is release-process feedback, not a product behavior that belongs in a red test.

Issue #5481

package: cross-package
TDD readiness: ready-now
public test seam: iOS placeholder non-selectability

Minimal Repro Setup

official Slate examples on iOS Safari or WebView
clear the editor so the placeholder shows
double-tap or select the placeholder text

Expected Failing Assertion

placeholder text should not become partially selectable at all

Issue #5480

package: cross-package
TDD readiness: not-a-test-candidate
public test seam: browser spellcheck replacement side effects

Why Not A Direct Test Candidate

The thread points at an upstream Chromium fix and a later real-world confirmation that the issue is gone.