feat(editor): EmailBuilder canvas and lossless template serialization - #92
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…tion Integrate the EmailBuilder.js visual editor surface and load/serialize helpers so consumers can round-trip template.json, metadata.json, and preview.json without information loss. Closes #40 Co-authored-by: Cursor <cursoragent@cursor.com>
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Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe editor package now includes a controlled EmailBuilder canvas, nested block editing, typed template documents, and validated deterministic serialization for template source files. Fixtures and tests cover rendering, round trips, unknown fields, and compiler compatibility. ChangesEmail template editing
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟠 High · up to The editor adds canvas-based template editing and lossless serialization, but current-head issues can prevent edits from being persisted, cause render-time failures for consumers, and allow invalid template data to be accepted. These concrete correctness and runtime risks should be fixed before merging. Sequence Diagram(s)sequenceDiagram
participant EmailTemplateEditor
participant EmailBuilderCanvas
participant CanvasEditorProvider
participant EditorBlock
participant CoreEditorBlock
EmailTemplateEditor->>EmailBuilderCanvas: Pass template document and onChange
EmailBuilderCanvas->>CanvasEditorProvider: Create editable document context
CanvasEditorProvider->>EditorBlock: Render root block
EditorBlock->>CoreEditorBlock: Resolve block and render editor
CoreEditorBlock-->>EmailBuilderCanvas: Display canvas
CoreEditorBlock->>CanvasEditorProvider: Patch edited document
CanvasEditorProvider-->>EmailTemplateEditor: Return updated document
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (1 warning, 1 inconclusive)
✅ Passed checks (3 passed)
Full details: Description checkExplanation The description includes the linked issue, a clear summary, and test results. It does not include the required human-validation setup, step-by-step expected results, or feedback focus, but it is mostly complete and relevant. Full details: Linked Issues checkExplanation Most objectives in [ Resolution Confirm that packages/post-kit-editor/package.json declares Full details: Docstring CoverageExplanation Docstring coverage is 3.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 30 functions across 21 files. (1 skipped: 1 unsupported.)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 7
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Inline comments:
In `@packages/post-kit-editor/package.json`:
- Around line 41-42: Update the package manifest so react and react-dom are
removed from runtime dependencies, added to devDependencies for local
development, and retained in peerDependencies for consumers.
In `@packages/post-kit-editor/src/canvas/blocks/ColumnsContainerPropsSchema.ts`:
- Around line 10-16: Update ColumnsContainerPropsSchema and
ColumnsContainerEditor.updateColumn to preserve unknown fields: configure the
props and column object schemas with passthrough behavior, and merge the
existing column object before replacing childrenIds so other column fields
survive edits. Add a regression test that verifies unknown props and
edited-column fields remain after updateColumn.
In `@packages/post-kit-editor/src/canvas/blocks/ContainerEditor.tsx`:
- Line 33: Preserve unknown block data when updating child IDs: in
packages/post-kit-editor/src/canvas/blocks/ContainerEditor.tsx lines 33-33,
merge currentBlock.data.props before setting childrenIds; in
packages/post-kit-editor/src/canvas/blocks/ColumnsContainerEditor.tsx line 31,
merge the existing column before setting childrenIds; and in lines 36-42, merge
the current ColumnsContainer data instead of reconstructing it from known
fields.
In `@packages/post-kit-editor/src/canvas/blocks/EmailLayoutEditor.tsx`:
- Around line 42-44: Update the onClick handler in EmailLayoutEditor so it
clears the selected block only when event.target equals event.currentTarget,
preserving AddBlockButton’s onSelect selection for child clicks.
In `@packages/post-kit-editor/src/canvas/editor-core.tsx`:
- Line 82: Remove the placehold.co fallback from the image block URL handling
near data.props?.url and render the established local empty state when the URL
is absent, while preserving normal rendering for valid URLs. First add a failing
regression test covering an image block without url, then update the relevant
editor-core image rendering logic to make it pass.
In `@packages/post-kit-editor/src/email-template-editor.tsx`:
- Around line 41-45: Update handleDocumentChange so canvas edits invoke the
existing onSave consumer callback with workingFiles containing the updated
templateJson, while preserving the local state update. Add an interaction test
that edits the document and verifies onSave receives the updated templateJson.
In `@packages/post-kit-editor/src/serialization.ts`:
- Around line 24-29: Strengthen assertTemplateJson to validate that root is a
non-null, non-array object with the expected block discriminator before
loadTemplateSource casts it to EmailBuilderDocument; otherwise throw
TemplateSourceError using the existing invalid-document message. Add regression
tests covering null, arrays, and objects lacking the discriminator.
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📒 Files selected for processing (30)
packages/post-kit-editor/package.jsonpackages/post-kit-editor/src/__fixtures__/minimal/metadata.jsonpackages/post-kit-editor/src/__fixtures__/minimal/preview.jsonpackages/post-kit-editor/src/__fixtures__/minimal/template.jsonpackages/post-kit-editor/src/__fixtures__/nested-blocks/metadata.jsonpackages/post-kit-editor/src/__fixtures__/nested-blocks/preview.jsonpackages/post-kit-editor/src/__fixtures__/nested-blocks/template.jsonpackages/post-kit-editor/src/__fixtures__/unknown-field/metadata.jsonpackages/post-kit-editor/src/__fixtures__/unknown-field/preview.jsonpackages/post-kit-editor/src/__fixtures__/unknown-field/template.jsonpackages/post-kit-editor/src/canvas/EditorBlock.tsxpackages/post-kit-editor/src/canvas/EmailBuilderCanvas.tsxpackages/post-kit-editor/src/canvas/blocks/ColumnsContainerEditor.tsxpackages/post-kit-editor/src/canvas/blocks/ColumnsContainerPropsSchema.tspackages/post-kit-editor/src/canvas/blocks/ContainerEditor.tsxpackages/post-kit-editor/src/canvas/blocks/ContainerPropsSchema.tspackages/post-kit-editor/src/canvas/blocks/EmailLayoutEditor.tsxpackages/post-kit-editor/src/canvas/blocks/EmailLayoutPropsSchema.tspackages/post-kit-editor/src/canvas/editor-context.tsxpackages/post-kit-editor/src/canvas/editor-core.tsxpackages/post-kit-editor/src/canvas/helpers/AddBlockMenu.tsxpackages/post-kit-editor/src/canvas/helpers/EditorBlockWrapper.tsxpackages/post-kit-editor/src/canvas/helpers/EditorChildrenIds.tsxpackages/post-kit-editor/src/canvas/helpers/block-templates.tspackages/post-kit-editor/src/email-template-editor.tsxpackages/post-kit-editor/src/index.spec.tsxpackages/post-kit-editor/src/index.tspackages/post-kit-editor/src/serialization.spec.tspackages/post-kit-editor/src/serialization.tspackages/post-kit-editor/src/types.ts
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Keep React as peers only, preserve unknown block fields on canvas edits, clear selection only on layout-background clicks, remove placehold.co image fallback, and reject invalid template.json root values. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
@singleton-sd/post-kit-editorusing@usewaypoint/email-builder@0.0.9and the waypoint block editor stack (no global store; controlled React context).loadTemplateSource()/serializeTemplateSource()for lossless, deterministic round-trips oftemplate.json,metadata.json, andpreview.json, preserving unknown forward-compatible fields.EmailTemplateEditorto hold workingTemplateSourceFilesin local state and updatetemplateJsonfrom canvas edits.Test plan
pnpm --filter @singleton-sd/post-kit-editor run test(15 tests: serialization round-trips, validation errors, compiler compatibility, canvas render)pnpm test(full workspace)Lint / test / buildgreen on PRCloses #40
Made with Cursor
Summary by CodeRabbit
New Features
Bug Fixes