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feat: add fieldTransforms support for basicSelector, styled* fields, price, and code field types - #1359

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@jwartofsky-yext

@jwartofsky-yext jwartofsky-yext commented Oct 8, 2026 •

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Tested in casual-dining, example-library, and standard-library

This CR also includes changes for image atom to return null instead of an error image when the image does not resolve.

Adds a new field type "themeColor". This is an "always transformed" field that returns the following data:

{
  selectedColor: "palette-primary",
  contrastingColor: "white",
  selectedColorCss: "var(--colors-palette-primary)",
  contrastingColorCss: "white"
}

You can see implementations of these transforms here:

yext-section-libraries/casual-dining#8

https://github.com/yext-section-libraries/example-section-library/pull/1

Slot support to come next

jwartofsky-yext and others added 17 commits October 6, 2026 20:05
When in the local-editor, setting a constant value for an image requires
and image modal popup, as Storm is not available.

This popup was removed in commit df6dc14 when removing the
"visual-editor/starter", but this may have been a mistake.

Testing:

Verified that image constant values can be selected when running dev
mode in a standard library locally.
# Conflicts:
#	packages/visual-editor/src/editor/README.md
#	packages/visual-editor/src/editor/VisualEditorRender.test.tsx
#	packages/visual-editor/src/fields/EntityFieldSelectorField.tsx
#	packages/visual-editor/src/fields/fieldTransforms/createYextFieldTransforms.ts
#	packages/visual-editor/src/fields/fieldTransforms/fieldToTransform.ts
#	packages/visual-editor/src/fields/fields.ts
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  • packages/visual-editor/src/components/atoms/image.tsx

Walkthrough

The changes add a themeColor field for palette and custom colors, and extend field transforms to resolve theme colors, styled-field values, code, and price-formatted entity fields. CustomCodeSection renders supplied HTML and JavaScript directly, while code-field transforms process HTML and JavaScript values. The Image component validates image URLs and reads alt text from nested complex-image data. Tests and documentation cover these updates.

Sequence Diagram(s)

sequenceDiagram
  participant VisualEditorRender
  participant createYextFieldTransforms
  participant fieldToTransform
  participant resolveCode
  VisualEditorRender->>createYextFieldTransforms: process field values
  createYextFieldTransforms->>fieldToTransform: select code-field handler
  fieldToTransform->>resolveCode: resolve code value
  resolveCode-->>fieldToTransform: return resolved code
  fieldToTransform-->>VisualEditorRender: return transformed value
Loading

Priority: ➖ Normal

Change: Feature

Merge Risk: 🟡 Moderate · up to fb435

Price-formatted repeated fields can produce the wrong value, and interpolated entity text can change executable JavaScript. Resolve these concerns before merging; failed images can also remain visible as broken elements.

Pre-merge checks · Passed 4
Passed Passed checks (4 passed)
Check name Status Explanation
Description check Passed The description directly covers field transform support, the new themeColor field type, image fallback behavior, testing, and follow-up scope. It is clearly related to the changeset.
Title check Passed The title clearly summarizes the primary change: adding fieldTransforms support for basicSelector, styled fields, price, and code field types. It is concise and related to the changeset.
Linked Issues check Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check Passed Check skipped because no linked issues were found for this pull request.

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github-actions Bot and others added 3 commits October 8, 2026 21:59
…string by default, or a surface value containing the authored color and resolved background/foreground colors.

Moved color editing into [ThemeColorField.tsx](/Users/jwartofsky/pages/visual-editor/packages/visual-editor/src/fields/ThemeColorField.tsx) and shared dropdown behavior into [BasicSelectorCombobox.tsx](/Users/jwartofsky/pages/visual-editor/packages/visual-editor/src/fields/BasicSelectorCombobox.tsx). Existing basicSelector color fields still author the same values.
Updated field registration, render-prop typing, built-in styled fields, docs, and tests for the new type.
Extracted price formatting into [entityFieldFormats.ts](/Users/jwartofsky/pages/visual-editor/packages/visual-editor/src/fields/fieldTransforms/entityFieldFormats.ts); its behavior is unchanged.

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⚠️ Outside diff range comments (1)

🟠 Major · Escape [[field]] values in HTML code transforms. · code.ts:7-18

packages/visual-editor/src/fields/fieldTransforms/code.ts:7-18
🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

Escape [[field]] values in HTML code transforms.

CustomCodeSection opts its HTML field into resolveCode. The HTML branch now runs resolveEmbeddedFieldsInString after Handlebars interpolation. That helper inserts entity values with String(resolvedValue) and no HTML escaping.

A string field containing markup or an event handler can therefore reach dangerouslySetInnerHTML as HTML. The base implementation did not resolve [[field]] values in HTML, so this behavior is introduced by the new HTML transform. Escape embedded values only for HTML code fields. Keep {{{description.html}}} unchanged for intentional raw HTML.

Suggested fix
diff --git a/packages/visual-editor/src/fields/fieldTransforms/code.ts b/packages/visual-editor/src/fields/fieldTransforms/code.ts
@@
     field.codeLanguage === "html"
       ? processHandlebarsTemplate(value ?? "", context.streamDocument)
       : (value ?? ""),
     context.streamDocument,
-    context.locale
+    context.locale,
+    field.codeLanguage === "html"
   );
 }
diff --git a/packages/visual-editor/src/utils/resolveYextEntityField.ts b/packages/visual-editor/src/utils/resolveYextEntityField.ts
@@
+import Handlebars from "handlebars";
 import { type YextEntityField } from "../editor/YextEntityFieldSelector.tsx";
@@
   stringToResolve: string,
   streamDocument: StreamDocument | undefined,
-  locale?: string
+  locale?: string,
+  escapeHtmlValues = false
 ): string => {
@@
     if (typeof resolvedValue === "number") {
-      return resolvedValue.toString();
+      const value = resolvedValue.toString();
+      return escapeHtmlValues ? Handlebars.escapeExpression(value) : value;
     }
@@
     if (typeof resolvedValue === "object") {
-      return JSON.stringify(resolvedValue);
+      const value = JSON.stringify(resolvedValue);
+      return escapeHtmlValues
+        ? Handlebars.escapeExpression(value)
+        : value;
     }
 
-    return String(resolvedValue);
+    const value = String(resolvedValue);
+    return escapeHtmlValues ? Handlebars.escapeExpression(value) : value;
   });
 };
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Review comment at @packages/visual-editor/src/fields/fieldTransforms/code.ts
around lines 7 - 18:
Update resolveCode and resolveEmbeddedFieldsInString so values inserted from
[[field]] references are HTML-escaped only for HTML code fields. Preserve raw
Handlebars triple-brace output such as {{{description.html}}} and leave non-HTML
transforms unchanged.

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Outside diff comments:
Review comments at @packages/visual-editor/src/fields/fieldTransforms/code.ts:
- Around line 7-18: Update resolveCode and resolveEmbeddedFieldsInString so
values inserted from [[field]] references are HTML-escaped only for HTML code
fields. Preserve raw Handlebars triple-brace output such as
{{{description.html}}} and leave non-HTML transforms unchanged.

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📒 Files selected for processing (22)
  • packages/visual-editor/src/components/atoms/background.tsx
  • packages/visual-editor/src/components/atoms/pageSection.tsx
  • packages/visual-editor/src/editor/README.md
  • packages/visual-editor/src/fields/BasicSelectorCombobox.tsx
  • packages/visual-editor/src/fields/BasicSelectorField.test.tsx
  • packages/visual-editor/src/fields/BasicSelectorField.tsx
  • packages/visual-editor/src/fields/EntityFieldSelectorField.tsx
  • packages/visual-editor/src/fields/ThemeColorField.test.tsx
  • packages/visual-editor/src/fields/ThemeColorField.tsx
  • packages/visual-editor/src/fields/fieldOverrides.ts
  • packages/visual-editor/src/fields/fieldTransforms/createYextFieldTransforms.test.tsx
  • packages/visual-editor/src/fields/fieldTransforms/createYextFieldTransforms.ts
  • packages/visual-editor/src/fields/fieldTransforms/entityFieldFormats.ts
  • packages/visual-editor/src/fields/fieldTransforms/fieldToTransform.ts
  • packages/visual-editor/src/fields/fieldTransforms/themeColor.ts
  • packages/visual-editor/src/fields/fields.ts
  • packages/visual-editor/src/fields/index.ts
  • packages/visual-editor/src/fields/styledFields/ComprehensiveCTAField.tsx
  • packages/visual-editor/src/fields/styledFields/StyledTextField.tsx
  • packages/visual-editor/src/utils/colors.ts
  • packages/visual-editor/src/utils/index.ts
  • packages/visual-editor/src/utils/themeConfigOptions.ts
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  • packages/visual-editor/src/editor/README.md

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Comment thread packages/visual-editor/src/components/atoms/image.tsx
@jwartofsky-yext
jwartofsky-yext marked this pull request as ready for review October 12, 2026 14:02
@jwartofsky-yext jwartofsky-yext self-assigned this Oct 12, 2026
@jwartofsky-yext
jwartofsky-yext marked this pull request as draft October 12, 2026 15:30
@jwartofsky-yext
jwartofsky-yext marked this pull request as ready for review October 12, 2026 16:07
Comment thread packages/visual-editor/src/components/atoms/image.tsx
* ComprehensiveCTAField imports YextAutoField, which uses the field override registry.
* A function declaration lets the registry reference this override during module initialization.
*/
export function ComprehensiveCTAFieldOverride({

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Why the switch away from arrow syntax?

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This was causing problems and making the Node 20.x tests fail

It was causing an import cycle
ComprehensiveCTAField → YextAutoField → fieldOverrides → ComprehensiveCTAField

This change breaks the cycle, but is a bit hacky

I'm looking at a better way to resolve this

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yes, this fix is needed to make the import declarations available during field registry initialization

using the function pattern here fixes the import timing

I've updated some of the other overrides to use this function pattern as it is more durable

import { type StreamDocument } from "./types/StreamDocument.ts";

/** An authored theme color with render-ready CSS for both selected and contrasting colors. */
export type ResolvedThemeColor = ThemeColor & {

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Would it be possible to simplify ResolvedThemeColor to just selectedColorCss and contrastingColorCss? I presume that we use the ThemeColor properties in some places so it's not, I just wonder if it would be less confusing if the transform only output the usable css

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yes

there's some complication though

Background and Page expect the "non resolved" background values

We could have those atoms accept either shape

We would have to extend this "either shape" path through BackgroundProvider aswell

There are libraries that read from BackgroundProvider and expect to have the unresolved values though

It would be difficult to fully separate these without making it breaking. Maybe breaking is OK though, but in that case we don't really need "transform: true" at all

This pattern here is the "safe" pattern for migration if we want this to stay backwards compatible

Comment thread packages/visual-editor/src/components/atoms/pageSection.tsx

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🟡 Minor · Exclude repeated fields from the price-format contract. · EntityFieldSelectorField.tsx:77

packages/visual-editor/src/fields/EntityFieldSelectorField.tsx:77
🗄️ Data Integrity & Integration | 🟡 Minor | ⚡ Quick win

Exclude repeated fields from the price-format contract.

If a field sets repeated, transform: true, and format: "price", the transform dispatch returns an item array before it calls the price formatter. The declared transformed value is string | undefined, so consumers receive the wrong shape and the prices remain unformatted. Reject this combination in the field type and transform dispatch, or define and implement array formatting.

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Review comment at
@packages/visual-editor/src/fields/EntityFieldSelectorField.tsx at line 77:
Update the EntityFieldSelectorField type and transform dispatch to reject the
combination of repeated, transform: true, and format: "price"; repeated price
fields must not enter the scalar price-formatting path or produce an array
contrary to the declared transformed value.

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Outside diff comments:
Review comments at
@packages/visual-editor/src/fields/EntityFieldSelectorField.tsx:
- Line 77: Update the EntityFieldSelectorField type and transform dispatch to
reject the combination of repeated, transform: true, and format: "price";
repeated price fields must not enter the scalar price-formatting path or produce
an array contrary to the declared transformed value.

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  • packages/visual-editor/src/fields/CTASelectorField.tsx
  • packages/visual-editor/src/fields/EntityFieldSelectorField.tsx
  • packages/visual-editor/src/fields/ImageField.tsx
  • packages/visual-editor/src/fields/MultiSelectorField.tsx
  • packages/visual-editor/src/fields/fieldTransforms/createYextFieldTransforms.test.tsx
  • packages/visual-editor/src/utils/colors.test.ts
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@jwartofsky-yext
jwartofsky-yext marked this pull request as draft October 12, 2026 18:33
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jwartofsky-yext marked this pull request as ready for review October 12, 2026 19:04
…de field outside of importing CustomCodeSection.

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Inline comments:
Review comments at @packages/visual-editor/src/fields/fieldTransforms/code.ts:
- Around line 15-20: Update resolveCode’s JavaScript branch to interpolate
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  • packages/visual-editor/src/fields/CodeField.tsx
  • packages/visual-editor/src/fields/fieldTransforms/code.ts
  • packages/visual-editor/src/fields/fieldTransforms/createYextFieldTransforms.test.tsx
  • packages/visual-editor/src/fields/fieldTransforms/entityFieldFormats.ts
  • packages/visual-editor/src/fields/fieldTransforms/fieldToTransform.ts
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Comment thread packages/visual-editor/src/fields/fieldTransforms/code.ts
Comment thread packages/visual-editor/src/fields/CodeField.tsx
}
return rawImage as ImageType | ComplexImageType | AssetImageType;
}, [rawImage, i18n.language]);
const [failedImageUrl, setFailedImageUrl] = React.useState<string>();

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Do we need this failedImageUrl stuff?

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it doesn't seem necessary for the change to have unresolved images return null

tested and removed

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actually it is helpful

this makes it so that we don't attempt to fetch an invalid image URL twice and also makes it so that if an image fails to load, we don't render the component

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ok I guess that makes sense

Does it reset if you use a different (working) url after an invalid one?

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yup!

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Inline comments:
Review comments at @packages/visual-editor/src/components/atoms/image.tsx:
- Around line 81-89: Update the native img branch in Image to handle request
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Comment thread packages/visual-editor/src/components/atoms/image.tsx

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