isCrossFieldExpression

Detects if a ConditionalExpression references other fields (cross-field).

This is the core detection function that handles ALL expression types:

• fieldValue with fieldPath → Always cross-field
• formValue → Always cross-field
• javascript with formValue.* in expression → Cross-field
• custom → Checks registered function scope, defaults to cross-field if unknown
• and/or → Recursively check nested conditions

Presentation

function isCrossFieldExpression(
  expr: boolean | ConditionalExpression | FormStateCondition | undefined,
  context?: CrossFieldDetectionContext | undefined,
): boolean;

Returns

Parameters