mastra-ai/mastra · error · Error

${componentName} must be used within EnvironmentVariablesEdi

Error message

${componentName} must be used within EnvironmentVariablesEditor.Root

What it means

useEnvironmentVariablesEditorContext(componentName) reads the EnvironmentVariablesEditorContext provided by EnvironmentVariablesEditor.Root. When the context is null the hook throws a message naming the offending component, enforcing that editor subcomponents (fields, rows, toolbar buttons) only render inside the Root.

Source

Thrown at packages/playground-ui/src/ds/components/EnvironmentVariablesEditor/environment-variables-editor-context.ts:42

export interface EnvironmentVariablesEditorContextValue {
  editor: EnvironmentVariablesEditorRenderController;
  disabled: boolean;
  readOnly: boolean;
  rowErrors?: EnvironmentVariablesEditorRowErrors;
}

export const EnvironmentVariablesEditorContext = createContext<EnvironmentVariablesEditorContextValue | null>(null);

export const EnvironmentVariablesEditorReadOnlyListContext = createContext({
  showIcon: false,
});

export function useEnvironmentVariablesEditorContext(componentName: string) {
  const context = use(EnvironmentVariablesEditorContext);

  if (!context) {
    throw new Error(`${componentName} must be used within EnvironmentVariablesEditor.Root`);
  }

  return context;
}

View on GitHub (pinned to 75dd419e61)

Solutions

Wrap the subtree in <EnvironmentVariablesEditor.Root>...</EnvironmentVariablesEditor.Root>.
Read the error message: the interpolated componentName tells you exactly which component is orphaned — fix its placement first.
If standalone usage is intended, add a nullable context hook variant instead of the throwing one.
Check for early returns/conditionals that render children without Root in the same render pass.

Example fix

// before
<EditorRow name="KEY" /> // no Root
// after
<EnvironmentVariablesEditor.Root editor={editor}>
  <EditorRow name="KEY" />
</EnvironmentVariablesEditor.Root>

Defensive patterns

Strategy: try-catch

Validate before calling

// Verify nesting before rendering the subcomponent:
// <EnvironmentVariablesEditor.Root editor={editor}> must be an ancestor.
// Runtime check with a nullable variant (if added):
const ctx = useMaybeEnvironmentVariablesEditorContext();
if (!ctx) throw new Error('EnvironmentVariablesEditor subcomponent used outside Root');

Type guard

function hasEditorContext(ctx: EnvironmentVariablesEditorContext | null): ctx is EnvironmentVariablesEditorContext {
  return ctx !== null;
}

Try / catch

// Hooks cannot be wrapped in try/catch; catch at the error boundary:
<ErrorBoundary fallback={<EditorSetupPrompt />}>
  <MyEditorSubcomponent />
</ErrorBoundary>

Prevention

Wrap every EnvironmentVariablesEditor subcomponent in its Root.
When reusing rows/fields elsewhere, pass the editor object as a prop instead of relying on context.
Read the thrown componentName to locate the orphaned component quickly.
Keep provider + consumers in the same feature module to prevent tree drift.

When it happens

Trigger: Rendering any EnvironmentVariablesEditor subcomponent (editor, disabled/readOnly consumers, row error consumers) outside <EnvironmentVariablesEditor.Root>; conditionally rendering Root away while children persist; composing subcomponents in a custom wrapper that breaks the provider chain.

Common situations: Reusing a row or field component in a different page without Root; snapshot/storybook usage that mounts subcomponents directly; refactoring that moved a child above the Root in the component tree.

Related errors

AI-assisted analysis of mastra-ai/mastra@75dd419e61 (2026-08-30). Data as JSON: /api/errors/512869d2c57ecb95. Report an issue: GitHub.