Function mergeWithDefaults

context/toolPropertiesStore.ts:180–189

(
  tool: K,
  existing?: Partial<ToolPropertiesMap[K]>
)

 * Only the supported fields are returned (i.e. defaults auto-fill only valid fields).
 */
const mergeWithDefaults = <K extends ToolKey>(
  tool: K,
  existing?: Partial<ToolPropertiesMap[K]>
): ToolPropertiesMap[K] => {
  const defaults = getDefaultForTool(tool) as ToolPropertiesMap[K];
  return {
    ...defaults,
    ...(existing ?? {}),
  } as ToolPropertiesMap[K];
};

/**
 * Create the store