linshenkx/prompt-optimizer · warning · FavoriteValidationError

CATEGORY_ALREADY_EXISTS

CATEGORY_ALREADY_EXISTS

Error message

${error.message} || 'Category already exists'

What it means

Legacy error path: main process returned CATEGORY_ALREADY_EXISTS, converted to FavoriteValidationError (legacy mapping, newer code uses a dedicated category-exists error). Thrown when creating a category whose name/identity already exists.

Source

Thrown at packages/core/src/services/favorite/electron-proxy.ts:69

      // 将IPC错误转换为具体的错误类型
      if (error.code === 'FAVORITE_NOT_FOUND') {
        throw new FavoriteNotFoundError(error.id || '');
      }
      if (error.code === 'FAVORITE_ALREADY_EXISTS') {
        throw new FavoriteAlreadyExistsError(error.content || '');
      }
      if (error.code === 'CATEGORY_NOT_FOUND') {
        throw new FavoriteCategoryNotFoundError(error.id || '');
      }
      if (error.code === 'VALIDATION_ERROR') {
        throw new FavoriteValidationError(error.message || '');
      }
      if (error.code === 'STORAGE_ERROR') {
        throw new FavoriteStorageError(error.message || '');
      }
      // Legacy: category already exists
      if (error.code === 'CATEGORY_ALREADY_EXISTS') {
        throw new FavoriteValidationError(error.message || 'Category already exists')
      }
      // 标签相关错误
      if (error.code === 'TAG_ALREADY_EXISTS') {
        throw new FavoriteTagAlreadyExistsError(error.tag || '');
      }
      if (error.code === 'TAG_NOT_FOUND') {
        throw new FavoriteTagNotFoundError(error.tag || '');
      }
      if (error.code === 'TAG_ERROR') {
        throw new FavoriteTagError(FAVORITE_ERROR_CODES.TAG_ERROR, error.message || '', { details: error.message || '' });
      }
      // 数据迁移和导入导出错误
      if (error.code === 'MIGRATION_ERROR') {
        throw new FavoriteMigrationError(error.message || '', error.cause);
      }
      if (error.code === 'IMPORT_EXPORT_ERROR') {
        throw new FavoriteImportExportError(error.message || '', error.cause, error.details);
      }

View on GitHub (pinned to 3e677b1d9f)

Solutions

1. Check existing category names before creating (case-insensitively if appropriate)
2. Disable the submit button while the request is pending
3. Catch FavoriteValidationError for category creation and check for 'already exists' messaging
4. Upgrade main+renderer together so the non-legacy error code is used

Example fix

// before
await mgr.createCategory(name);
// after
const exists = (await mgr.getCategories()).some(c => c.name === name);
if (!exists) await mgr.createCategory(name);

const names = new Set((await mgr.getCategories()).map(c => c.name.toLowerCase()));
if (!names.has(name.toLowerCase())) await mgr.createCategory(name);

const isLegacyCategoryExists = (e: unknown) =>
  e instanceof FavoriteValidationError && /already exists/i.test(e.message);

try { await mgr.createCategory(name); } catch (e) { if (isLegacyCategoryExists(e)) return; throw e; }

When it happens

Trigger: createCategory with a name that already exists, via the Electron proxy talking to an older main-process version.

Common situations: Double-submit of the create-category form; version skew between proxy and main (older main still emits CATEGORY_ALREADY_EXISTS); user retyping an existing category name.

Related errors

• FAVORITE_ALREADY_EXISTS
• CATEGORY_NOT_FOUND
• TAG_ALREADY_EXISTS
• Category already exists: ${category.name}
• FAVORITE_NOT_FOUND

AI-assisted analysis of linshenkx/prompt-optimizer@3e677b1d9f (2026-08-27). Data as JSON: /api/errors/ffeda7110894ca41. Report an issue: GitHub.