linshenkx/prompt-optimizer · warning · FavoriteTagAlreadyExistsError

TAG_ALREADY_EXISTS

TAG_ALREADY_EXISTS

Error message

${error.tag}

What it means

Main process returned TAG_ALREADY_EXISTS; converted to FavoriteTagAlreadyExistsError carrying the tag name. Creating a tag that already exists is rejected.

Source

Thrown at packages/core/src/services/favorite/electron-proxy.ts:73

      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);
      }
      // Fallback: preserve message as details for i18n-friendly error
      throw new FavoriteError(FAVORITE_ERROR_CODES.STORAGE_ERROR, error.message || 'Unknown error', {
        details: error.message || 'Unknown error',
      });

View on GitHub (pinned to 3e677b1d9f)

Solutions

1. Fetch existing tags and skip creation when the name matches
2. Catch FavoriteTagAlreadyExistsError and treat as success (idempotent create)
3. Trim/normalize tag names before comparing
4. Debounce duplicate create requests

Example fix

// before
await mgr.createTag(tag);
// after
try { await mgr.createTag(tag); }
catch (e) { if (!(e instanceof FavoriteTagAlreadyExistsError)) throw e; }

const tags = new Set((await mgr.getTags?.() ?? []).map(t => t.name));
if (!tags.has(tag)) await mgr.createTag(tag);

const isTagAlreadyExists = (e: unknown): e is FavoriteTagAlreadyExistsError => e instanceof FavoriteTagAlreadyExistsError;

try { await mgr.createTag(tag); } catch (e) { if (isTagAlreadyExists(e)) return; throw e; }

When it happens

Trigger: createTag/addTags with a tag name already present in the tag store, via the Electron proxy.

Common situations: Concurrent tag creation from two windows; import containing existing tags; UI not deduping user input against the current tag list.

Related errors

• FAVORITE_ALREADY_EXISTS
• Tag not found: ${error.tag || ''}
• TAG_ERROR
• FAVORITE_NOT_FOUND
• CATEGORY_NOT_FOUND

AI-assisted analysis of linshenkx/prompt-optimizer@3e677b1d9f (2026-08-27). Data as JSON: /api/errors/84dba727fe79c50c. Report an issue: GitHub.