Method loadKeywordIndex

src/core/search.ts:173–219

()

  }

  private async loadKeywordIndex(): Promise<void> {
    try {
      const indexPath = path.join(this.rootPath, CODEBASE_CONTEXT_DIRNAME, KEYWORD_INDEX_FILENAME);
      const content = await fs.readFile(indexPath, 'utf-8');
      const parsed = JSON.parse(content) as unknown;

      if (Array.isArray(parsed)) {
        throw new IndexCorruptedError(
          'Legacy keyword index format detected (missing header). Rebuild required.'
        );
      }

      const parsedObj = parsed as { chunks?: unknown };
      const chunks =
        parsedObj && typeof parsedObj === 'object' && Array.isArray(parsedObj.chunks)
          ? (parsedObj.chunks as CodeChunk[])
          : null;
      if (!chunks) {
        throw new IndexCorruptedError('Keyword index corrupted: expected { header, chunks }');
      }

      this.chunks = chunks;

      this.fuseIndex = new Fuse(this.chunks, {
        keys: [
          { name: 'content', weight: 0.4 },
          { name: 'metadata.componentName', weight: 0.25 },
          { name: 'filePath', weight: 0.15 },
          { name: 'relativePath', weight: 0.15 },
          { name: 'componentType', weight: 0.15 },
          { name: 'layer', weight: 0.1 },
          { name: 'tags', weight: 0.15 }
        ],
        includeScore: true,
        threshold: 0.4,
        useExtendedSearch: true,
        ignoreLocation: true
      });
    } catch (error) {
      if (error instanceof IndexCorruptedError) {
        throw error;
      }
      throw new IndexCorruptedError(
        `Keyword index load failed (rebuild required): ${error instanceof Error ? error.message : String(error)}`
      );
    }
  }

  /**
   * Load pattern intelligence for trend detection and warnings