Function createDepsOptimizer

packages/vite/src/bridge/optimizer.ts:55–80

(config: ResolvedConfig)

// https://github.com/vitejs/vite/blob/b7ddfae5f852c2948fab03e94751ce56f5f31ce0/packages/vite/src/node/optimizer/optimizer.ts#L79
function createDepsOptimizer(config: ResolvedConfig) {
    const depsCacheDirPrefix = normalizePath(path.resolve(config.cacheDir, 'deps'));

    const metadata = parseDepsOptimizerMetadata(
        fs.readFileSync(path.join(depsCacheDirPrefix, METADATA_FILENAME), 'utf8'),
        depsCacheDirPrefix
    )!;

    const notImplemented = () => {
        throw new Error('not implemented');
    };
    const depsOptimizer: DepsOptimizer = {
        async init() {},
        metadata,
        registerMissingImport: notImplemented,
        run: notImplemented,
        // https://github.com/vitejs/vite/blob/b7ddfae5f852c2948fab03e94751ce56f5f31ce0/packages/vite/src/node/optimizer/index.ts#L916
        isOptimizedDepFile: id => id.startsWith(depsCacheDirPrefix),
        isOptimizedDepUrl: notImplemented,
        getOptimizedDepId: notImplemented,
        close: notImplemented,
        options: {}
    };

    return depsOptimizer;
}

// https://github.com/vitejs/vite/blob/b7ddfae5f852c2948fab03e94751ce56f5f31ce0/packages/vite/src/node/optimizer/index.ts#L944
function parseDepsOptimizerMetadata(jsonMetadata: string, depsCacheDir: string): DepOptimizationMetadata | undefined {