{"id":15883,"library":"ultrabundle","title":"UltraBundle","description":"UltraBundle is an efficient and aggressive JavaScript/TypeScript bundler built upon Rollup, designed for projects requiring optimized output with minimal configuration. Currently at version 1.0.2, it appears to be under active development, though a specific release cadence is not explicitly stated. Its key differentiators include first-class TypeScript support, a comprehensive suite of out-of-the-box optimizations, and a straightforward single JSON file (`bundles.json`) configuration approach. Unlike more complex bundlers, it aims to simplify the bundling process by abstracting away much of the underlying Rollup configuration, providing presets for development, watching, and production builds with optimizations. This tool is intended for bundling application code, not libraries.","status":"active","version":"1.0.2","language":"javascript","source_language":"en","source_url":"https://github.com/ConsoleTVs/UltraBundle","tags":["javascript","typescript"],"install":[{"cmd":"npm install ultrabundle","lang":"bash","label":"npm"},{"cmd":"yarn add ultrabundle","lang":"bash","label":"yarn"},{"cmd":"pnpm add ultrabundle","lang":"bash","label":"pnpm"}],"dependencies":[],"imports":[{"note":"UltraBundle is a CLI tool and not imported into JavaScript/TypeScript files. Its primary usage is via `package.json` scripts.","wrong":"import { ultrabundle } from 'ultrabundle'","symbol":"ultrabundle CLI (Development)","correct":"\"dev\": \"ultrabundle\""},{"note":"Commands are executed directly as npm scripts or via `npx` for watch mode, which enables file watching.","wrong":"require('ultrabundle').watch()","symbol":"ultrabundle CLI (Watch Mode)","correct":"\"watch\": \"ultrabundle --watch\""},{"note":"For production builds, the `--optimize` flag triggers additional optimizations. The configuration is handled through `bundles.json`, not programmatic API.","wrong":"ultrabundle.optimize({ ... })","symbol":"ultrabundle CLI (Production Optimize)","correct":"\"prod\": \"ultrabundle --optimize\""}],"quickstart":{"code":"{\n  \"name\": \"my-app\",\n  \"version\": \"1.0.0\",\n  \"description\": \"My UltraBundled application\",\n  \"main\": \"dist/output.js\",\n  \"scripts\": {\n    \"dev\": \"ultrabundle\",\n    \"watch\": \"ultrabundle --watch\",\n    \"prod\": \"ultrabundle --optimize\"\n  },\n  \"devDependencies\": {\n    \"ultrabundle\": \"^1.0.0\"\n  }\n}\n// -- In bundles.json --\n[\n  {\n    \"input\": \"src/index.ts\",\n    \"output\": \"dist/output.js\"\n  }\n]\n// -- In src/index.ts --\nconsole.log(\"Hello from UltraBundle!\");\n\n// To run:\n// 1. npm install\n// 2. npm run dev (for development build)\n// 3. npm run watch (for continuous watching and rebuilding)\n// 4. npm run prod (for optimized production build)","lang":"typescript","description":"Demonstrates the typical setup for UltraBundle, including `package.json` scripts and the required `bundles.json` configuration file, showing a basic TypeScript input and JavaScript output."},"warnings":[{"fix":"Always check the official documentation or release notes for schema updates when upgrading to a new major version. Consider pinning to a specific major version to avoid unexpected build failures.","message":"As a relatively new project (v1.0.2), UltraBundle's configuration schema (`bundles.json`) or CLI options might undergo breaking changes in future major versions. Users should review release notes carefully when upgrading to new major versions.","severity":"breaking","affected_versions":">=1.0.0"},{"fix":"If encountering unexpected runtime errors or missing functionality, examine the bundled output. Look for `sideEffects: false` in `package.json` of affected libraries or use `/* #__PURE__ */` annotations for functions with side effects. Consult Rollup documentation for advanced `treeshake` options if UltraBundle exposes them or if a custom Rollup config can be injected.","message":"UltraBundle's 'aggressive' optimizations, powered by Rollup, may unexpectedly remove code or side effects that are crucial for certain libraries or frameworks. This is common with strict tree-shaking.","severity":"gotcha","affected_versions":">=1.0.0"},{"fix":"Ensure `bundles.json` exists in the same directory as `package.json` and follows the specified JSON array format. Verify all `input` and `output` paths are correct and accessible.","message":"UltraBundle relies on a `bundles.json` file in the project root. If this file is missing, malformed, or located elsewhere, the bundling process will fail or produce an empty output.","severity":"gotcha","affected_versions":">=1.0.0"},{"fix":"Ensure your project's `tsconfig.json` is correctly set up for your project, especially `target` and `module` options. Update TypeScript to a compatible version with UltraBundle and Rollup's underlying TS transformer. Check UltraBundle's GitHub issues for reported TS compatibility problems.","message":"While UltraBundle ships with TypeScript support, misconfigured `tsconfig.json` or incompatible TypeScript versions can lead to compilation errors during bundling.","severity":"gotcha","affected_versions":">=1.0.0"}],"env_vars":null,"last_verified":"2026-04-21T00:00:00.000Z","next_check":"2026-07-20T00:00:00.000Z","problems":[{"fix":"Create a `bundles.json` file in your project's root directory, ensuring it contains a valid JSON array of bundle configurations.","cause":"The `bundles.json` configuration file is missing or not located in the project's root directory (where `package.json` resides).","error":"Error: No bundles.json file found in the root directory."},{"fix":"Double-check import paths in your source code. Ensure all dependencies are correctly installed (`npm install`). Verify `tsconfig.json`'s `compilerOptions.paths` and `compilerOptions.baseUrl` are set up correctly if using path aliases.","cause":"A module import path could not be resolved by the bundler, typically due to incorrect relative paths, missing `node_modules` installations, or incorrect `baseUrl`/`paths` configuration in `tsconfig.json`.","error":"Error: Could not resolve 'path/to/module' from 'path/to/source.ts'"},{"fix":"Review your `bundles.json` configuration for any typos or invalid properties. Try a simpler configuration first to isolate the problem. Check for recent changes in UltraBundle or Rollup that might affect your setup. Temporarily disable `--optimize` to see if the issue is related to aggressive optimizations.","cause":"This generic error often indicates an issue within the Rollup configuration or a plugin, potentially caused by an invalid or unexpected input, or a problem with a specific optimization pass.","error":"TypeError: Cannot read properties of undefined (reading 'value') during build."}],"ecosystem":"npm"}