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A build system for development of composable software.

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Develop. Preview. Ship.

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Fast, disk space efficient package manager

Quick Overview

Bit is an open-source project that enables developers to build, share, and reuse software components across projects and teams. It provides a decentralized approach to component management, allowing developers to easily create, publish, and consume reusable code snippets.

Pros

  • Decentralized Component Management: Bit allows developers to manage components independently, without the need for a centralized repository or build system.
  • Improved Code Reuse: By breaking down applications into smaller, reusable components, Bit facilitates code reuse and promotes modular software development.
  • Seamless Integration: Bit integrates with various development tools and workflows, making it easy to incorporate into existing projects.
  • Collaborative Development: Bit enables teams to collaborate on component development, fostering a shared codebase and promoting code consistency.

Cons

  • Learning Curve: Adopting Bit may require some initial investment in understanding its concepts and workflow, which can be a barrier for some developers.
  • Dependency Management: Managing dependencies between components can be complex, especially in larger projects with many interdependent components.
  • Adoption Challenges: Widespread adoption of Bit within an organization or the broader development community may be a challenge, as it requires a shift in development practices.
  • Limited Ecosystem: Compared to more established package managers or component platforms, the Bit ecosystem may have a smaller selection of available components.

Code Examples

Not applicable, as Bit is not a code library.

Getting Started

Not applicable, as Bit is not a code library.

Competitor Comparisons

12,708

The developer platform for on-demand cloud development environments to create software faster and more securely.

Pros of Gitpod

  • Provides a complete cloud-based development environment
  • Supports a wide range of programming languages and frameworks
  • Offers seamless integration with popular version control platforms

Cons of Gitpod

  • Requires an internet connection for development
  • May have limitations on resource usage in free tier
  • Learning curve for users new to cloud-based development environments

Code Comparison

Gitpod configuration (.gitpod.yml):

tasks:
  - init: npm install
    command: npm run dev
ports:
  - port: 3000
    onOpen: open-preview

Bit configuration (workspace.jsonc):

{
  "teambit.workspace/workspace": {
    "name": "my-workspace",
    "icon": "https://static.bit.dev/bit-logo.svg",
    "defaultDirectory": "{scope}/{name}",
    "defaultScope": "my-org.my-scope"
  }
}

While Gitpod focuses on providing a complete development environment, Bit emphasizes component-driven development and collaboration. Gitpod's configuration is centered around setting up the workspace and defining tasks, whereas Bit's configuration is more focused on organizing and managing components within a workspace.

12,635

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Pros of Vercel

  • Seamless deployment and hosting platform for static and serverless applications
  • Integrated with popular frontend frameworks like Next.js, React, and Vue.js
  • Automatic HTTPS and CDN configuration for improved performance and security

Cons of Vercel

  • Limited to specific frontend technologies and serverless functions
  • Less flexibility for complex backend architectures
  • Potential vendor lock-in for deployment and hosting

Code Comparison

Vercel configuration (vercel.json):

{
  "version": 2,
  "builds": [{ "src": "package.json", "use": "@vercel/next" }],
  "routes": [{ "src": "/(.*)", "dest": "/$1" }]
}

Bit configuration (workspace.jsonc):

{
  "teambit.workspace/workspace": {
    "name": "my-workspace",
    "icon": "https://static.bit.dev/bit-logo.svg",
    "defaultDirectory": "{scope}/{name}",
    "defaultScope": "my-org.my-scope"
  }
}

While Vercel focuses on deployment and hosting configuration, Bit emphasizes component management and collaboration. Vercel's configuration is tailored for serverless deployments, whereas Bit's configuration is centered around organizing and sharing components across projects and teams.

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A Git-based CMS for Static Site Generators

Pros of Decap CMS

  • Simpler setup and configuration for content management
  • Better suited for static site generators and JAMstack architectures
  • More user-friendly interface for non-technical content editors

Cons of Decap CMS

  • Limited to Git-based content management
  • Less flexibility for component-based development
  • Fewer options for code sharing and reusability across projects

Code Comparison

Decap CMS configuration (config.yml):

backend:
  name: git-gateway
  branch: main
collections:
  - name: "blog"
    label: "Blog"
    folder: "content/blog"
    create: true
    fields:
      - {label: "Title", name: "title", widget: "string"}
      - {label: "Body", name: "body", widget: "markdown"}

Bit component configuration (bit.json):

{
  "env": {
    "compiler": "bit.envs/compilers/react@0.0.14"
  },
  "dependencies": {
    "lodash": "^4.17.15"
  },
  "packageDependencies": {
    "react": "^16.8.6"
  }
}

Decap CMS focuses on content management and editing, while Bit emphasizes component-based development and code sharing. Decap CMS is more suitable for content-heavy websites, while Bit excels in modular development and code reuse across projects.

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Smart Monorepos ยท Fast CI

Pros of Nx

  • Offers a more comprehensive monorepo solution with built-in support for various frameworks and libraries
  • Provides powerful code generation and project scaffolding tools
  • Integrates well with popular CI/CD platforms and offers cloud-based caching for faster builds

Cons of Nx

  • Steeper learning curve due to its extensive feature set
  • May introduce more complexity for smaller projects or teams
  • Requires more configuration and setup compared to simpler alternatives

Code Comparison

Nx project configuration:

{
  "projects": {
    "my-app": {
      "root": "apps/my-app",
      "sourceRoot": "apps/my-app/src",
      "projectType": "application",
      "targets": {
        "build": {
          "executor": "@nrwl/web:build",
          "options": {
            "outputPath": "dist/apps/my-app",
            "index": "apps/my-app/src/index.html",
            "main": "apps/my-app/src/main.ts",
            "polyfills": "apps/my-app/src/polyfills.ts",
            "tsConfig": "apps/my-app/tsconfig.app.json"
          }
        }
      }
    }
  }
}

Bit component configuration:

{
  "name": "my-component",
  "entry": {
    "import": "src/index.ts"
  },
  "dependencies": {
    "react": "^17.0.2"
  },
  "packageJson": {
    "main": "dist/index.js",
    "types": "dist/index.d.ts"
  }
}
16,244

๐Ÿ“ฆ๐Ÿ” A lightweight Node.js private proxy registry

Pros of Verdaccio

  • Lightweight and easy to set up private npm registry
  • Supports proxy to public npm registry for missing packages
  • Can be used as a standalone CLI tool or integrated into existing systems

Cons of Verdaccio

  • Limited scalability for large-scale enterprise use
  • Fewer advanced features for component management and versioning
  • Less focus on component discoverability and collaboration

Code Comparison

Verdaccio configuration example:

storage: ./storage
auth:
  htpasswd:
    file: ./htpasswd
uplinks:
  npmjs:
    url: https://registry.npmjs.org/
packages:
  '@*/*':
    access: $all
    publish: $authenticated
    proxy: npmjs

Bit configuration example:

{
  "env": {
    "compiler": "bit.envs/compilers/react@0.0.14"
  },
  "dependencies": {
    "@bit/bit.envs.mocha": "0.0.5"
  },
  "componentsDefaultDirectory": "components/{name}",
  "packageManager": "npm"
}

Verdaccio focuses on package management and private registry functionality, while Bit emphasizes component-based development and versioning. Verdaccio is simpler to set up for basic use cases, but Bit offers more advanced features for managing and sharing components across projects.

29,125

Fast, disk space efficient package manager

Pros of pnpm

  • Faster and more efficient package management with a unique storage structure
  • Stricter dependency resolution, preventing phantom dependencies
  • Smaller disk space usage due to content-addressable storage

Cons of pnpm

  • Less focus on component-based development and sharing
  • Limited support for monorepo management compared to Bit
  • Steeper learning curve for developers used to npm or Yarn

Code Comparison

pnpm:

pnpm add react
pnpm run build
pnpm publish

Bit:

bit add src/components/button
bit tag button --message "initial version"
bit export user.collection

Key Differences

  • pnpm is primarily a package manager, while Bit focuses on component-based development
  • Bit offers more advanced features for sharing and versioning individual components
  • pnpm provides better performance and disk space efficiency for package management
  • Bit has a more comprehensive approach to monorepo management and component collaboration

Use Cases

  • Choose pnpm for efficient package management and faster builds in large projects
  • Opt for Bit when focusing on component-based development, sharing, and collaboration across teams

Community and Ecosystem

  • pnpm has gained popularity due to its performance benefits and is widely adopted
  • Bit has a growing community centered around component-driven development and design systems

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README

Website | Docs | Community | Bit Cloud

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Bit is a complete solution for building composable software. It simplifies the creation, maintenance and reuse of software using independent and reusable components.

You can use Bit components to build new projects or reuse components to modernize your existing applications. Here are few examples to components people build with Bit:

Bit supports all tooling in the JS ecosystem and comes out of the box with official dev environments for NodeJS, React, Angular, Vue, React Native, NextJS and far more. All are native to TypeScript and ESM and equipped with the best dev tooling.

Bit is a fit to every codebase structure. You can use Bit components in a monorepo, polyrepo, or even without repositories at all.

Getting started

Install Bit

Use the Bit installer to install Bit to be available on your PATH.

npx @teambit/bvm install

Initialize Bit on a new folder or in an existing project by running the following command:

bit init --default-scope my-org.my-project

Make sure to create your scope on the Bit platform and use the right org and project name. After running the command, Bit is initialized on the chosen directory, and ready to be used via Bit commands, your editor or the Bit UI!

Create components

Start creating components using the default component generators, or create your own.

bit templates

The following command uses the React UI component template to create a new reusable React component:

bit create react hello-world

You can find simple guides for creating NodeJS modules, UI components and apps, backend services and more on the Create Component docs. Run the Bit UI to preview components using the following command:

bit start 

Use bit run to preview applications during development. To create an application, follow the Create App docs section.

Use components

After creating a new component, start using it by adding an import statement in one of your workspace components.

import { Button } from '@org/scope-name.buttons.button';

Once added, Bit will autodetect the dependency between these components. Use bit show or the VSCode plugin to view the list of dependencies Bit detected for your components.

Release components

You can either use hosted scopes on Bit Cloud or by hosting scopes on your own. Use the following command to create your Bit Cloud account and your first scope.

bit login

Use semantic versioning to version your components:

bit tag --message "my first release" --major

By default, Bit uses Ripple CI to build components. You can use the --build flag to build the components on the local machine. To tag and export from your CI of choice to automate the release process or use our official CI scripts.

After versioning, you can proceed to release your components:

bit export

Head over to your bit.cloud account to see your components build progress. Once the build process is completed, the components will be available for use using standard package managers:

npm install @my-org/my-project.hello-world

Next steps

Contributors

Bit is entirely built with Bit and you can find all its components on Bit Cloud.

Your contribution, no matter how big or small, is much appreciated. Before contributing, please read the code of conduct.

See Contributing.

License

Apache License, Version 2.0

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