Dart pub vs npm

Dart pub is Dart’s package manager for finding and managing shared libraries and tools. It resolves dependency versions compatible with one another and the installed Dart SDK, and records selected versions in a lockfile so application teams can keep dependency versions consistent. Packages may come from pub.dev, other hosted repositories, Git repositories, local paths, or supported SDKs. Developers can use pub through the dart or Flutter command-line tools, and most Dart-savvy IDEs support package workflows. The `dart pub publish` command uploads packages to pub.dev. Before publishing, pub checks for possible secret leaks using limited patterns and may warn or refuse publication; packages published to pub.dev cannot have Git or local path dependencies in their pubspec. Security advisories draw on the GitHub Advisory Database for Dart and Flutter packages. Pub can often resolve dependencies offline from its shared cache. It supports Windows, Linux, and macOS, and is free and open source.

npm is a JavaScript package registry and command-line tool for sharing code and managing packages. The Registry and CLI are free for public package use, and the Free plan lets public package authors publish unlimited public packages. npm accepts package.json folders, gzipped tarballs, URLs, name-and-version or name-and-tag references, and Git URLs. Its tools support dependency resolution, lockfiles, workspaces, private registry authentication, and offline installation. It runs on Linux, macOS, Windows, and other operating systems through Node.js installers or version managers. For private packages, the Paid user account plan is $7 a month; Pro is also $7 a month for individual creators, while Teams is $7 per user per month for teams and organizations. Pro includes unlimited private packages and package-based permissions; Teams adds team-based permissions. Organizations can manage members, teams, roles, permissions, and package access. All plans include basic support and automatic security warnings. Paid billing starts when card details are submitted, with the first month charged immediately.