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Npm gains a lot from its large community, and the activity from node.js gives npm the largest set of active repositories. Since so many people already use npm, chances are the library you need has already been added to npm, and many new authors are writing their libraries with npm in mind. See More
Browserify's documentation assumes that you have some familiarity with Node before starting to work with it. Some methods are not explained very thoroughly and others are assumed to be already known by the developer. For example, Node's module.exports is not explained, it's just mentioned that browserify modules can be exported using it. Which is fine, but for a developer not used with Node, or a front-end engineer that has never used Node it can be confusing. See More
Browserify shim is a transformation extension for Browserify that lets you load in libraries that do not follow the Common JS structure (using an exports module). This allows you to explicitly define what globally defined variables should be exposed by a require statement so you can control how you load in these poorly formatted libraries safely without polluting the global scope. Because the Common JS style loads in required libraries within a closure, any variables defined in a library will not pollute the global scope. Browserify shim lets you define which variables defined within that closure to map to the exports variable that Common JS expects in a safe and explicit way through declarations in your project's package.json file. See More
npm dedupe lets you flatten the dependency tree. Npm has a very handy dedupe tool. What this tool does is that it checks the dependency tree to find modules that depend on third dependencies. If a suitable version for all modules exists, it keeps that version and deletes any other versions that are not needed. For example, in this dependency graph: a +-- b <-- depends on email@example.com | -- firstname.lastname@example.org -- d <-- depends on c@~1.0.9 -- email@example.com dedupe will transform it to: a +-- b +-- d -- firstname.lastname@example.org What it did was to make sure that both b and d got their dependency met by a single c module. It then deleted all the unneeded versions of the c module. See More
Even though it's still in its early stages of development, security is one of the core values on which Yarn is built. It uses checksums to verify the integrity of every package before executing its code. This also helps avoiding errors related to faulty caching or captive portals. Further steps are also being taken to improve the security of Yarn which will be implemented in the future. See More
Even though it's backed by Facebook, Yarn is built as a community project first and foremost. It's completely open source and hosted on Github. It's released under a standard open source client and has its own GitHub organization and set up to work under the same governance model that other successful projects have used in the past, such as Rust and Ember. All of this means that both existing and new contributors will always work together to improve the product and introduce new features while also keeping in mind suggestions coming from the community. See More
One of the most important aspects of Yarn is determinism (predictability). The lock file ensures that the same dependencies will always be installed in the same way and order regardless of the machine for a given repository. See More
Bower doesn't try to handle too much of the workflow process, which means it's more flexible, and can be incorporated into more workflows. It tries to just do package management well and nothing else, which is why so many workflow wrappers support it. Because it doesn't try to do too much vertical integration, it also means that the list of supported components that it manages is huge. See More
No need for gulp/grunt or otherwise to transpile and/or bundle modules. Modules are loaded in the browser in development. You can optionally bundle when deploying to production. Frictionless process of module loading. Though this is really the SystemJS side of the equation, jspm is the package manager that's SystemJS aware. See More
As for common modules shared by multiple pages, duo.js cannot extract and put them into another bundle which is loaded commonly. On the other hand, modules modified rarely should put into another bundle so they can be still cached when other modules change. See More
Ender is another attempt at hijacking and using npm for downloading browser dependencies. But in doing so, it's using a registry and module specifications not made for the browser. This means that there will have to be some extra work to get them to work properly. See More
Ender encourages the use of smaller modules through a jQuery like object. Smaller projects benefit from being developed in parallel which can lead to faster release cycles for a single component, compared to a monolithic project like jQuery. You can also find more diverse functionality by using smaller projects. By just using the components you need leads to a smaller file size and faster load speed. It also allows you to be more opinionated about which components you want to use, so you don't have to use an API you don't agree with just because it needs to provide backwards compatibility. See More
As opposed to Browserify, Ender has the package management portion and bundler as one. Browserify is only a bundler, meaning you need to manage packages with npm as well. Using npm is good if you have frontend and backend dependencies, as you need to use npm for the backend anyway, but not as nice if you only need to create a package for the frontend. See More
Component provides you with a flat dependency tree. This results in easy dependency management. A flat dependency tree is important for file size optimization, so you don't end up loading multiple copies of the same library, or deeply nested dependencies that bloat up. See More
Components are encouraged by convention to be small and single-use, meaning that the packages in the community's ecosystem are easier to use and combine together. More complex components use dependency resolution to compose smaller components so that components stay limited in scope. See More
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