How I Analyzed All NPM Dependency Licenses in One Go

Using license-checker to find NPM dependency licenses

Thanks to NPM and the open-source community, developers can use plenty of external libraries for JavaScript development. But that doesn’t give us the freedom to use anything without considering their copyrights.

So, we should be aware of licensing models of the libraries we use. This article will show you a way to do a quick audit on your NPM dependencies using the  license-checker NPM package.

Manual Method

As you already know, all NPM packages have their own licenses, and you can find these licenses inside the package itself in the node_modules directory.

When you go inside node_modules, there is a file named LICENSE in each package that includes the license details.If a LICENSE file is not found, the license should probably be mentioned inside the README file. These licenses explicitly mention the terms and conditions of the package.

The package.json file inside each package also has a property called license, where the value is the type of the license.

LICENSE file inside the express module

#mit #npm #licensing #node

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How I Analyzed All NPM Dependency Licenses in One Go

How I Analyzed All NPM Dependency Licenses in One Go

Using license-checker to find NPM dependency licenses

Thanks to NPM and the open-source community, developers can use plenty of external libraries for JavaScript development. But that doesn’t give us the freedom to use anything without considering their copyrights.

So, we should be aware of licensing models of the libraries we use. This article will show you a way to do a quick audit on your NPM dependencies using the  license-checker NPM package.

Manual Method

As you already know, all NPM packages have their own licenses, and you can find these licenses inside the package itself in the node_modules directory.

When you go inside node_modules, there is a file named LICENSE in each package that includes the license details.If a LICENSE file is not found, the license should probably be mentioned inside the README file. These licenses explicitly mention the terms and conditions of the package.

The package.json file inside each package also has a property called license, where the value is the type of the license.

LICENSE file inside the express module

#mit #npm #licensing #node

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Fannie Zemlak

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What's new in the go 1.15

Go announced Go 1.15 version on 11 Aug 2020. Highlighted updates and features include Substantial improvements to the Go linker, Improved allocation for small objects at high core counts, X.509 CommonName deprecation, GOPROXY supports skipping proxies that return errors, New embedded tzdata package, Several Core Library improvements and more.

As Go promise for maintaining backward compatibility. After upgrading to the latest Go 1.15 version, almost all existing Golang applications or programs continue to compile and run as older Golang version.

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NPM Install and NPM CI: In What Aspect They Differ

Nodejs web development has achieved such a huge acclamation all over the world just because of its large ecosystem of libraries known as NPM modules. It is the largest software package library in the world, with over 500,000+ packages. Each time a Command Line Interface (CLI) for npm comes as an add-on with Nodejs installation which allows developers to connect with packages locally on their machine.

The idea of npm modules had come with some technical advancement in package management like reusable components, with easy installation via an online repository, with version and dependency management.

In general,NPM is a default package manager for every Nodejs development project. Npm eases the installing and updating dependencies processes. A dependency list on npmjs even provides you with the installation command, so that you can simply copy and paste in the terminal to initiate installation procedures.

All npm users have an advantage of a new install command called “npm ci(i.e. npm continuous integration)”. These commands provide enormous improvements to both the performance and reliability of default builds for continuous integration processes. In turn, it enables a consistent and fast experience for developers using continuous integration in their workflow.

In npm install, it reads the package.json to generate a list of dependencies and uses package-lock.json to know the exact version of these dependencies to install. If the dependency is found in package-lock.jso, it will be added by npm install.

Whereas here, the npm ci (continuous integration) installs dependencies from package-lock.json directly and use up package.json just to verify that there are no mismatched versions exists. If any dependencies mismatching versions, it will show an error.

#npm-install #npm-ci #npm #node-package-manager

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When an Interface Depends on Another Interface in Go

Interfaces are the way for you to describe abstract behaviour, but what makes Go Interfaces so great? Well, it’s probably the first thing you learn about them, that they are implemented implicitly. You don’t need to explicitly specify about a type which interface it implements. This makes dependancy injection super easy in Go, leaving your code decoupled. You are defining the behaviour you need, and not what you do. Your type could implement more and more interfaces, without ever changing your code!

But when an interface depends on another one, you encounter a type dependancy, and not a behaviour one. In this post we’ll try to see why and how to handle this case.

When an interface is just a type.

So for a type to implement an interface, it must have all the interface’s methods. This means the methods’ names and signatures. Each method must take and return the exactly same type parameters. This strictness stays even if that parameter type is an interface.

Example

Imagine we have an application for running jobs. We want to separate the implementation of the job and the way the job runs.

For doing the job we will define a Worker interface, and for running the job we will define a Runner interface. Then we will compose these two interfaces in a separated package called runner :

package runner

	type Worker interface {
	  Do()
	}

	type Runner interface {
	  Run(Worker)
	}

	func Run(r Runner, w Worker) {
	  r.Run(w)
	}

So the package runner doesn’t do much except exporting a function for running a Worker. It doesn’t know anything about what the job is and how does it run.

#go #dependencies #golang #interfaces