Go and npm packages: the path of exploration for cross-language development

The cross-language integration of Go and npm packages can be achieved through the cgo tool, which allows Go programs to call C code and then interact with SO files compiled into npm packages, providing Go developers with a way to utilize the functions of npm packages.

Go and npm packages: the path of exploration of cross-language development

In modern software development, cross-language development has become common case. By using the right tools, developers can easily bring together code written in different languages ​​to build flexible and powerful applications. This article will explore cross-language development of Go and npm packages.

Go

Go is an open source, high-performance programming language based on concurrency. Developed by Google, it is known for its readability, security, and high concurrency for building distributed and web applications.

npm

Node.js Package Manager (npm) is an open source package manager for publishing, downloading, and managing JavaScript modules. It makes it easy to integrate third-party libraries and tools into Node.js applications.

Cross-language integration

Cross-language integration of Go and npm packages can be achieved through the cgo tool, which allows Go programs to call C code. By compiling npm packages into shared object (SO) files, Go programs can consume them seamlessly.

Practical Case

Now, let us use a practical case to demonstrate the cross-language integration of Go and npm packages. We will use a Go program to call the bcrypt function in the npm package to encrypt the password.

First, we need to compile the bcrypt npm package:

npm install bcrypt --save
npm run build

This will generate an SO file in node_modules/bcrypt/lib/binding/bcrypt_lib.js.

Now, we can write code in Go to call the bcrypt function:

package main

/*
#cgo CFLAGS: -I/usr/local/include/node
#cgo LDFLAGS: -L/usr/local/lib -lbcrypt
#include <bcrypt.h>
*/
import "C"

func main() {
    password := "password"
    salt := []byte("salty")

    hashedPassword := C.BCrypt(
        C.CString(password),
        C.int(len(salt)),
        (*C.uchar)(&salt[0]),
        C.int(len(salt)),
        C.BCRYPT_VERSION,
    )

    println(C.GoString(hashedPassword))
}

Run

To run this program, execute the following command:

go build main.go
./main

Output

The program will output the encrypted password.

Conclusion

By using the cgo tool, Go developers can easily leverage features in npm packages, making cross-language development tasks easier. Be more simple and efficient. By combining the strengths of different languages, developers can build powerful applications that meet a variety of needs.

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