什么是“package.json”文件？

Question

As a new developer I'd like more information about JSON files. I know that this file is the heart of a Node.js system. This file holds the metadata for a particular project. The file is found in the root directory of any Node.js application or module. What is some more information about it?

Answer 1

The package.json file is the essential part to understand, learn and work with Node.js. It is the first step to learning about development in Node.js.

The metadata information in the package.json file can be categorized into the below categories:

1. It basically consists of the properties to identify the module/project such as the name of the project, current version of the module, license, author of the project, description of the project, etc.

2. As the name suggests, it consists of the functional values/properties of the project/module such as the entry/starting point of the module, dependencies in the project, scripts being used, repository links of the Node project, etc.

Answer 2

The package. json file is the heart of any Node project. It records important metadata about a project which is required before publishing to NPM, and also defines functional attributes of a project that npm uses to install dependencies, run scripts, and identify the entry point to our package.

Answer 3

All npm packages contain a file, usually in the project root, called package.json - this file holds various metadata relevant to the project. This file is used to give information to npm that allows it to identify the project as well as handle the project's dependencies. It can also contain other metadata such as a project description, the version of the project in a particular distribution, license information, even configuration data - all of which can be vital to both npm and to the end users of the package. The package.json file is normally located at the root directory of a Node.js project.