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npm info命令与npm view命令有何区别？

在当今的软件开发领域，npm（Node Package Manager）已经成为前端和后端开发不可或缺的工具之一。它提供了丰富的库和框架，帮助开发者提高工作效率。在npm的众多命令中，npm info 和 npm view 是两个常用的命令，它们在获取包信息方面有着各自的特点和用途。本文将深入探讨这两个命令的区别，帮助开发者更好地利用npm。

npm info命令：

npm info 命令主要用于查看特定npm包的详细信息。当你在命令行中输入 npm info [package-name]，npm会返回该包的名称、版本、描述、关键词、主页、仓库、许可证、依赖等信息。

案例：

假设你想了解express这个包的详细信息，你可以使用以下命令：

npm info express

执行后，你会得到类似以下的信息：

name: express

version: 4.17.1

description: Fast, unopinionated, minimalist web framework for Node.js

main: index.js

module: index.js

bin: 

  express: bin/express

scripts: 

  test: echo "no test specified" 

keywords: web, framework, express, server, node, application, api

homepage: https://expressjs.com/

bugs: https://github.com/expressjs/express/issues

license: MIT

readme: https://github.com/expressjs/express/blob/master/README.md

dependencies: 

  body-parser: ^1.19.0

  cookie-parser: ^1.4.4

  compress: ^1.7.4

  connect: ^3.7.4

  cookie-session: ^1.4.0

  debug: ^4.1.1

  dot-prop: ^4.2.1

  emissions: ^1.0.0

  engage: ^1.0.0

  escape-html: ^1.0.3

  express-serve-static-core: ^4.0.2

  finalhandler: ^1.4.3

  formidable: ^1.2.2

  fs: ^0.0.1-security

  merge-describe: ^1.1.0

  method-override: ^3.2.0

  ms: ^2.1.2

  negotiate: ^1.0.0

  parseurl: ^1.2.4

  path-to-regexp: ^1.7.0

  proxy-addr: ^2.0.7

  range-parser: ^1.2.0

  send: ^0.17.1

  serve-static: ^1.14.1

  cookie: ^0.4.0

  qs: ^6.10.0

  safe-buffer: ^5.1.2

  type-is: ^1.6.16

  vary: ^1.1.0

  view-engine: ^1.1.0

  view-logger: ^1.0.0

  view-rewrite: ^1.0.0

  view-source: ^1.1.0

  view-stdin: ^1.0.0

  view-template: ^1.0.0

  view-test: ^1.0.0

  view-tools: ^1.0.0

  view-validate: ^1.0.0

  view-views: ^1.0.0

  view-widgets: ^1.0.0

  view-xframe: ^1.0.0

  view-yield: ^1.0.0

  view-zlib: ^1.0.0

devDependencies: 

  @types/body-parser: ^1.19.0

  @types/cookie-parser: ^1.4.4

  @types/compress: ^1.7.4

  @types/connect: ^3.7.4

  @types/cookie-session: ^1.4.0

  @types/debug: ^4.1.1

  @types/dot-prop: ^4.2.1

  @types/express: ^4.17.1

  @types/express-serve-static-core: ^4.0.2

  @types/finalhandler: ^1.4.3

  @types/formidable: ^1.2.2

  @types/fs: ^0.0.1-security

  @types/merge-describe: ^1.1.0

  @types/method-override: ^3.2.0

  @types/ms: ^2.1.2

  @types/negotiate: ^1.0.0

  @types/parseurl: ^1.2.4

  @types/path-to-regexp: ^1.7.0

  @types/proxy-addr: ^2.0.7

  @types/range-parser: ^1.2.0

  @types/send: ^0.17.1

  @types/serve-static: ^1.14.1

  @types/qs: ^6.10.0

  @types/safe-buffer: ^5.1.2

  @types/type-is: ^1.6.16

  @types/vary: ^1.1.0

  @types/view-engine: ^1.1.0

  @types/view-logger: ^1.0.0

  @types/view-rewrite: ^1.0.0

  @types/view-source: ^1.1.0

  @types/view-stdin: ^1.0.0

  @types/view-template: ^1.0.0

  @types/view-test: ^1.0.0

  @types/view-tools: ^1.0.0

  @types/view-validate: ^1.0.0

  @types/view-views: ^1.0.0

  @types/view-widgets: ^1.0.0

  @types/view-xframe: ^1.0.0

  @types/view-yield: ^1.0.0

  @types/view-zlib: ^1.0.0

  @types/express-serve-static-core: ^4.0.2

  @types/finalhandler: ^1.4.3

  @types/formidable: ^1.2.2

  @types/fs: ^0.0.1-security

  @types/merge-describe: ^1.1.0

  @types/method-override: ^3.2.0

  @types/ms: ^2.1.2

  @types/negotiate: ^1.0.0

  @types/parseurl: ^1.2.4

  @types/path-to-regexp: ^1.7.0

  @types/proxy-addr: ^2.0.7

  @types/range-parser: ^1.2.0

  @types/send: ^0.17.1

  @types/serve-static: ^1.14.1

  @types/qs: ^6.10.0

  @types/safe-buffer: ^5.1.2

  @types/type-is: ^1.6.16

  @types/vary: ^1.1.0

  @types/view-engine: ^1.1.0

  @types/view-logger: ^1.0.0

  @types/view-rewrite: ^1.0.0

  @types/view-source: ^1.1.0

  @types/view-stdin: ^1.0.0

  @types/view-template: ^1.0.0

  @types/view-test: ^1.0.0

  @types/view-tools: ^1.0.0

  @types/view-validate: ^1.0.0

  @types/view-views: ^1.0.0

  @types/view-widgets: ^1.0.0

  @types/view-xframe: ^1.0.0

  @types/view-yield: ^1.0.0

  @types/view-zlib: ^1.0.0

peerDependencies: 

  @types/node: ^12.0.0

optionalDependencies: 

  @types/node: ^12.0.0

bundledDependencies: 

  body-parser: ^1.19.0

  cookie-parser: ^1.4.4

  compress: ^1.7.4

  connect: ^3.7.4

  cookie-session: ^1.4.0

  debug: ^4.1.1

  dot-prop: ^4.2.1

  emissions: ^1.0.0

  engage: ^1.0.0

  escape-html: ^1.0.3

  express-serve-static-core: ^4.0.2

  finalhandler: ^1.4.3

  formidable: ^1.2.2

  fs: ^0.0.1-security

  merge-describe: ^1.1.0

  method-override: ^3.2.0

  ms: ^2.1.2

  negotiate: ^1.0.0

  parseurl: ^1.2.4

  path-to-regexp: ^1.7.0

  proxy-addr: ^2.0.7

  range-parser: ^1.2.0

  send: ^0.17.1

  serve-static: ^1.14.1

  cookie: ^0.4.0

  qs: ^6.10.0

  safe-buffer: ^5.1.2

  type-is: ^1.6.16

  vary: ^1.1.0

  view-engine: ^1.1.0

  view-logger: ^1.0.0

  view-rewrite: ^1.0.0

  view-source: ^1.1.0

  view-stdin: ^1.0.0

  view-template: ^1.0.0

  view-test: ^1.0.0

  view-tools: ^1.0.0

  view-validate: ^1.0.0

  view-views: ^1.0.0

  view-widgets: ^1.0.0

  view-xframe: ^1.0.0

  view-yield: ^1.0.0

  view-zlib: ^1.0.0

npm view命令：

npm view 命令同样用于查看npm包的信息，但它提供的信息更加丰富，包括版本列表、依赖关系、包的源代码、文档等。

案例：

如果你想查看express包的版本列表，可以使用以下命令：

npm view express versions

执行后，你会得到类似以下的信息：

[ '1.0.0', '1.0.1', '1.0.2', '1.0.3', '1.0.4', '1.0.5', '1.0.6', '1.0.7', '1.0.8', '1.0.9', '1.0.10', '1.0.11', '1.0.12', '1.0.13', '1.0.14', '1.0.15', '1.0.16', '1.0.17', '1.0.18', '1.0.19', '1.0.20', '1.0.21', '1.0.22', '1.0.23', '1.0.24', '1.0.25', '1.0.26', '1.0.27', '1.0.28', '1.0.29', '1.0.30', '1.0.31', '1.0.32', '1.0.33', '1.0.34', '1.0.35', '1.0.36', '1.0.37', '1.0.38', '1.0.39', '1.0.40', '1.0.41', '1.0.42', '1.0.43', '1.0.44', '1.0.45', '1.0.46', '1.0.47', '1.0.48', '1.0.49', '1.0.50', '1.0.51', '1.0.52', '1.0.53', '1.0.54', '1.0.55', '1.0.56', '1.0.57', '1.0.58', '1.0.59', '1.0.60', '1.0.61', '1.0.62', '1.0.63', '1.0.64', '1.0.65', '1.0.66', '1.0.67', '1.0.68', '1.0.69', '1.0.70', '1.0.71', '1.0.72', '1.0.73', '1.0.74', '1.0.75', '1.0.76', '1.0.77', '1.0.78', '1.0.79', '1.0.80', '1.0.81', '1.0.82', '1.0.83', '1.0.84', '1.0.85', '1.0.86', '1.0.87', '1.0.88', '1.0.89', '1.0.90', '1