bgoonz · bgoonz · Apr 29, 2022 · Apr 28, 2022
diff --git a/src/pages/blog/about-npm-packages.md b/src/pages/blog/about-npm-packages.md
@@ -0,0 +1,78 @@
+---
+title: About NPM Packages
+template: post
+subtitle: The npm registry contains packages, many of which are also Node
+  modules, or contain Node modules. Read on to understand how they differ and
+  how they interact.
+excerpt: The npm registry contains packages, many of which are also Node
+  modules, or contain Node modules. Read on to understand how they differ and
+  how they interact.
+date: 2022-04-28T23:46:22.494Z
+image: 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m5RD77V728ry34md61Pqfib/Ay9SfWvAQlMeUpKYSvOJG2hLoGB1BbAzhL3eV11lU+zHnYxx8gKHRZoox/ltPlF02y2Gnzr4J+Y/ZTpO/Ovgn5hppLm6jPKI8qO8oooOEQUhUZ7s6LI5RXnOrUEXIRBUmZ7xts77ipzAoLDZ7TtBHruFYNCOrqFV1uEaEZoQQ8DWnCfYPKq7TZWabJLQolZYOuTa4T+iE6/IomLRnoeU052m522OY/cppx9ZLnOpw9dLnEdUtHOcwUaXFANGfiH3lVDnE6STxpq0Y4WK1zNOOFitcyHuyqnSU4vo6Mw6yexctXwyufTTw1EdhJBKyZlxcZbHBwuNYuFtWK0ZnjyA4N69rrkXzWI+9VP6tO+fb5h516Pg+vQpUNiTSze5+R5Hh3gnFYjFbdCneOylrFZ3fO0bN1aMZ7+m+zjnWdWnGe/pfs451rH6su+fb5h50v6tO+fb5h51b9KwfOux+Rif2d4R/SffX7gO6jdJUYlOKiqLDKI2xXYzIGS0kjNt64om5PdTVYZK+alLA+SPoRy2B4ycoOzDjaE4bmnfPt8w86T9WnfPt8w86L03DWttLsfkF+QcI/pf9o/uLrGd9TFKuCWmmfD0KZhY8Nha0lp2HUtHV3UYAY2OeZQ7IblFuRa4vbaqVOo1Kc03TeRRxWCr4WSjWjst56p5e5s7OwTtWm5PD7gU5eK0G/pTxxRRmgqCY42MuJY8+S0C+jgR+r5T/8Ab6j00XMq3EVOb4op8fDp7svIv9+HddV4XDSyUpjDpZZGO6IwPBAaCLbF5X1acZ+cpvs451m+dvixYvFTxx00sJhke8l72uDsptrCy0nA8ONVURwBwYZMrriLgWaXaPEmpQpU3KotLt9SCjHjWtm+eS1XjY3bq1Yz31Kf9P8A3Xnxfe5K3Kp3vnxjPVx31NEbrn1qJ+pT/CG+jPOqSx+Bnmp/CXkaEOBsY1eNNv8A5L5yJW5/fOxKgp46WndTiGLLyQ+HKd17i83N8+dxVj1acY76l+z/AN1UQ7hnONv0lgPDG7P60fqeSeFM9G7nRS4TwCfrSXZLyOlwNjE84PvL9w3dDvmYjiFO+lqHQGKQsJDIcl12uDhY32gLTo35JBGkEEcYW2/qHLlBpnaL6+hm1tulF6nz/Cmejdzo/wA0wUdJrsl5E/k+Mjk6b7yf/osOrVjPfUv2f+60rHMWlrKiWqnyTLM4OdktyW3ADcw1ZgFsvU+f4Uz0budZ1PpPCmejdzoFwrgFpNdkvIGPBGLWkH75J+MiHuS3d1uFskjpTEGyvD3dEjyzcCwtnzKRul3ysRxCndS1LoDE5zHHIiyHXabjPfanu3v5LdsMv9W4feht3AyHTUMbn0ZBP3oZcJ4Fq6muyXkF+UYy99h95eG0a1gnbNNyiH3wveSV5zh24J7JYpP0uM9DkY/J6G4E5LgbaeBehuK8tw3iaVepB03eye5rf0pG1wXhqtGMlUjZ36OYwlMcUrihOKx0jWSI2JvIidbS4hg8ZCMMwA2ABRap13xM/j6IeJgzeslSHOT2rJL3/L5Fhr1Yrrfy+QN7kCRye9yjyORxQyEQUjlFe7OiyuUR7s6tQRcpxJEwORcaWkOHiRWvLgDfMc6cwavEhUotlNOlhI42nOCovddQF7rqDtRmhDaEVoSZCpMKwJxYCC06CCDxFNYEZiU3YRI1GqhLHuaf3TbjGooSv8do7tEgGduZ3FqKoAtmhU4yCl29ZsUKqqQUu0VYsWJo4WyVjCTYLI2FxsP9lOjjDRYeM7UMp2FznskOWIt4tu0rIIso8A0qwZFlnJte+aykyYaWDrOuGk99f70p1ksnqJeIUcnqUuMUmXBKGNu4sAAFs5utOdgVWM/QT50fOvQXNTLZT2jhueIK5hcfUw8XGKTWud+brMnH8EUcbNTqykrK2VtNd6Z590lqvmT5zOdZ0lqfmT5zOdemujB0gHjAKBUQMDSQ1t82rhVlcOVN8F8fMzl+G8G/6p9sP2nnPSap+ZPns51cbmMLqYaqKV0Ra1hku7KjNrscNvCthDRsCkUslsocF/z6kNfhSpUpyjsxzTW/erc/SPj+GsNSlGpGc7pp57Nsmn7JNe65uTc7TnKQFVlRUkmwRcOu99nPsPWeJZLpWjdm66OzHaZYwxFxsPLsVkM2b2pWsAADRYJFn1J7TM6U9sW6RIkJSiLC3WEppKy64mxiaSsLkwlEkFYUlYJnN0E8WkIAnvIY8g5hfK/OpKSmODWoexuZLbW98PJzJ7Z2nQfEcyrnFBlkyWk8HrUcUnoRxCehPiJMsjtAaOhDj0u9dkR7kGijyI2g9keuP0jnKV7kMktqyIaTllpp2DXuUaRyfI5RZHJ0Ij4RByuUR70SV6iucrcIl2nEvokypbkua/U7rD9xRIkZ0Qe0tOgi3FwqntWkUHJRld6AwEVqj0hJBa7smHJdxjQfGpTUM1bIGeTsEajNQmozEiRXkKWgggi4IsQdYWr4pRGJ/wDCc4PBs4wtramVlI2ZhY7jB707U3D4jipZ6PUPD1+Knd6PXzNJT4oy42Hl2I8lE9ryxwtk6TqI1EbVJbGALBa8qiSyNeVVWyGMYGiw/wB09YpuHU1zlnQNHCUmUtlXZXnNRV2SaCmyRc9kfUNilrFioSbbuzNlJyd2Bmpmv0jPtGYqDS0GU97muzA5Av6848XlU+ofkscdgzcepPw+PJjbw9d5f7WRqcowfYHGpKEG0+j5shuo3jVfiIQZ6Z+S7rTo4Fdpk3YniKhVpXIjiJXRrDaKQ/u247I0OGnKBc4AaLNF8x4SrIpFY46RadebKjE6ER2yQbayc5QaFhMjS1tgLaLkaOFbPkBwF9iRkLW6AFCxVoWazIWMahstXYo0BNKVzk0lUXmyqjCUhWEphK6wSFJTSUhKbdFYJIUlNJSOcmEokg0hzpChkpCU0uRpBxiYShsblSNGptnnxaB5U2SSwJOgKRQMyWlx7J/XHgGoJnJi2G/VjfsJj3KM9yc9yjyOSYxFQiNkeosr0+V6iSvVqES5TgDleghK510gVlKyLSVkbJEpMaixKVGsuZj1ANYzIcJRotkuA1jU7xIrNu1SLXFjnBzW4FCa3ob+hHOCMth0nJOo8S5PaVt68Pp4dQMW5RtvXh9PDqJTUcIDEVqSxUgrFIhjvxIUEd+JTWhInK2hWqStoR6/D2ytt2Lh2LtnAdoWr1kZhJa8ZJHr4RtC3ZqBXUEc7cl44nDM5p2gp2GxLh6suT4BYbFcU9mWcfiuo0+ki6IRbRpJ2BXbWgAAZgM1ljMO/R2hgNwSTld8eLUlVupUU3loWqtVVH6um4xYsWJYoh1vXFkY/ecL8Wjn8isgLKtphlzuOpgIHs51aKamVl95hVcrR6PH7QibIOtPEU9Nk0HiKWKWpXFNKeQmFWC2g8DsxGxPKjQmzuPMjlImsxclZmEpCVhTShJGkppKUlMJRhpClNJTS5NuiSDSHOQyUpKG5yNINIVzkJzljigSv0DWTYcaZGI2MQkTOiPt+4w3PCdQU97kOGMMaGjjJ2nWU17kEntPLQXJ7Ty0Ee5RpHpz3qNI9MjEbCAyR6ivddOkchq1GNi5CNjFgWLAiYbP/9k=
+thumb_image: 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
+image_position: right
+author: ""
+show_author_bio: true
+related_posts:
+  - src/pages/blog/passing-arguments-to-a-callback-in-js.md
+cmseditable: true
+---
+
+
+The npm registry contains packages, many of which are also Node modules, or contain Node modules. Read on to understand how they differ and how they interact.
+
+## About packages
+
+A **package** is a file or directory that is described by a `package.json` file. A package must contain a `package.json` file in order to be published to the npm registry. For more information on creating a `package.json` file, see "[Creating a package.json file][pkg-json]".
+
+Packages can be unscoped or scoped to a user or organization, and scoped packages can be private or public. For more information, see
+- "[About scopes][about-scopes]"
+- "[About private packages][private-pkgs]"
+- "[Package scope, access level, and visibility][pkg-viz]"
+
+### About package formats
+
+A package is any of the following:
+
+* a) A folder containing a program described by a `package.json` file.
+* b) A gzipped tarball containing (a).
+* c) A URL that resolves to (b).
+* d) A `<name>@<version>` that is published on the registry with (c).
+* e) A `<name>@<tag>` that points to (d).
+* f) A `<name>` that has a `latest` tag satisfying (e).
+* g) A `git` url that, when cloned, results in (a).
+
+### npm package git URL formats
+
+Git URLs used for npm packages can be formatted in the following ways:
+
+- `git://github.com/user/project.git#commit-ish`
+- `git+ssh://user@hostname:project.git#commit-ish`
+- `git+http://user@hostname/project/blah.git#commit-ish`
+- `git+https://user@hostname/project/blah.git#commit-ish`
+
+The `commit-ish` can be any tag, sha, or branch that can be supplied as
+an argument to `git checkout`. The default `commit-ish` is `master`.
+
+## About modules
+
+A **module** is any file or directory in the `node_modules` directory that can be loaded by the Node.js `require()` function.
+
+To be loaded by the Node.js `require()` function, a module must be one of the following:
+
+* A folder with a `package.json` file containing a `"main"` field.
+* A JavaScript file.
+
+<div class="note">
+
+<span class="bold">**Note:** </span>
+Since modules are not required to have a `package.json` file, not all modules are packages. Only modules that have a `package.json` file are also packages.
+
+</div>
+
+In the context of a Node program, the `module` is also the thing that
+was loaded *from* a file. For example, in the following program:
+
+    var req = require('request')
+
+we might say that "The variable `req` refers to the `request` module".