npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

expand-object

v0.4.2

Published

Expand a string into a JavaScript object using a simple notation. Use the CLI or as a node.js lib.

Downloads

123,495

Readme

expand-object NPM version Build Status

Expand a string into a JavaScript object using a simple notation. Use the CLI or as a node.js lib.

(TOC generated by verb using markdown-toc)

Install

Install with npm

$ npm i expand-object --save

Also see collapse-object, for doing the reverse of this library.

Examples

expand('a')
//=> {a: ''}

expand('a.b')
//=> {a: {b: ''}}

expand('a|b')
//=> {a: '', b: ''}

expand('a|b', {toBoolean: true})
//=> {a: true, b: true}

expand('a:b')
//=> {a: 'b'}

expand('a,b')
//=> ['a', 'b']

Type casting

Introduced in v0.2.2, some values are cast to their JavaScript type.

Booleans

If the value is "true" or "false" it will be coerced to a boolean value.

expand('a:true')
//=> {a: true}
expand('a:false')
//=> {a: false}

Numbers

If the value is an integer it will be coerced to a number.

expand('a:1')
//=> {a: 1}
expand('a:123')
//=> {a: 123}

Regex

If the value is a simple regular expression it will be coerced to a new RegExp().

expand('a:/foo/')
//=> {a: /foo/}
expand('a.b.c:/^bar/gmi')
//=> {a: {b: {c: /^bar/gmi}}}

Install

Install with npm

$ npm i expand-object --save

CLI

Usage with cli:

❯ expand-object --help

  Usage: expand-object [options] <string>

  Expand a string into a JavaScript object using a simple notation.

  Options:

    -h, --help     output usage information
    -V, --version  output the version number
    -r, --raw      Output as raw javascript object - not stringified

  Examples:

    $ expand-object "a:b"
    $ expand-object --raw "a:b"
    $ echo "a:b" | expand-object

node.js

To use as a node.js library:

var expand = require('expand-object');

children

Expand dots into child objects:

expand('a')
//=> {a: ''}
expand('a.b')
//=> {a: {b: ''}}
expand('a.b.c')
//=> {a: {b: {c: ''}}}
expand('a.b.c.d')
//=> {a: {b: {c: {d: ''}}}}

siblings

expand-object supports two kinds of siblings, general and adjacent. It's much easier to understand the difference in the last example.

general siblings

Use pipes (|) to expand general siblings:

expand('a|b')
//=> {a: '', b: ''}
expand('a|b|c')
//=> {a: '', b: '', c: ''}
expand('a|b|c|d')
//=> {a: '', b: '', c: '', d: ''}
expand('a:b|c:d')
//=> {a: 'b', c: 'd'}

adjacent siblings

Use plus (+) to expand adjacent siblings:

Adjacent siblings are objects that immediately follow one another.

expand('a:b+c:d')
//=> {a: 'b', c: 'd'}
expand('a.b:c+d:e')
//=> {a: {b: 'c', d: 'e'}}

difference between sibling types

In the example below:

  • general: d is a sibling to a
  • adjacent: d is a sibling to b
// general siblings
expand('a.b:c|d:e')
//=> { a: { b: 'c' }, d: 'e' }

// adjacent siblings
expand('a.b:c+d:e')
//=> { a: { b: 'c', d: 'e' } }

key-value pairs

Expand colons into key-value pairs:

expand('a:b')
//=> {a: 'b'}
expand('a.b:c')
//=> {a: {b: 'c'}}
expand('a.b.c:d')
//=> {a: {b: {c: 'd'}}}

arrays

Expand comma separated values into arrays:

expand('a,b')
//=> ['a', 'b']
expand('a,b,c')
//=> ['a', 'b', 'c']
expand('a:b,c,d|e:f,g,h')
//=> {a: ['b', 'c', 'd'], e: ['f', 'g', 'h']}

Usage examples

Expand siblings with comma separated values into arrays:

expand('a:b,c,d|e:f,g,h')
//=> {a: ['b', 'c', 'd'], e: ['f', 'g', 'h']}

Expand children with comma separated values into arrays:

expand('a.b.c:d,e,f|g.h:i,j,k')
//=> {a: { b: {c: ['d', 'e', 'f']}}, g: {h: ['i', 'j', 'k']}}

Expand sibling objects into key-value pairs:

expand('a:b|c:d')
//=> {a: 'b', c: 'd'}
expand('a:b|c:d|e:f')
//=> {a: 'b', c: 'd', e: 'f'}
expand('a:b|c:d|e:f|g:h')
//=> {a: 'b', c: 'd', e: 'f', g: 'h'}

Expand child objects into key-value pairs:

expand('a.b:c')
//=> {a: {b: 'c'}}
expand('a.b.c:d')
//=> {a: {b: {c: 'd'}}}
expand('a.b.c.d:e')
//=> {a: {b: {c: {d: 'e'}}}}

Expand sibling and child objects into key-value pairs:

expand('a:b|c:d')
//=> {a: 'b', c: 'd'}
expand('a.b.c|d.e:f')
//=> {a: {b: {c: ''}}, d: {e: 'f'}}
expand('a.b:c|d.e:f')
//=> {a: {b: 'c'}, d: {e: 'f'}}
expand('a.b.c:d|e.f.g:h')
//=> {a: {b: {c: 'd'}}, e: {f: {g: 'h'}}}

Related projects

expand-args: Expand parsed command line arguments using expand-object. | homepage

Running tests

Install dev dependencies:

$ npm i -d && npm test

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Author

Jon Schlinkert

License

Copyright © 2015 Jon Schlinkert Released under the MIT license.


This file was generated by verb on December 23, 2015.