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expand-object - npm

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

• Install
  • Type casting
• Install
• CLI
• node.js
  • children
  • siblings
    • general siblings
    • adjacent siblings
    • difference between sibling types
  • key-value pairs
  • arrays
• Usage examples
• Related projects
• Running tests
• Contributing
• Author
• License

(TOC generated by verb using markdown-toc)

Install with npm

$ npm i expand-object --save

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

Examples

expand('a')
 
expand('a.b')
 
expand('a|b')
 
expand('a|b', {toBoolean: true})
 
expand('a:b')
 
expand('a,b')

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')
expand('a:false')

Numbers

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

expand('a:1')
expand('a:123')

Regex

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

expand('a:/foo/')
expand('a.b.c:/^bar/gmi')

Install with npm

$ npm i expand-object --save

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

To use as a node.js library:

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

Expand dots into child objects:

expand('a')
expand('a.b')
expand('a.b.c')
expand('a.b.c.d')

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

Use pipes (|) to expand general siblings:

expand('a|b')
expand('a|b|c')
expand('a|b|c|d')
expand('a:b|c:d')

Use plus (+) to expand adjacent siblings:

Adjacent siblings are objects that immediately follow one another.

expand('a:b+c:d')
expand('a.b:c+d:e')

In the example below:

• general: d is a sibling to a
• adjacent: d is a sibling to b

expand('a.b:c|d:e')
 
expand('a.b:c+d:e')

Expand colons into key-value pairs:

expand('a:b')
expand('a.b:c')
expand('a.b.c:d')

Expand comma separated values into arrays:

expand('a,b')
expand('a,b,c')
expand('a:b,c,d|e:f,g,h')

Expand siblings with comma separated values into arrays:

expand('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')

Expand sibling objects into key-value pairs:

expand('a:b|c:d')
expand('a:b|c:d|e:f')
expand('a:b|c:d|e:f|g:h')

Expand child objects into key-value pairs:

expand('a.b:c')
expand('a.b.c:d')
expand('a.b.c.d:e')

Expand sibling and child objects into key-value pairs:

expand('a:b|c:d')
expand('a.b.c|d.e:f')
expand('a.b:c|d.e:f')
expand('a.b.c:d|e.f.g:h')

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

Install dev dependencies:

$ npm i -d && npm test

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

Jon Schlinkert

• github/jonschlinkert
• twitter/jonschlinkert

Copyright © 2015 Jon Schlinkert Released under the MIT license.

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

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