@package/value

    0.0.16 • Public • Published

    @package/value

    work around for existential getting/setting values in nested Objects

    Installation

     
        >$ npm install @package/value
     

    Test

     
        @package/value>$ npm test
     

    Build

    if you want to convert @package/value into es5, you can simply run:

     
        @package/value>$ npm run build
     

    API

    value( item:Object, path:String ):Mixed

    Returns the property value at the specified path in an Object.

    Example:

     
        import {value} from '@package/value';
     
        var data = { one : { two : { three : true, four : [1, 2, 3, 4] } } };
     
        value( data, 'one' );            // returns => { two : { three : true, four : [1, 2, 3, 4] } }
     
        value( data, 'one.two' );        // returns => { three : true, four : [1, 2, 3, 4] }
     
        value( data, 'one.two.three' );  // returns => { three : true }
     
        value( data, 'one.two.four' );   // returns => [1, 2, 3, 4]
     
        value( data, 'one.two.four.2' ); // returns => 3
     

    assign( item:Object, path:String, value:Mixed ):Mixed

    Assign a value to an item using the given path.

    Returns the passed value.

    Example:

     
        import {assign} from '@package/value';
     
        var data = {};
     
        assign( data, 'one', {} );                   // data == { one : {} }
     
        value( data, 'one.two', {} );                // data == { one : { two : {} } }
     
        value( data, 'one.two.three', true );        // data == { one : { two : { three : true } } }
     
        value( data, 'one.two.four', [1, 2, 3, 4] ); // data == { one : { two : { three : true, four : [1, 2, 3, 4] } } }
     

    bless( namespace:String[, context:Object] ):Object

    Creates an Object representation of the passed namespace String and returns it.

    If a context Object is given, the Object tree created will be added to the context Object, otherwise it will be added to the global namespace.

    NOTE: If any existing Objects with the same name already exist, they will NOT be replaced and any child Objects will be appended to them.

    Example:

     
        import {bless} from '@package/value';
     
    // ENV == 'browser'
        bless( 'foo.bar' );       // creates => global.foo.bar
     
    // you can now do:
        foo.bar.Something = function() {};
     
        bless( 'foo.bar', value );   // creates => foo.bar
     
        var bar = bless( 'foo.bar' );
     
        bar === foo.bar              // returns => true
     

    IMPORTANT: When using bless within a commonjs module: if you want your namespace Object to be assigned to the correct module.exports, then you should always pass the module — not module.exports — instance as the context (ctx) of your namespace.

    Example:

     
        import {bless} from '@package/value';
     
    // ENV == 'commonjs'
     
    // inside my_commonjs_module.js
        bless( 'foo.bar', module );            // creates => module.exports.foo.bar
     
    // you can now do:
        module.exports.foo.bar.Something = function() {};
     
    // if you want to include "exports" in your namespace, you can do so by placing a carat (^) at the start of the String
        bless( 'exports.foo.bar', module ); // creates => module.exports.foo.bar
     
    // otherwise, you will end up creating an extra exports Object, e.g:
        bless( 'exports.foo.bar', module ); // creates => module.exports.exports.foo.bar
     
    // alternatively, you can also do:
        bless( 'foo.bar', module.exports ); // creates => module.exports.foo.bar
     

    coerce( item:Mixed ):Mixed

    Attempts to coerce primitive values "trapped" in Strings, into their real types.

    Example:

     
        import {coerce} from '@package/value';
     
        coerce( 'false' );       // returns false
     
        coerce( 'null' );        // returns null
     
        coerce( 'true' );        // returns true
     
        coerce( 'undefined' );   // returns undefined
     
        coerce( 'NaN' );         // returns NaN
     
        coerce( '0001' );        // returns 1
     
        coerce( '0012' );        // returns 12
     
        coerce( '0123' );        // returns 123
     
        coerce( '123.4' );       // returns 123.4
     
        coerce( '123.45' );      // returns 123.45
     
        coerce( '123.456' );     // returns 123.456
     
        coerce( '123.456.789' ); // returns "123.456.789"
     

    empty( value:Mixed ):Boolean

    Returns true if the passed value does not exist (see exist below), is an empty Array, Object, String or any other enumerable type.

    Example:

     
        import {empty} from '@package/value';
     
        empty( undefined );    // returns => true
     
        empty( null );         // returns => true
     
        empty( '' );           // returns => true
     
        empty( [] );           // returns => true
     
        empty( {} );           // returns => true
     
        empty( ' ' );          // returns => false
     
        empty( [1] );          // returns => false
     
        empty( { 0 : null } ); // returns => false
     

    exists( value:Mixed ):Boolean

    Returns false if the passed value is undefined , NaN or null, returns true otherwise.

    Example:

     
        import {exists} from '@package/value';
     
        exists( undefined ); // returns => false
     
        exists( NaN );       // returns => false
     
        exists( null );      // returns => false
     
        exists( 0 );         // returns => true
     
        exists( false );     // returns => true
     
        exists( {} );        // returns => true
     

    License

    (The MIT License)

    Copyright (c) 2011 christos "constantology" constandinou http://muigui.com

    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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    Install

    npm i @package/value

    DownloadsWeekly Downloads

    5

    Version

    0.0.16

    License

    MIT

    Last publish

    Collaborators

    • wistla
    • muigui
    • constantology
    • jeffwad
    • ibrokethat
    • package