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    mongo-diffpublic

    mongo-diff

    Component to perform a diff between two objects expressed as MongoDB operations.

    Example

    var diff = require('mongo-diff');
     
    // diff two arrays using set strategy 
    diff(['a', 'b', 'c'], ['b', 'c', 'a'])
     
    /*
    [
      ['pull', 'a'],
      ['push', 'a']
    ]
    */

    Strategies

    auto

    diff('a', null)
    // [['unset', 1]] 
     
    diff(1, 5)
    // [['inc', 4]] 

    val(a, b)

    diff.val('a', 'b')
    // [['set', 'b']] 
     
    diff.val('a', null)
    // [['unset', 1]] 

    Expresses differences as $set or $unset.

    inc(a, b, opts)

    diff.inc(5, 8, { interval: 1 })
    // [['inc', 1], ['inc', 1], ['inc', 1]] 

    Options:

    • interval increment interval. If null the interval defaults to the difference between the numbers (null)

    Expresses differences between numbers in terms of $inc operations.

    ordered_set(a, b)

    diff.ordered_set([], ['a']);
    // [['push', 'a']] 

    Expresses the difference between arrays as a series of $pull / $push operations. Useful to match differences on arrays that are used with the $addToSet MongoDB operation.

    TODO

    • More strategies
    • Ordered set indexOf should use deep matching for object/array support

    Keywords

    none

    install

    npm i mongo-diff

    Downloadsweekly downloads

    1

    version

    1.0.0

    license

    none

    repository

    github.com

    last publish

    collaborators

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