dedupbykey

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Install dedupbykey

npm i -g dedupbykey

Instructions

So pass in your arguments and dedupify your array of objects. You can pass in multiple key arguments to dedup based on a composite key.

Use

from the command line...

dedupbykey <file> <keys...>

Example w/ One Key

Input

[
{
    _id : '5153645',
    serialnumber : '12345'
},
{
    _id : '8778653',
    serialnumber : '12345'
}
]

Run Command

dedupbykey examplefile.json serialnumber 

Output

[
{
    _id : '8778653',
    serialnumber : '12345'
}
]

Use a redirect to put output in file

dedupbykey examplefile.json serialnumber > nodup.json

Example w/ Composite Key

Input

[
{
    _id : '5153645',
    serialnumber : '12345',
    name : 'product1'

},
{
    _id : '8778653'
    serialnumber : '12345',
    name : 'product1'
},
{
    _id : '9878684'
    serialnumber : '12345',
    name : 'otherproduct'
}
]

Run Command

dedupbykey examplefile.json serialnumber name

Output

[
{
    _id : '8778653'
    serialnumber : '12345',
    name : 'product1'
},
{
    _id : '9878684'
    serialnumber : '12345',
    name : 'otherproduct'
}
]

Use a redirect to put output in file

dedupbykey examplefile.json serialnumber > nodup.json