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A document path library for Node.JS

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A Document Path Library for Node

Build Status David - Dependency Checker Icon Monthly Downloads NPM version

This module will take paths in documents which can include nested paths specified by '.'s and can evaluate the path to a value, or can set the value at that path depending on the function called.

Installation

$ npm install doc-path

Usage

var path = require('doc-path');

API

path.evaluatePath(document, key)

  • document - Object - A JSON document that will be iterated over.
  • key - String - A path to the existing key whose value will be returned.

If the key does not exist, null is returned.

path.evaluatePath Example:
var path = require('doc-path');

var document = {
    Make: 'Nissan',
    Model: 'Murano',
    Year: '2013',
    Specifications: {
        Mileage: '7106',
        Trim: 'S AWD'
    }
};

console.log(path.evaluatePath(document, 'Make'));
// => 'Nissan'

console.log(path.evaluatePath(document, 'Specifications.Mileage'));
// => '7106'

path.setPath(document, key, value)

  • document - Object - A JSON document that will be iterated over.
  • key - String - A path to the existing key whose value will be set.
  • value - * - The value that will be set at the given key.

If the key does not exist, then the object will be built up to have that path. If no document is provided, an error will be thrown.

path.setPath Example:

var path = require('doc-path');

var document = {
    Make: 'Nissan'
};

console.log(path.setPath(document, 'Color.Interior', 'Tan'));
// => { Make: 'Nissan', Color: { Interior: 'Tan' } }

console.log(path.setPath(document, 'StockNumber', '34567'));
// => { Make: 'Nissan', Color: { Interior: 'Tan' }, StockNumber: '34567' }

Tests

$ npm test

Note: This requires mocha, should, async, and underscore.

To see test coverage, please run:

$ npm run coverage

Current Coverage is:

Statements   : 100% ( 22/22 )
Branches     : 90% ( 9/10 )
Functions    : 100% ( 2/2 )
Lines        : 100% ( 19/19 )

Features

  • Supports nested paths
  • Same common path specification as other programs such as MongoDB

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A document path library for Node.JS

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