olibaron/node-csv-json

node-csvjson

Generate static JSON from CSV key/value data.

Getting Started

Using npm:

npm install node-csvjson --save-dev

Using yarn:

yarn install node-csvjson --save

Usage

var nodeCsvJson = require('node-csv-json');

nodeCsvJson('directory containing csv files');

Overview

This task builds JSON structures from key/value data defined in CSV format. Multiple JSON resources can be defined per CSV document.

The following CSV document:

key	bob	sue
name	Bob	Sue
sex	male	female
age	54	24

Will generate two JSON resources:

// dest/bob.json
{
	"name": "Bob",
	"sex": "male",
	"age": 54
}

// dest/sue.json
{
	"name": "Sue",
	"sex": "female",
	"age": 24
}

In your project's Gulpfile, add a section named csvjson to the data object passed into gulp.initConfig().

var gulp = require('gulp');
var csv2json = require('node-csvjson');
var options = {};
gulp.task('csvToJson', function () {
    return gulp
    	.src('src/**/*.csv')
        .pipe(csv2json(options))
        .pipe(gulp.dest('dist'));
});

Options

options

Type: Object

CSV parser options: see node-csv-parse#parser-options.

options = {
	auto_parse : true
};

options.processValue

Type: Function

Hook to process field value.

options = {
	processValue: function (key, value) {
		return value;
	}
};

CSV format

The expected format is one row per value, with resource names defined in the first row, and field keys in the first column.

key	resource-a
key-one	value-one
key-two	value-two

Object hierarchy

Object hierarchy is expressed with dot notation in the key.

The following data:

key	bob
person.name	Bob
person.sex	male
person.age	54

Will generate:

{
	"person": {
		"name": "Bob",
		"sex": "male",
		"age": 54
	}
}

Implicit array syntax

Arrays of values can be implicitly defined by duplicating keys.

The following data:

key	list
shopping.day	Sunday
shopping.list	fruit
shopping.list	candy
shopping.list	pasta
shopping.list	spinach

Will generate:

{
	"shopping": {
		"day": "Sunday",
		"list": ["fruit", "candy", "pasta", "spinach"]
	}
}

Explicit array syntax

Arrays of values can be explicitly defined by using integer keys.

The following data:

key	list
list.0.0	fruit
list.0.1	candy
list.1.0	pasta
list.1.1	spinach

Will generate:

{
	"list": [
		["fruit", "candy"],
		["pasta", "spinach"]
	]
}

node-csvjson