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big-csv

v0.0.1

Published

An uncomplicated CSV reader for working with big CSV files.

Downloads

23

Readme

Big CSV

NPM Version NPM Downloads Node.js Version Build Status Coverage Status Gittip

An uncomplicated CSV library (parser and serializer) that works with big CSV files. This writes and reads individual lines instead of the entire file so that you don't have to load the entire CSV file into memory. It works at the moment but I'm still hashing out the scalability of it.

Install

npm install big-csv or yarn add big-csv


id,name,weight,description,inventory.amount,inventory.price
1,Apple,23.25,"A red fruit",5,1.25
2,Orange,19.68,"An orange colored round fruit",9,2.30

Reading

const CSV = require('big-csv')

let csv = new CSV('fruit.csv')
csv.read().then(console.log)

Outputs:

[
    {
        "id": 1,
        "name": "Apple",
        "weight": 23.25,
        "description": "A red fruit",
        "inventory": {
            "amount": 5,
            "price": 1.25
        }
    },
    {
        "id": 2,
        "name": "Orange",
        "weight": 19.68,
        "description": "An orange colored round fruit",
        "inventory": {
            "amount": 9,
            "price": 2.30
        }
    }
]

Writing

csv.write({
    "id": 3,
    "name": "Watermelon",
    "weight": 100.5,
    "description": "A strange green spherical type blob",
    "inventory": {
        "amount": 9232,
        "price": -252.00
    }
}).then(_ => {
    console.log('wrote object to csv')
})

Creates the CSV, using the object's property names as a header, and appends a row to the CSV:

3,Watermelon,100.5,"A strange green spherical type blob",9232,-252.00