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https://github.com/mholt/PapaParse

Fast and powerful CSV (delimited text) parser that gracefully handles large files and malformed input
https://github.com/mholt/PapaParse

csv csv-parser javascript

Last synced: 26 days ago
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Fast and powerful CSV (delimited text) parser that gracefully handles large files and malformed input

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README 

        
Parse CSV with JavaScript

========================================



Papa Parse is the fastest in-browser CSV (or delimited text) parser for JavaScript. It is reliable and correct according to [RFC 4180](https://tools.ietf.org/html/rfc4180), and it comes with these features:



- Easy to use

- Parse CSV files directly (local or over the network)

- Fast mode

- Stream large files (even via HTTP)

- Reverse parsing (converts JSON to CSV)

- Auto-detect delimiter

- Worker threads to keep your web page reactive

- Header row support

- Pause, resume, abort

- Can convert numbers and booleans to their types

- Optional jQuery integration to get files from `` elements

- One of the only parsers that correctly handles line-breaks and quotations



Papa Parse has **no dependencies** - not even jQuery.



Install

-------



papaparse is available on [npm](https://www.npmjs.com/package/papaparse). It

can be installed with the following command:

```shell

npm install papaparse

```



If you don't want to use npm, [papaparse.min.js](https://unpkg.com/papaparse@latest/papaparse.min.js) can be downloaded to your project source.



Usage

-----

```js

import Papa from 'papaparse';



Papa.parse(file, config);

    

const csv = Papa.unparse(data[, config]);

```



Homepage & Demo

----------------



- [Homepage](http://papaparse.com)

- [Demo](http://papaparse.com/demo)



To learn how to use Papa Parse:



- [Documentation](http://papaparse.com/docs)



The website is hosted on [Github Pages](https://pages.github.com/). Its content is also included in the docs folder of this repository. If you want to contribute on it just clone the master of this repository and open a pull request.



Papa Parse for Node

--------------------



Papa Parse can parse a [Readable Stream](https://nodejs.org/api/stream.html#stream_readable_streams) instead of a [File](https://www.w3.org/TR/FileAPI/) when used in Node.js environments (in addition to plain strings). In this mode, `encoding` must, if specified, be a Node-supported character encoding. The `Papa.LocalChunkSize`, `Papa.RemoteChunkSize` , `download`, `withCredentials` and `worker` config options are unavailable.



Papa Parse can also parse in a node streaming style which makes `.pipe` available.  Simply pipe the [Readable Stream](https://nodejs.org/api/stream.html#stream_readable_streams) to the stream returned from `Papa.parse(Papa.NODE_STREAM_INPUT, options)`.  The `Papa.LocalChunkSize`, `Papa.RemoteChunkSize` , `download`, `withCredentials`, `worker`, `step`, and `complete` config options are unavailable.  To register a callback with the stream to process data, use the `data` event like so: `stream.on('data', callback)` and to signal the end of stream, use the 'end' event like so: `stream.on('end', callback)`.



Get Started

-----------



For usage instructions, see the [homepage](http://papaparse.com) and, for more detail, the [documentation](http://papaparse.com/docs).



Tests

-----



Papa Parse is under test. Download this repository, run `npm install`, then `npm test` to run the tests.



Contributing

------------



To discuss a new feature or ask a question, open an issue. To fix a bug, submit a pull request to be credited with the [contributors](https://github.com/mholt/PapaParse/graphs/contributors)! Remember, a pull request, *with test*, is best. You may also discuss on Twitter with [#PapaParse](https://twitter.com/search?q=%23PapaParse&src=typd&f=realtime) or directly to me, [@mholt6](https://twitter.com/mholt6).



If you contribute a patch, ensure the tests suite is running correctly. We run continuous integration on each pull request and will not accept a patch that breaks the tests.