What is this?
Papa Parse is a fast CSV (delimited text) parser for JavaScript that runs in the browser. It is RFC 4180 compliant and handles large files and malformed input gracefully.
Papa Parse is a fast CSV (delimited text) parser for JavaScript that runs in the browser. It is RFC 4180 compliant and handles large files and malformed input gracefully.Is it a browser-only thing, or can I use it on the server too?It is primarily an in-browser library, but it also runs in Node.js: there it can parse a Readable Stream instead of a file, and it even supports Node-style .pipe streams.
It is primarily an in-browser library, but it also runs in Node.js: there it can parse a Readable Stream instead of a file, and it even supports Node-style .pipe streams.How do I add it to my project?Install the papaparse package from npm, or skip npm entirely and download papaparse.min.js straight into your project source.
Install the papaparse package from npm, or skip npm entirely and download papaparse.min.js straight into your project source.Does it drag any dependencies into my bundle?None. Papa Parse has no dependencies, so it drops into any JavaScript project without pulling in anything else.
None. Papa Parse has no dependencies, so it drops into any JavaScript project without pulling in anything else.If I run it in Node.js, what works differently?Some browser-oriented options are unavailable there: LocalChunkSize, RemoteChunkSize, download, withCredentials and worker. In the Papa.NODESTREAMINPUT pipe mode, step and complete are unavailable too.
Some browser-oriented options are unavailable there: LocalChunkSize, RemoteChunkSize, download, withCredentials and worker. In the Papa.NODESTREAMINPUT pipe mode, step and complete are unavailable too.Will parsing a huge file freeze my web page?No. It can stream large files, even over HTTP, and run parsing in worker threads to keep your page reactive. You also get pause, resume and abort controls mid-parse.
No. It can stream large files, even over HTTP, and run parsing in worker threads to keep your page reactive. You also get pause, resume and abort controls mid-parse.What about messy CSV, like quoted fields with line breaks inside?It is RFC 4180 compliant and described as one of the only parsers that correctly handles line breaks and quotations, so malformed input does not derail it.
It is RFC 4180 compliant and described as one of the only parsers that correctly handles line breaks and quotations, so malformed input does not derail it.Can it go the other way and turn JSON into CSV?Yes. Reverse parsing is built in: give it JSON and it converts it back to CSV.
Yes. Reverse parsing is built in: give it JSON and it converts it back to CSV.Does it auto-detect the delimiter and keep types straight?It auto-detects the delimiter and supports header rows, and it can convert numbers and booleans to their real types instead of leaving them as strings.
It auto-detects the delimiter and supports header rows, and it can convert numbers and booleans to their real types instead of leaving them as strings.What are similar projects?exceljs, normalizr, protobuf.js, marked, markdown-it, lollipop-css, howler.js, pollyjs
exceljs, normalizr, protobuf.js, marked, markdown-it, lollipop-css, howler.js, pollyjsWhich topics is it in?data-processing, csv, multithreading, parser, no-dependencies, http, javascript-library, json, streaming, browser, web-development, npm
data-processing, csv, multithreading, parser, no-dependencies, http, javascript-library, json, streaming, browser, web-development, npm