pandasxpandas for Node.js

Typed, columnar DataFrame and Series with the pandas API you already know — checked against real pandas.

The pandas API, in TypeScript

loc / iloc, groupby, merge, pivot_table, resample, rolling, .str, .dt, .cat, query strings — with camelCase names and full typings.

Fast, typed columns

Numbers and dates live in Float64Array, booleans in Uint8Array, categories in Int32Array. Nullable Int64 / Float64 / boolean and exact bigint integers.

Verified against pandas

214 parity cases compare results with pandas 3.1, and fixture files written by pandas are read back in the test suite.

Every format

CSV (streaming, compressed, from URLs), JSON, Excel, Parquet, Feather/Arrow, HDF5, SQL, HTML, XML, LaTeX and Markdown.

Time series

Calendar offsets, business days, IANA time zones with DST handling, resampling, rolling / expanding / ewm windows.

Charts and styled tables

Accessible SVG plots with light and dark themes, and a pandas-compatible Styler for HTML, LaTeX and Excel.