Viewing profile — sheetjs

Knuth is also still reviewing TAOCP-related email and issuing reward checks. A teammate received a reward check for 1 hex dollar last month after finding an error in Seminumerical …

SheetJS | https://sheetjs.com/ | Software Developer | Full time, Remote (US) | $165K - $240K We're a bootstrapped company building open source solutions for spreadsheets and struct…

Last year, Bing and Edge erroneously flagged our website https://sheetjs.com/ as "dangerous": https://i.imgur.com/BvA3zrk.png At the time, there was no "Safety Report" to indicate …

Under the hood, modern Numbers stores values in Decimal128 (16 bytes)

SheetJS | https://sheetjs.com/ | Software Developer | Full time, Remote (US) | $165K - $240K We're a bootstrapped company building open source solutions for spreadsheets and struct…

Under the hood, numpy and friends punt to native code. FFI / native module performance becomes a bottleneck, and Bun is correctly focusing in this area. Shumai [1] is a cool librar…

JavaScript has a massive and unrivaled ecosystem outside of core data analysis. The main hurdle to adoption is ecosystem and community. A generation of applied mathematicians and d…

The hardest unsolved problem is document compatibility. It's not enough to have a cool tool -- you need to be able to interchange data with existing users of Excel and other workfl…

Unfortunately the source spreadsheet was not shared, but the root cause was a misreported codepage (which you can actually fix with a hex editor!) "Â ", where the second character …

A Seattle Times article from 1989: > Inside Microsoft – A ‘Velvet Sweatshop’ or a High-Tech Heaven? https://www.seattletimes.com/business/archive-inside-microso...

This password specifically refers to "Password to Modify" and Excel 2019 / 365 clearly warn in the reenter password popup: > Caution: Password to modify is not a security feature. …

Hi, random developer that somehow ended up in the top 500 but didn't have 2FA turned on ( https://www.npmjs.com/package/xlsx )! npm inc invalidated all of our authentication tokens…

Software Arts published an official technical specification of the DIF file format in 1983. [1] (to save a file in the DIF format, /S#S in VC) It is certainly an interesting format…

Maybe a story from a maintainer would help. To contextualize, the main SheetJS open source project https://github.com/SheetJS/sheetjs has over 28K stars. tl;dr: the project involve…

Pre-Unicode issues still haunt us today, kept alive by various file formats that rely on system encoding. Under the Apple "Mac-Roman" encoding [1], the standard MacOS encoding befo…

Our story is very similar. I wrote a small library for converting XLSX and XLS files to CSV. Over the years, that grew into one of the most popular open source libraries on npm/git…

> Spreadsheet evolution has been slow though. Excel has to contend with nearly 40 years of backwards compatibility (MultiPlan, the predecessor to Excel, was released in 1982) and a…