Will this CSV survive a typed round trip and a spreadsheet: leading zeros, big ids, dates, formulas,

Overview

Parses CSV text (RFC 4180, caller dialect) against a column type map and reports, per cell with row, column, physical line and byte offset, everything that would change on a parse-serialize-parse round trip or when opened in Excel or Sheets: leading zeros stripped, integers beyond 2^53 or 15 significant digits, scientific-notation and date coercion ("1E5", "1-2", "MARCH1"), formula injection (= + - @, tab, CR, LF, full-width forms), cells over 32,767 characters, embedded newl

Health