I'm using this lib to read xls files to gather some useful information from them.
At some time i have noticed that process sometimes crash. While investigating this issue i have found that some files (with noticeable amount of rows are very slow or failed to parse by workbook.xlsx.readFile(file)).

A'm using version 0.6.2 before and now upgrade to 1.1.1 and this issue reproducible on both.

Attaching example file that while parsing crash node process with out of memory.
1523272420-Member_Register_Data_Sheet_(V2).xlsx