advisr-io / excel4node

Node module to allow for easy Excel file creation
MIT License
126 stars 20 forks source link

Performance optimization adding styles #101

Open jjensenbloom opened 1 month ago

jjensenbloom commented 1 month ago

When adding styles to a large number of cells, calling new Style() each time to check if the style exists is slow. Instead, the stringified style options are used as the lookup key before calling new Style().

For my use case, I had 35000+ rows, which 10 columns each. This optimization sped up generation by 30-40%.

Ran tests and all passed.