Last Updated: 2024-11-21

I was supposed to ship a few MB of JSON files to Project M. I created the files by printing the JSON to STDOUT and thought my job was done.

But luckily, before shipping, I decided to validate the JSON by running it through a lint tool:

$ yarn run jsonlint output/myevent.json

I discovered, luckily before shipping, that I had no commas between entries and therefore and data would be broken for input.

Lesson

• Always sanity check your data exports before handing it away (e.g. by importing the data to a DB, or parsing/linting)

• prefer using JSON.write type methods on the global data object rather than iteratively printing the elements (since this approach omits the between-element structure)