Hmm if typing the JSON manually maybe run it through a JSON validator tool like this one: https://jsonlint.com/
In the web IDE you can also just upload a file directly from your computer.
@jgDev started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Hmm if typing the JSON manually maybe run it through a JSON validator tool like this one: https://jsonlint.com/
In the web IDE you can also just upload a file directly from your computer.