1n is a BigInt literal in JavaScript. BigInts currently display incorrectly/ don't display at all in the Stack Snippet console; console.log(1n) logs nothing and console.log([1n]) logs [null] instead of correctly displaying the BigInt values 1n and [1n].
Compared to an actual browser console, which logs the BigInt value correctly both as-is and in an array:
Example Snippet:
console.log(1n) // logs nothing
console.log([1n]) // logs [null]
![Screenshot of two lines of browser console output showing "1n" on line 1 and "[1n]" on line 2](https://cdn.statically.io/img/i.sstatic.net/S2Bna.png)