wrong parsing d3.tsvParse with only number header about d3-dsv

[Fil]

Sorry I can't reproduce the issue: https://observablehq.com/d/f47916b62d483682

[samuelvaneck]

I tried again. It fails the code in my local dev enviroment but success on the observerablehq.com website. Not sure why for now. I'll futher investigate the issue.

[stahlmanDesign]

It could be related to the fact that you can't use dot notation if an object key begins with a number:

const invalidObj = { 1234: 0.000304539 } // error, 1234 cannot be the key unless cast as a string

const validObj = { '1234': 0.000304539 } // Valid, but can't access with dot notation
console.log(validObj.1234) // error
console.log(validObj['1234']) // 0.000304539 // must access the value using brackets

const alsoValid = { '1234 this phrase with spaces can also be an object key': 0.000304539 } // another example

[mbostock]

Closing since we can’t reproduce.