Result map is incorrect

[IanVS]

I'm trying this out with the latest esbuild 0.12.5, via a hacked-together version of snowpack, so I could have broken something there, but I'm finding that the output is mapping the wrong thing, I get values like:

var result3 = { "_Input_12syk_1": "h420205b8d955473ee51fd9760bbe0f66", "_Input___error_12syk_51": "hcc1aea921f960ec121be40adeeaf789b" };
var Input_module_default = result3;

Where I thought the keys should be something like just Input and the value should be _Input_12syk_1.