Just to be clear, we still want this to be overwritable by the script tag here:

Or should we guard that to be basically:

var lazy = _lazy;

// if lazy is set to false, we cannot opt in?
if (lazy) {
  // check if option out of lazy
  for (...) {}
} 

Just thinking, because I guess it would kind of break in the case of performance/replay if this were to be overwritten to true again?

Just to be clear, we still want this to be overwritable by the script tag here:

Yup, the script tag always supercedes this. Here are the scenarios:

1. lazy = true + data-lazy not set -> lazy == true (default for errors)
2. lazy = false + data-lazy not set -> lazy == false (default for replay + perf)
3. lazy = true + data-lazy === 'no' -> lazy == false
4. lazy = false + data-lazy === 'no -> lazy == false

2. lazy = false + data-lazy not set -> lazy == false (default for replay + perf)

but wouldn't this case, with the current code, lead to lazy == true? 🤔

you're right 🤦 - I misunderstood the boolean condition ahhhhh

Let me change this

Fixed with f09a965!