# X_E2E_EVALUATE_CAPTURED

## Means

a page.evaluate() closure named a binding the page does not have

## Typical cause

raised from the page's own `ReferenceError`, naming the binding, because no static scan can catch it: measured on Bun 1.4.0, `const wanted = 3; (() => wanted === 3).toString()` is `"() => !0"` — the transpiler constant-folds a captured primitive away before `toString()` runs, so a captured value may not exist in the source at all

## Fix

pass the value through the page instead of closing over it

[Testing](/error-codes#testing)