Iteration 5:
? nil-propagation: Field and Index handlers in js_cg_expr now detect when
the object expression is a Try node (the AST node for postfix `?`).
When detected, emit JS optional chaining: `(expr)?.["field"] ?? null`.
The `?? null` normalizes JS undefined to El's null. A bare `expr?` not
followed by field/index still passes through unchanged.
browser-auth.el: a realistic 130-line example demonstrating:
- @async function with Supabase via native_js_call
- DOM bridge: get/set value/text/attr, add/remove class, show/hide
- local_storage_get/set for session hints
- window_on_load for initialization
- window_set to expose functions to the browser global scope
- set_timeout for transient state, is_valid_email for input validation
Compiles cleanly with elc --target=js --bundle
Spec updated: status promoted to Phase 4 / ~80% coverage, nil-prop
status updated, new example referenced.
Will Anderson