js: proper distinction between Opt/Option

until now, this had very strange (and inconsistent) semantics:

* err() was used for exception propagation, but also as a null value
* Option accepted undefined as a none value, but not null
* Opt and Option were used interchangeably (and mostly randomly)

Now, Result is always used for error reporting, and err(nil) means
JS_EXCEPTION. (Opt is a special case of Result where we don't care about
the error type, and is not used in JS.)

Option on the other hand means "nullable variation of normally
non-nullable type", and translates to JS_NULL. In JS we mainly use
it for turning strings nullable.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/loader/cgi.nim b/src/loader/cgi.nim
index 8d6d60b3..3e3ec4fc 100644
--- a/src/loader/cgi.nim
+++ b/src/loader/cgi.nim
@@ -11,7 +11,6 @@ import loader/headers
 import loader/loaderhandle
 import loader/request
 import types/formdata
-import types/opt
 import types/url
 import utils/twtstr