<s>
JSGI	B-Language
,	O
or	O
JavaScript	B-Language
Gateway	O
Interface	B-Application
,	O
is	O
an	O
interface	B-Application
between	O
web	B-Application
servers	I-Application
and	O
JavaScript-based	O
web	B-Application
applications	I-Application
and	O
frameworks	O
.	O
</s>
<s>
It	O
was	O
inspired	O
by	O
the	O
Rack	B-Application
for	O
Ruby	B-Language
and	O
WSGI	B-Language
for	O
Python	B-Language
and	O
was	O
one	O
of	O
the	O
inspirations	O
of	O
PSGI	O
for	O
Perl	B-Language
.	O
</s>
<s>
is	O
a	O
reference	O
implementation	O
of	O
JSGI	B-Language
.	O
</s>
<s>
It	O
has	O
been	O
included	O
in	O
and	O
further	O
developed	O
by	O
the	O
CommonJS	B-Language
project	O
.	O
</s>
<s>
All	O
these	O
packages	O
are	O
for	O
Node.JS	B-Language
.	O
</s>
<s>
These	O
frameworks	O
allow	O
using	O
promises	B-Operating_System
with	O
Q	O
:	O
</s>
<s>
The	O
names	O
are	O
inspired	O
by	O
Sinatra	B-Application
.	O
</s>
