<s>
Reason	O
,	O
also	O
known	O
as	O
ReasonML	B-Application
,	O
is	O
a	O
syntax	O
extension	O
and	O
toolchain	B-General_Concept
for	O
OCaml	B-Language
created	O
by	O
Jordan	O
Walke	O
,	O
who	O
also	O
created	O
React	B-Application
,	O
at	O
Facebook	B-Application
.	I-Application
</s>
<s>
Reason	O
offers	O
a	O
syntax	O
familiar	O
to	O
JavaScript	B-Language
programmers	O
,	O
and	O
compiles	O
to	O
native	O
code	O
using	O
OCaml	B-Language
's	O
compiler	O
toolchain	B-General_Concept
.	O
</s>
<s>
Reason	O
code	O
may	O
also	O
be	O
compiled	O
to	O
JavaScript	B-Language
using	O
the	O
ReScript	O
compiler	O
.	O
</s>
<s>
The	O
Reason	O
community	O
officially	O
provides	O
ReasonReact	O
as	O
a	O
solution	O
for	O
React-based	O
web	O
applications	O
.	O
</s>
<s>
Reason	O
was	O
originally	O
compiled	O
to	O
JavaScript	B-Language
using	O
the	O
BuckleScript	B-Application
compiler	O
,	O
which	O
was	O
created	O
at	O
Bloomberg	O
L.P.	O
</s>
<s>
In	O
2020	O
,	O
BuckleScript	B-Application
was	O
rebranded	O
to	O
ReScript	O
,	O
essentially	O
creating	O
a	O
separate	O
language	O
that	O
had	O
different	O
syntax	O
from	O
Reason	O
and	O
only	O
compiled	O
to	O
JavaScript	B-Language
.	O
</s>
<s>
The	O
ReScript	O
compiler	O
continues	O
to	O
support	O
Reason	O
syntax	O
,	O
and	O
the	O
two	O
languages	O
share	O
that	O
part	O
of	O
the	O
toolchain	B-General_Concept
.	O
</s>
