Index: lang/Makefile
===================================================================
--- lang/Makefile
+++ lang/Makefile
@@ -155,6 +155,7 @@
     SUBDIR += itcl
     SUBDIR += itcl4
     SUBDIR += jakarta-commons-jelly
+    SUBDIR += janet
     SUBDIR += jimtcl
     SUBDIR += jruby
     SUBDIR += js_of_ocaml
Index: lang/janet/Makefile
===================================================================
--- /dev/null
+++ lang/janet/Makefile
@@ -0,0 +1,31 @@
+# $FreeBSD$
+
+PORTNAME=		janet
+DISTVERSIONPREFIX=	v
+DISTVERSION=		0.5.0
+CATEGORIES=		lang
+EXTRACT_SUFX=		.tar.gz
+
+MAINTAINER=		dch@FreeBSD.org
+COMMENT=		Dynamic lisp-ish language and bytecode vm
+
+LICENSE=		MIT
+LICENSE_FILE=		${WRKSRC}/LICENSE
+
+USES=			gmake tar
+
+USE_GITHUB=		yes
+GH_ACCOUNT=		janet-lang
+
+ALL_TARGET=		all
+MAKE_ENV=		JANET_BUILD='\"release\"'
+
+do-install:
+	cd ${WRKSRC} && \
+	    env PREFIX=${STAGEDIR}${PREFIX} ${GMAKE} install
+
+post-install:
+	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/janet
+	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libjanet.*
+
+.include <bsd.port.mk>
Index: lang/janet/distinfo
===================================================================
--- /dev/null
+++ lang/janet/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1558612570
+SHA256 (janet-lang-janet-v0.5.0_GH0.tar.gz) = f5c90122715869657427cbba62809a1d53eaaced2268e7d55202301d65a75076
+SIZE (janet-lang-janet-v0.5.0_GH0.tar.gz) = 409322
Index: lang/janet/pkg-descr
===================================================================
--- /dev/null
+++ lang/janet/pkg-descr
@@ -0,0 +1,7 @@
+Janet is a functional and imperative programming language and bytecode
+interpreter. It is a modern lisp, but lists are replaced by other data
+structures with better utility and performance (arrays, tables, structs,
+tuples). The language also supports bridging to native code written in
+C, meta-programming with macros, and bytecode assembly.
+
+WWW: https://janet-lang.org/