Add internal function defs.luastring_cmp for string equality checks

1 files changed, 6 insertions, 0 deletions

diff --git a/src/defs.js b/src/defs.js
index 0802376..315364a 100644
--- a/src/defs.js
+++ b/src/defs.js
@@ -135,6 +135,11 @@ const is_luastring = function(s) {
     return Array.isArray(s);
 };
 
+/* test two lua strings for equality */
+const luastring_cmp = function(a, b) {
+    return a === b || (a.length === b.length && a.join() === b.join());
+};
+
 const to_jsstring = function(value, from, to) {
     assert(is_luastring(value), "jsstring expects an array of bytes");
 
@@ -397,5 +402,6 @@ module.exports.lua_Debug               = lua_Debug;
 module.exports.lua_upvalueindex        = lua_upvalueindex;
 module.exports.thread_status           = thread_status;
 module.exports.is_luastring            = is_luastring;
+module.exports.luastring_cmp           = luastring_cmp;
 module.exports.to_jsstring             = to_jsstring;
 module.exports.to_luastring            = to_luastring;