Make binding.js syntactically valid

Put the end of the surrounding closure into a separate file, suffix.js.

lib/binding_web/binding.js

@@ -7,7 +7,6 @@ const SIZE_OF_RANGE = 2 * SIZE_OF_INT + 2 * SIZE_OF_POINT;
 const ZERO_POINT = {row: 0, column: 0};
 const QUERY_WORD_REGEX = /[\w-.]*/g;
 
-const PREDICATE_STEP_TYPE_DONE = 0;
 const PREDICATE_STEP_TYPE_CAPTURE = 1;
 const PREDICATE_STEP_TYPE_STRING = 2;
 
@@ -1140,7 +1139,3 @@ function marshalEdit(edit) {
 }
 
 Parser.Language = Language;
-
-return Parser;
-
-}));

lib/binding_web/suffix.js

@@ -0,0 +1,2 @@
+return Parser;
+}));

script/build-wasm

@@ -95,6 +95,7 @@ $emcc                                \
   --js-library ${web_dir}/imports.js \
   --pre-js ${web_dir}/prefix.js      \
   --post-js ${web_dir}/binding.js    \
+  --post-js ${web_dir}/suffix.js    \
   lib/src/lib.c                      \
   ${web_dir}/binding.c               \
   -o target/scratch/tree-sitter.js