Fixed build error

package.json

@@ -29,7 +29,7 @@
     "gulp": "^3.9.1",
     "sass": "^1.14.1",
     "sha256": "^0.2.0",
-    "ttypescript": "^1.5.5",
+    "ttypescript": "1.5.5",
     "typescript": "^3.1.1",
     "wat2wasm": "^1.0.2"
   },

tools/build_dtsgen.sh

@@ -5,7 +5,7 @@ source "${BASEDIR}/../scripts/resolve_commands.sh"
 cd "$BASEDIR/dtsgen"
 
 execute_tsc -p tsconfig.json
-if [ $? -ne 0 ]; then
+if [[ $? -ne 0 ]]; then
     echo "Failed to build typescript declaration generator"
     exit 1
 fi

tools/dtsgen/tsconfig.json

@@ -3,10 +3,12 @@
     "baseUrl": ".",
     "moduleResolution": "node",
     "module": "commonjs",
-    "lib": ["es6"],
+    "lib": ["es6", "dom"],
 
+    /*
     "typeRoots": [],
-    "types": []
+    "types": [],
+    */
   },
   "files": [
     "declarator.ts",