Improve browser compatibility (#15)

Author: shiyafei

index.js

@@ -6,6 +6,6 @@ const ignoreList = [
 ];
 
 // eslint-disable-next-line node/no-deprecated-api
-module.exports = (builtinModules || Object.keys(process.binding('natives')))
+module.exports = (builtinModules || (process.binding ? Object.keys(process.binding('natives')) : []) || [])
 	.filter(x => !/^_|^(internal|v8|node-inspect)\/|\//.test(x) && !ignoreList.includes(x))
 	.sort();