group jison loader and transformer

jison/loader.js

@@ -0,0 +1,12 @@
+const { Generator } = require('jison');
+const { validate } = require('schema-utils');
+const schema = require('./parser-options-schema.json');
+
+module.exports = function jisonLoader(source) {
+  const options = this.getOptions();
+  validate(schema, options, {
+    name: 'Jison Loader',
+    baseDataPath: 'options',
+  });
+  return new Generator(source, options).generate();
+};