refactor(*): convert to babel and generation to lib, es, dist folders (#2)

* refactor(*): convert to babel and generation to lib, es, dist

* chore(*): remove generated files

* fix(*): lint run command

packages/bbob-core/src/index.js

@@ -0,0 +1,50 @@
+import { parse } from '@bbob/parser';
+import { iterate, match } from './utils';
+
+function walk(cb) {
+  return iterate(this, cb);
+}
+
+export default function bbob(plugs) {
+  const plugins = typeof plugs === 'function' ? [plugs] : plugs || [];
+
+  let options = {
+    skipParse: false,
+  };
+
+  return {
+    process(input, opts) {
+      options = opts || {};
+
+      const parseFn = options.parser || parse;
+      const renderFn = options.render;
+
+      let tree = options.skipParse
+        ? input || []
+        : parseFn(input, options);
+
+      tree.walk = walk;
+      tree.match = match;
+
+      plugins.forEach((plugin) => {
+        tree = plugin(tree, {
+          parse: parseFn,
+          render: renderFn,
+          iterate,
+          match,
+        }) || tree;
+      });
+
+      return {
+        get html() {
+          if (typeof renderFn !== 'function') {
+            throw new Error('"render" function not defined, please pass to "process(input, { render })"');
+          }
+          return renderFn(tree, tree.options);
+        },
+        tree,
+        messages: tree.messages,
+      };
+    },
+  };
+}