graphviz to database structure parser

snippets/db/dot_parser.js

@@ -136,7 +136,7 @@ function create_table_function (table) {
  *
  * @param {any} knex database connection
  * @returns {Promise} result
- */   
+ */
 function create_${table.name} (knex) {
   return knex.schema.createTable ('${table.name}', (table) => {
     ${table.columns
@@ -190,23 +190,25 @@ async function create_migration (file_path) {
   const tables = await get_tables (file_path);
   const functions = tables.map ((tab) => create_table_function (tab));
 
-  const file = `${functions.join ('\n\n')}
+  const file = `'use strict';
 
-/*
+${functions.join ('\n\n')}
+
+/**
  * run migration
  *
  * @param {any} knex db connection
  */
 ${create_up_function (tables)}
 
-/*
+/**
  * revert migration
- *
- * @param {any} knex db connection
  */
-function down () {}
+function down () {
+  // noop
+}
 
-module.exports = { up, down }
+module.exports = { up, down };
 `;
   return file;
 }

snippets/db/index.js

@@ -25,7 +25,7 @@ async function run (folder, args) {
   const graph = path.join (folder, args[0]);
   const migration = path.join (folder, args[1]);
 
-  const db_migration = dot_parser.create_migration (graph);
+  const db_migration = await dot_parser.create_migration (graph);
   await fs.writeFile (migration, db_migration, 'utf-8');
 }