refactor(js,ts): use double quotes for a single-line SQL queries

Relate to #26

Author: php-coder

examples/js/express/mysql/routes.js

@@ -6,7 +6,7 @@ const register = (app, pool) => {
 
     app.get('/v1/categories/count', (req, res, next) => {
         pool.query(
-            'SELECT COUNT(*) AS counter FROM categories',
+            "SELECT COUNT(*) AS counter FROM categories",
             (err, rows, fields) => {
                 if (err) {
                     return next(err)

examples/ts/express/mysql/routes.ts

@@ -9,7 +9,7 @@ const register = (app: Express, pool: Pool) => {
 
     app.get('/v1/categories/count', (req: Request, res: Response, next: NextFunction) => {
         pool.query(
-            'SELECT COUNT(*) AS counter FROM categories',
+            "SELECT COUNT(*) AS counter FROM categories",
             (err, rows, fields) => {
                 if (err) {
                     return next(err)

src/cli.js

@@ -270,7 +270,7 @@ const createEndpoints = async (destDir, { lang }, config) => {
                     const indentedSql = sql.replace(/\n/g, '\n' + indent)
                     return "\n" + indent + '`' + indentedSql + '`'
                 }
-                return `\n${indent}'${sql}'`
+                return `\n${indent}"${sql}"`
             },
 
             // Differs from formatQuery() as it doesn't flatten query (preserve original formatting)