New Exists Method

Author: 1TGDev

README.md

@@ -107,6 +107,11 @@ await db.set('my_table', 'foo', 'bar');
 await db.get('my_table', 'foo');
 // -> Gets foo key name value (which is bar) in the table 'my_table'
 ```
+- exists (table, key)
+```js
+await db.exists('my_table', 'foo');
+// -> Checks if a specific data exists
+```
 - base_set (table, key, value)
 ```js
 await db.base_set('my_table', 'foo', 'bar');

examples/example.js

@@ -56,6 +56,9 @@ async function run(){
 	data = await db.get("my_table", "tariq");
 	console.log(data); // { age: 14 }
 
+	data = await db.exists("my_table", "tq"); // checks if a specific data exists
+	console.log(data); // false
+	
 	await db.base_set("my_table", "foo", "bar"); // stores 'bar' in 'foo' key name in the table 'my_table' but base encrypted
 
 	data = await db.base_get("my_table", "foo"); // gets foo key name value in the table 'my_table' for encrypted rows using base_set method

structures/classes/MySQL.js

@@ -32,4 +32,5 @@ module.exports = class MySQL extends EventEmitter{
 	base_set = require('../methods/base_set');
 	base_get = require('../methods/base_get');
 	end = require('../methods/end');
+	exists = require('../methods/exists');
 }

structures/methods/exists.js

@@ -0,0 +1,13 @@
+"use strict";
+
+const errors = require('../errors/strings.js');
+
+module.exports = async function(table, key){
+	if(!table || typeof table !== "string") throw new TypeError(errors.table.replace("{received}", typeof table));
+	if(!key || typeof key !== "string") throw new TypeError(errors.key.replace("{received}", typeof key));
+	
+	let tables = await this.tables();
+	if(!tables.includes(table)) return false;
+	let data = await this.get(table, key);
+	return (data != null) ? true : false;
+}