feat: add not equal evaluator

src/index.ts

@@ -11,6 +11,7 @@ export {
     GreaterThanOrEqual,
     LessThanOrEqual,
     Unsafe,
+    NotEqual,
 } from './lib/Evaluators';
 
 export type { Collection, ObjectId, JSONDocument } from './lib';

src/lib/Evaluators/NotEqual.evaluator.ts

@@ -0,0 +1,22 @@
+/** @format */
+
+import { EvaluatorFunction } from '../../types';
+import { isNonNull } from '../../utils';
+
+/**
+ * @description
+ * Method to check if a given value is not equal to a stored property
+ *
+ * @param { any } condition - Value to check for being not equal
+ * @returns { EvaluatorFunction }
+ */
+
+export const NotEqual = (...condition: any): EvaluatorFunction => {
+    return (value: unknown, propName?: string) => {
+        if (!isNonNull(value)) {
+            throw new TypeError(`[Query] Property ${propName} is null or undefined.`);
+        }
+
+        return condition !== value;
+    };
+};

src/lib/Evaluators/index.ts

@@ -8,3 +8,4 @@ export { GreaterThan, GreaterThanOrEqual } from './GreaterThan.evaluator';
 export { LessThan, LessThanOrEqual } from './LessThan.evaluator';
 export { In } from './In.evaluator';
 export { Unsafe } from './Unsafe.evaluator';
+export { NotEqual } from './NotEqual.evaluator';