Invert only the following predicate with the 'not' operator (#71)

readme.md

@@ -132,7 +132,7 @@ The following predicates are available on every type.
 
 #### not
 
-Inverts the following predicates.
+Inverts the following predicate.
 
 ```ts
 ow(1, ow.number.not.infinite);

source/lib/operators/not.ts

@@ -1,12 +1,14 @@
 import {Predicate, validatorSymbol} from '../predicates/predicate';
 
 /**
- * Operator which inverts all the validations.
+ * Operator which inverts the following validation.
  *
  * @hidden
  * @param predictate Predicate to wrap inside the operator.
  */
 export const not = <T, P extends Predicate<T>>(predicate: P) => {
+	const originalAddValidator = predicate.addValidator;
+
 	predicate.addValidator = validator => {
 		const fn = validator.validator;
 		const message = validator.message;
@@ -16,6 +18,8 @@ export const not = <T, P extends Predicate<T>>(predicate: P) => {
 
 		predicate[validatorSymbol].push(validator);
 
+		predicate.addValidator = originalAddValidator;
+
 		return predicate;
 	};
 

source/test/test.ts

@@ -2,12 +2,13 @@ import test from 'ava';
 import m from '..';
 
 test('not', t => {
+	t.notThrows(() => m('foo!', m.string.not.alphanumeric));
 	t.notThrows(() => m(1, m.number.not.infinite));
-	t.notThrows(() => m(1, m.number.not.infinite.greaterThan(5)));
+	t.notThrows(() => m(1, m.number.not.infinite.not.greaterThan(5)));
+	t.throws(() => m(6, m.number.not.infinite.not.greaterThan(5)));
 	t.notThrows(() => m('foo!', m.string.not.alphabetical));
 	t.notThrows(() => m('foo!', m.string.not.alphanumeric));
 	t.notThrows(() => m('foo!', m.string.label('foo').not.alphanumeric));
-	t.notThrows(() => m('foo!', m.string.not.label('foo').alphanumeric));
 	t.notThrows(() => m('foo!', m.string.not.alphanumeric.label('foo')));
 	t.notThrows(() => m('FOO!', m.string.not.lowercase));
 	t.notThrows(() => m('foo!', m.string.not.uppercase));