Fix has() TTL semantics - use #isExpired() consistently

has() was incorrectly treating expiry === 0 as expired when ttl > 0,
while #isExpired() and cleanup() correctly treat expiry === 0 as noTTL.

Aligns has() with the rest of the TTL semantics by using #isExpired().

Author: avoidwork

coverage.txt

@@ -3,8 +3,8 @@
 ℹ file      | line % | branch % | funcs % | uncovered lines
 ℹ ----------------------------------------------------------
 ℹ src       |        |          |         | 
-ℹ  lru.js   | 100.00 |    99.27 |  100.00 | 
+ℹ  lru.js   | 100.00 |    99.26 |  100.00 | 
 ℹ ----------------------------------------------------------
-ℹ all files | 100.00 |    99.27 |  100.00 | 
+ℹ all files | 100.00 |    99.26 |  100.00 | 
 ℹ ----------------------------------------------------------
 ℹ end of coverage report

dist/tiny-lru.cjs

@@ -213,11 +213,11 @@ class LRU {
 	 * Checks if a key exists in the cache.
 	 *
 	 * @param {string} key - The key to check for.
-	 * @returns {boolean} True if the key exists, false otherwise.
+	 * @returns {boolean} True if the key exists and is not expired, false otherwise.
 	 */
 	has(key) {
 		const item = this.items[key];
-		return item !== undefined && (this.ttl === 0 || item.expiry > Date.now());
+		return item !== undefined && !this.#isExpired(item);
 	}
 
 	/**

dist/tiny-lru.js

@@ -211,11 +211,11 @@ class LRU {
 	 * Checks if a key exists in the cache.
 	 *
 	 * @param {string} key - The key to check for.
-	 * @returns {boolean} True if the key exists, false otherwise.
+	 * @returns {boolean} True if the key exists and is not expired, false otherwise.
 	 */
 	has(key) {
 		const item = this.items[key];
-		return item !== undefined && (this.ttl === 0 || item.expiry > Date.now());
+		return item !== undefined && !this.#isExpired(item);
 	}
 
 	/**

dist/tiny-lru.min.js

@@ -204,11 +204,11 @@ export class LRU {
 	 * Checks if a key exists in the cache.
 	 *
 	 * @param {string} key - The key to check for.
-	 * @returns {boolean} True if the key exists, false otherwise.
+	 * @returns {boolean} True if the key exists and is not expired, false otherwise.
 	 */
 	has(key) {
 		const item = this.items[key];
-		return item !== undefined && (this.ttl === 0 || item.expiry > Date.now());
+		return item !== undefined && !this.#isExpired(item);
 	}
 
 	/**