[quick-lru] introduce typings (#18730)

types/quick-lru/index.d.ts

@@ -0,0 +1,26 @@
+// Type definitions for quick-lru 1.1
+// Project: https://github.com/sindresorhus/quick-lru#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = QuickLRU;
+
+declare class QuickLRU<K, V> implements Iterable<[K, V]> {
+    readonly size: number;
+    constructor(options?: QuickLRU.Options);
+    [Symbol.iterator](): Iterator<[K, V]>;
+    set(key: K, value: V): this;
+    get(key: K): V | undefined;
+    has(key: K): boolean;
+    peek(key: K): V | undefined;
+    delete(key: K): void;
+    clear(): void;
+    keys(): Iterable<K>;
+    values(): Iterable<V>;
+}
+
+declare namespace QuickLRU {
+    interface Options {
+        maxSize: number;
+    }
+}

types/quick-lru/quick-lru-tests.ts

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+import QuickLRU = require('quick-lru');
+
+let num: number;
+let numu: number | undefined;
+let str: string;
+let bool: boolean;
+
+const lru = new QuickLRU<string, number>({maxSize: 1000});
+
+lru.set('🦄', 1).set('🌈', 2);
+numu = lru.get('🦄');
+bool = lru.has('🦄');
+numu = lru.peek('🦄');
+lru.delete('🦄');
+lru.clear();
+num = lru.size;
+
+for (const [key, value] of lru) {
+    str = key;
+    num = value;
+}
+
+for (const key of lru.keys()) {
+    str = key;
+}
+
+for (const value of lru.values()) {
+    num = value;
+}

types/quick-lru/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es2015",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "quick-lru-tests.ts"
+    ]
+}

types/quick-lru/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }