Add @types/frecency (#35742)

* add @types/frecency

* update

types/frecency/index.d.ts

@@ -0,0 +1,28 @@
+// Type definitions for frecency 1.3
+// Project: https://github.com/mixmaxhq/frecency#readme
+// Definitions by: swyx <https://github.com/sw-yx>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+// TypeScript Version: 2.3
+
+export type idAttrFn = (result: string) => string;
+export default class Frecency<T = any> {
+    constructor(constructOpts: {
+        key: string;
+        idAttribute?: string | idAttrFn;
+        timeStampsLimit?: number;
+        recentSelectionsLimit?: number;
+        storageProvider?: object;
+        exactQueryMatchWeight?: number;
+        subQueryMatchWeight?: number;
+        recentSelectionsMatchWeight?: number;
+    });
+    save: (arg: { searchQuery: T; selectedId: string }) => void;
+    sort:
+        | ((arg: { searchQuery: T; searchResults: T[] }) => T[])
+        | ((arg: {
+              searchQuery: T;
+              searchResults: T[];
+              keepScores?: boolean;
+          }) => Array<T & { _frecencyScore?: number }>);
+}

types/frecency/tsconfig.json

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

types/frecency/tslint.json

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+{ "extends": "dtslint/dt.json" }