Add tinybench to run benchmarks in Fantom (facebook#48453)

Summary:
Pull Request resolved: facebook#48453

Changelog: [internal]

Adds tinybench 3.1.0 (which has support for sync execution) and defined Flow types for the package.

Reviewed By: dmytrorykun

Differential Revision: D66698545

fbshipit-source-id: faf44add74e5711ac0d50794ce3360eedc45f0a5

Author: rubennorte

flow-typed/npm/tinybench_v3.1.x.js

@@ -0,0 +1,121 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict
+ * @format
+ * @oncall react_native
+ */
+
+declare module 'tinybench' {
+  declare export class Task extends EventTarget {
+    name: string;
+    result: void | $ReadOnly<TaskResult>;
+    runs: number;
+
+    reset(): void;
+    run(): Promise<Task>;
+    runSync(): Task;
+    warmup(): Promise<void>;
+  }
+
+  export type Hook = (
+    task: Task,
+    mode: 'run' | 'warmup',
+  ) => Promise<void> | void;
+
+  export type BenchOptions = {
+    iterations?: number,
+    name?: string,
+    now?: () => number,
+    setup?: Hook,
+    signal?: AbortSignal,
+    teardown?: Hook,
+    throws?: boolean,
+    time?: number,
+    warmup?: boolean,
+    warmupIterations?: number,
+    warmupTime?: number,
+  };
+
+  export interface Statistics {
+    aad: void | number;
+    critical: number;
+    df: number;
+    mad: void | number;
+    max: number;
+    mean: number;
+    min: number;
+    moe: number;
+    p50: void | number;
+    p75: void | number;
+    p99: void | number;
+    p995: void | number;
+    p999: void | number;
+    rme: number;
+    samples: number[];
+    sd: number;
+    sem: number;
+    variance: number;
+  }
+
+  export interface TaskResult {
+    critical: number;
+    df: number;
+    error?: Error;
+    hz: number;
+    latency: Statistics;
+    max: number;
+    mean: number;
+    min: number;
+    moe: number;
+    p75: number;
+    p99: number;
+    p995: number;
+    p999: number;
+    period: number;
+    rme: number;
+    samples: number[];
+    sd: number;
+    sem: number;
+    throughput: Statistics;
+    totalTime: number;
+    variance: number;
+  }
+
+  export type FnOptions = {
+    afterAll?: (this: Task) => void | Promise<void>,
+    afterEach?: (this: Task) => void | Promise<void>,
+    beforeAll?: (this: Task) => void | Promise<void>,
+    beforeEach?: (this: Task) => void | Promise<void>,
+  };
+
+  export type Fn = () => Promise<mixed> | mixed;
+
+  declare export class Bench extends EventTarget {
+    concurrency: null | 'task' | 'bench';
+    name?: string;
+    opts: $ReadOnly<BenchOptions>;
+    threshold: number;
+
+    constructor(options?: BenchOptions): this;
+
+    // $FlowExpectedError[unsafe-getters-setters]
+    get results(): Array<$ReadOnly<TaskResult>>;
+
+    // $FlowExpectedError[unsafe-getters-setters]
+    get tasks(): Array<Task>;
+
+    add(name: string, fn: Fn, fnOpts?: FnOptions): this;
+    getTask(name: string): void | Task;
+    remove(name: string): this;
+    reset(): void;
+    run(): Promise<Array<Task>>;
+    runSync(): Array<Task>;
+    table(
+      convert?: (task: Task) => Record<string, void | string | number>,
+    ): void | Array<Record<string, void | string | number>>;
+  }
+}

package.json

@@ -102,6 +102,7 @@
     "shelljs": "^0.8.5",
     "signedsource": "^1.0.0",
     "supports-color": "^7.1.0",
+    "tinybench": "^3.1.0",
     "typescript": "5.0.4",
     "ws": "^6.2.3"
   },

yarn.lock

@@ -8348,6 +8348,11 @@ tiny-invariant@^1.3.3:
   resolved "https://registry.yarnpkg.com/tiny-invariant/-/tiny-invariant-1.3.3.tgz#46680b7a873a0d5d10005995eb90a70d74d60127"
   integrity sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==
 
+tinybench@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/tinybench/-/tinybench-3.1.0.tgz#ec68451ff05233cf3de12c46f39f06011897109a"
+  integrity sha512-Km+oMh2xqNCxuyoUsqbRmHgFSd8sATh7v7xreP+kHN6x67w28Pawr83WmBxcaORvxkc0Ex6zgqK951yBnTFaaQ==
+
 tmp@^0.0.33:
   version "0.0.33"
   resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"