__bench-fn-create-overhead.js

const assert = require("assert");

class V {
  constructor(v) {
    this.v = v;
  }
}

suite("fn-create-overhead", () => {
  const { N = 100000 } = require("./conf");

  before(() => {});

  bench("arrow", () => {
    let i = -1;
    let v = null;

    while (++i < N) {
      const vv = v;
      v = () => vv + 1;
    }
  });

  bench("function", () => {
    let i = -1;
    let v = null;

    while (++i < N) {
      const vv = v;
      v = function() {
        return vv + 1;
      };
    }
  });

  bench("object", () => {
    let i = -1;
    let v = null;

    while (++i < N) v = { v };
  });

  bench("class", () => {
    let i = -1;
    let v = null;

    while (++i < N) v = new V(v);
  });

  bench("inlined class", () => {
    let i = -1;
    let v = null;

    class InlinedV {
      constructor(v) {
        this.v = v;
      }
    }

    while (++i < N) v = new InlinedV(v);
  });
});

_results.txt

fn-create-overhead
  arrow .......................................... 112 op/s
  function ....................................... 145 op/s
  object ......................................... 1,082 op/s
  class .......................................... 1,067 op/s
  inlined class .................................. 300 op/s

Suites:  1
Benches: 5
Elapsed: 4,133.61 ms

conf.js

let N;

if (process.env.BENCH_N) N = process.env.BENCH_N;

if (process.env.TEST) {
  set('type', 'static');
  set('iterations', 1);
  N = 1;
}

module.exports = {
  N
};

package-lock.json

{
  "name": "bench-fn-create-overhead",
  "version": "1.0.0",
  "lockfileVersion": 1,
  "requires": true,
  "dependencies": {
    "drip": {
      "version": "1.1.0",
      "resolved": "https://registry.npmjs.org/drip/-/drip-1.1.0.tgz",
      "integrity": "sha1-zO+x5obYb8EVtwyewSb4+HG9/X4=",
      "dev": true,
      "requires": {
        "tea-concat": "0.1.0"
      }
    },
    "electron": {
      "version": "0.4.1",
      "resolved": "https://registry.npmjs.org/electron/-/electron-0.4.1.tgz",
      "integrity": "sha1-p4oFGniC9OVC1uIH2KGnMHazAUQ=",
      "dev": true,
      "requires": {
        "drip": "1.1.x"
      }
    },
    "matcha": {
      "version": "0.7.0",
      "resolved": "https://registry.npmjs.org/matcha/-/matcha-0.7.0.tgz",
      "integrity": "sha1-E/gFQJs3vlcDLIRYZDvxUjumjdo=",
      "dev": true,
      "requires": {
        "electron": "0.4.x",
        "v8-argv": "0.1.x"
      }
    },
    "tea-concat": {
      "version": "0.1.0",
      "resolved": "https://registry.npmjs.org/tea-concat/-/tea-concat-0.1.0.tgz",
      "integrity": "sha1-6i6QdAD914pjNM4CD6PGlQLZnoQ=",
      "dev": true
    },
    "v8-argv": {
      "version": "0.1.0",
      "resolved": "https://registry.npmjs.org/v8-argv/-/v8-argv-0.1.0.tgz",
      "integrity": "sha1-rfd3pS29w9qciclGXlntXzy22ak=",
      "dev": true
    }
  }
}

package.json

{
  "name": "bench-fn-create-overhead",
  "version": "1.0.0",
  "description": "",
  "main": "__bench-fn-create-overhead.js",
  "scripts": {
    "test": "TEST=1 npm run bench",
    "start": "npm run bench --silent | tee _results.txt",
    "bench": "matcha -R plain *.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "matcha": "^0.7.0"
  }
}