string-width_slowness_bench.js

string-width_slowness_bench.js

/* IMPORT */

import benchmark from 'benchloop';
import stringWidth from 'string-width';
// import fastStringWidth from '../dist/index.js';

/* HELPERS */

const IMPLEMENTATIONS = [
  // [Bun.stringWidth, 'bun'],
  [stringWidth, 'string-width'],
  // [fastStringWidth, 'fast-string-width']
];

const INPUTS = [
  ['hello', 'ascii'],
  ['\x1b[31mhello', 'ascii+ansi'],
  ['hello😀', 'ascii+emoji'],
  ['\x1b[31m😀😀', 'ansi+emoji'],
  ['😀hello😀\x1b[31m😀😀😀', 'ascii+ansi+emoji']
];

const REPETITIONS = [1, 10, 100, 1_000, 5_000, 25_000];

/* MAIN */

benchmark.config ({
  iterations: 1
});

for ( const [implementation, implementationName] of IMPLEMENTATIONS ) {

  benchmark.group ( implementationName, () => {

    for ( const [input, inputName] of INPUTS ) {

      for ( const repetitions of REPETITIONS ) {

        const string = input.repeat ( repetitions );

        benchmark ({
          name: `${inputName}x${repetitions}`,
          fn: () => {
            implementation ( string );
          }
        });

      }

    }

  });

}

benchmark.summary ();