Use import-lazy for rules

[XhmikosR]

C:\Users\xmr\Desktop\stylelint-scss>git checkout master
Switched to branch 'master'
Your branch is up to date with 'origin/master'.

C:\Users\xmr\Desktop\stylelint-scss>hyperfine "node load-time.js"
Benchmark 1: node load-time.js
  Time (mean ± σ):     174.5 ms ±   3.7 ms    [User: 0.8 ms, System: 2.5 ms]
  Range (min … max):   171.1 ms … 185.3 ms    17 runs

C:\Users\xmr\Desktop\stylelint-scss>git checkout -
Switched to branch 'xmr/import-lazy'

C:\Users\xmr\Desktop\stylelint-scss>hyperfine "node load-time.js"
Benchmark 1: node load-time.js
  Time (mean ± σ):     123.5 ms ±   5.9 ms    [User: 2.5 ms, System: 2.9 ms]
  Range (min … max):   116.4 ms … 140.6 ms    23 runs

load-time.js:

"use strict";

console.log("Load time");
console.time("Module");

exports.m = require(".");

console.timeEnd("Module");

Approximately 28% faster load time on my machine.

[kristerkari]

The only doubt that I have is the import-lazy library. Is it safe to use and still maintained (as the last version is from 2019)?

[XhmikosR]

The dep is OK, it's just that people move to ESM so there's no need to update it. Stylelint itself is using the same dep for the same reason.

[ybiquitous]

FYI. Stylelint has replaced import-lazy with dynamic import() (stylelint/stylelint@aa9be6f). This commit will be included in the next major version 16.0.0.