cfc/cfc-frontend/scripts/check-style-langs.js

#!/usr/bin/env node
const fs = require('fs');
const path = require('path');

function walk(dir, out = []) {
  for (const name of fs.readdirSync(dir)) {
    if (['node_modules', 'dist', 'unpackage', '.git', 'docs'].includes(name)) continue;
    const p = path.join(dir, name);
    const st = fs.statSync(p);
    if (st.isDirectory()) walk(p, out);
    else if (name.endsWith('.vue')) out.push(p);
  }
  return out;
}

const files = walk('.');
let scss = 0, cssAttr = 0, noLang = 0;
const noLangSamples = [];
for (const f of files) {
  const src = fs.readFileSync(f, 'utf8');
  const re = /<style([^>]*)>/gi;
  let m;
  while ((m = re.exec(src))) {
    const attrs = m[1];
    if (/lang=["']scss["']/i.test(attrs)) scss++;
    else if (/lang=["']/i.test(attrs)) cssAttr++;
    else {
      noLang++;
      if (noLangSamples.length < 20) noLangSamples.push(path.relative('.', f));
    }
  }
}
console.log('scss blocks:', scss, '| lang=css blocks:', cssAttr, '| no-lang blocks:', noLang);
if (noLangSamples.length) {
  console.log('--- no-lang sample ---');
  console.log(noLangSamples.join('\n'));
}