if you want to add a version to the project, the json that is replaced with gulp-rev generation is always generated only two corresponding css

/ 
function getDistFolder(distPath) {
  return `${distFolder}/${distPath}`;
}

// -----------
// LESS 
// -----------

// LESS 
function compileLess(input, base, output, watch, min, sourcemaps) {
  return gulp.src(input, {base: base})
    .pipe($.plumber())
    .pipe(watch ? $.watch(input, {base: base}) : noop())
    .pipe(watch || !!argv.using ? $.using({prefix: "Using less"}) : noop())
    .pipe(sourcemaps ? $.sourcemaps.init() : noop())
    .pipe($.less())
    .pipe(min ? $.cleanCss() : noop())
    .pipe(sourcemaps ? $.sourcemaps.write() : noop())
    .pipe($.rev())
    .pipe(gulp.dest(output)) 
    .pipe($.rev.manifest())
    .pipe(gulp.dest(output)) 
}

function compRev(output, distPath) {  
  return gulp.src([output + "/*.json", distPath + "/**/**/*.html"])
  .pipe(revCollector({
      replaceReved: true
  }))
  .pipe(gulp.dest(distPath));
}

gulp.task("admin:rev", function () {
  log("");
  return compRev(getDistFolder("admin/css"), getDistFolder("admin"));
});
gulp.task("school:rev", function () {
  return compRev(getDistFolder("school/css"), getDistFolder("school"));
});
gulp.task("oss:rev", function () {
  return compRev(getDistFolder("oss/css"), getDistFolder("oss"));
});

//  bootstrap
gulp.task("less:bootstrap:admin", () => {
  return compileLess(resetPath(src.less.bootstrap, "admin"), "", getDistFolder("admin/css"), false, !!argv.min, !!argv.sourcemaps);
});
gulp.task("less:bootstrap:school", () => {
  return compileLess(resetPath(src.less.bootstrap, "school"), "", getDistFolder("school/css"), false, !!argv.min, !!argv.sourcemaps);
});
gulp.task("less:bootstrap:oss", () => {
  return compileLess(resetPath(src.less.bootstrap, "oss"), "", getDistFolder("oss/css"), false, !!argv.min, !!argv.sourcemaps);
});

//  bootstrap
gulp.task("watch:bootstrap:admin", () => {
  gulp.watch(resetPath(src.less.bootstrapWatch, "admin"), ["less:bootstrap:admin"]);
});
gulp.task("watch:bootstrap:school", () => {
  gulp.watch(resetPath(src.less.bootstrapWatch, "school"), ["less:bootstrap:school"]);
});
gulp.task("watch:bootstrap:oss", () => {
  gulp.watch(resetPath(src.less.bootstrapWatch, "oss"), ["less:bootstrap:oss"]);
});

//  app.css
gulp.task("less:common:admin", () => {
  return compileLess(resetPath(src.less.common, "admin"), "", getDistFolder("admin/css"), false, !!argv.min, !!argv.sourcemaps);
});
gulp.task("less:common:school", () => {
  return compileLess(resetPath(src.less.common, "school"), "", getDistFolder("school/css"), false, !!argv.min, !!argv.sourcemaps);
});
gulp.task("less:common:oss", () => {
  return compileLess(resetPath(src.less.common, "oss"), "", getDistFolder("oss/css"), false, !!argv.min, !!argv.sourcemaps);
});

Project path