gulp-less插件用来将less代码转换成CSS代码。

gulp-less在GitHub上的网址：https://github.com/plus3network/gulp-less

const gulp = require('gulp');
const less = require('gulp-less');

gulp.task("default", function() {
    gulp.src('./src/public/less/**/*.less')
        .pipe(less())
        .pipe(gulp.dest('./build/public/css/'));
});