jzhw_uni/lib/vant-weapp/wxs/bem.sjs

var array = require("./array.sjs");
var object = require("./object.sjs");
var PREFIX = 'van-';
function join(name, mods) {
  name = PREFIX + name;
  mods = mods.map(function (mod) {
    return name + '--' + mod;
  });
  mods.unshift(name);
  return mods.join(' ');
}
function traversing(mods, conf) {
  if (!conf) {
    return;
  }
  if (typeof conf === 'string' || typeof conf === 'number') {
    mods.push(conf);
  } else if (array.isArray(conf)) {
    conf.forEach(function (item) {
      traversing(mods, item);
    });
  } else if (typeof conf === 'object') {
    object.keys(conf).forEach(function (key) {
      conf[key] && mods.push(key);
    });
  }
}
function bem(name, conf) {
  var mods = [];
  traversing(mods, conf);
  return join(name, mods);
}
module.exports.bem = bem;