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