直接上源码：
'use strict';
/**
* 初始化helper
*/
const path = require('path');
const fs = require('fs');
const Handlebars = require('handlebars');
const handlebarsLayouts = require('./handlebars-layouts');
const recursive = require('recursive-readdir');
const log = require('./log');
/**
* 初始化项目模板helper
* @param {String} appDir 项目目录
* @param {Object} config 配置
* @return {Object} Promise对象
*/
module.exports = function(appDir, config) {
log.info('开始初始化项目helper');
const viewDir = path.join(__dirname, '../views');
const helperDir = path.join(__dirname, '../helpers/');
log.info('开始初始化helper-layout');
// handlebarsLayouts.register(Handlebars);
handlebarsLayouts.register(Handlebars, {
suffix: 'html',
extendDir: [path.join(__dirname, '../views/partials/'), path.join(viewDir, '../views/components/')]
});
log.success('初始化helper-layout成功');
// 自定义helper扩展
if (fs.existsSync(helperDir)) {
log.info('查询到handlebars自定义helper文件夹,开始解析');
// 自定义方法
recursive(helperDir, function (err, files) {
if(err) {
log.error('查询handlebars自定义helper错误');
return reject(err);
}
files.forEach(function(filePath) {
const helper = require(filePath);
if(typeof helper === 'function') {
Handlebars.registerHelper(helper(Handlebars));
}
else Handlebars.registerHelper(helper);
});
});
}else{
log.info('没有handlebars自定义helper文件夹,被略过');
}
log.success('初始化自定义helper成功');
};