设置环境变量启动mocha

使用mocha测试含有es6 modules的代码是，需要使用babel-register来转化语法。babel-register跟项目中web端的项目共享同一份.babelrc。如下：{ “presets”: [ [ “env”, { “modules”: false, “targets”: { “browsers”: [ “> 1%”, “last 2 versions”, “not ie <= 8” ] } } ], “stage-2” ], “plugins”: [ “transform-vue-jsx”, “transform-runtime” ], “env”: { “test” : { “presets”: [“env”, “stage-2”] } }}在windows powershell 中：set BABEL_ENV=test | mocha –rquire babel-register 这里要注意的是powershell中的管理命令连接符是 | ，而不是&&在mocha的issue中，有一个是希望加入–env标志，但tj大神直接说不需要， 你干嘛不set xxx_env && mocha.底下也有人给了另外的解决办法Since this still seems to get a lot of traffic I thought I would throw out a relatively simply solution for people like me who wish there was a –env flag.What I’ve been doing is add a test/mocha.env.js file in the repo, and then add –require test/mocha.env.js to mocha.opts:// mocha.opts–require babel-register–require test/mocha.env.js–timeout 60000// mocha.env.jsprocess.env.NODE_ENV = ’test';