问题描述
在web storm（idea也类似）在使用mocha（jest等其他框架也类似）中使用es6语法，无法通过测试，会报错。本文对此问题进行配置解决。
//报错形式如下
import assert from "assert";
^^^^^^
SyntaxError: Cannot use import statement outside a module
at wrapSafe (internal/modules/cjs/loader.js:1116:16)
at Module._compile (internal/modules/cjs/loader.js:1164:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1220:10)
at Module.load (internal/modules/cjs/loader.js:1049:32)
at Function.Module._load (internal/modules/cjs/loader.js:937:14)
at Module.require (internal/modules/cjs/loader.js:1089:19)
at require (internal/modules/cjs/helpers.js:73:18)
at Object.exports.requireOrImport (/home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/lib/esm-utils.js:20:12)
at Object.exports.loadFilesAsync (/home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/lib/esm-utils.js:33:34)
at Mocha.loadFilesAsync (/home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/lib/mocha.js:421:19)
at singleRun (/home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/lib/cli/run-helpers.js:156:15)
at exports.runMocha (/home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/lib/cli/run-helpers.js:225:10)
at Object.exports.handler (/home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/lib/cli/run.js:366:11)
at /home/chriego/Projects/personal/my-project/frontend/node_modules/mocha/node_modules/yargs/lib/command.js:241:49
Process finished with exit code 1
解决方法
- 全局安装
npm install --save-dev babel-core babel-preset-es2015
- 配置.babelrc
//.babelrc
{
"presets": [ "es2015" ]
}
- 菜单 -> Run -> Edit Configurations
- 添加Extra Mocha options
--compilers js:babel-core/register
Apply后生效
以上。
