我有一个简单的类,需要使用Jest进行测试。我正在使用的项目的babel配置-
Babel版本-7
{
"plugins": [
"@babel/plugin-transform-react-jsx",
"@babel/plugin-proposal-function-bind",
"@babel/plugin-transform-modules-commonjs",
"@babel/plugin-syntax-dynamic-import",
"@babel/plugin-proposal-object-rest-spread",
"@babel/plugin-transform-classes",
[
"@babel/plugin-proposal-class-properties",
{
"loose": true
}
],
[
"@babel/plugin-proposal-decorators",
{
"legacy": true
}
],
[
"@babel/plugin-transform-runtime",
{
"regenerator": true
}
]
],
"presets": ["@babel/preset-env", "@babel/react"]
}
我遇到错误-
SyntaxError: Missing class properties transform.
5 |
6 | export default class Template {
> 7 | id;
所以,我找出了问题@ babel / plugin-proposal-decorators应该在@ babel / plugin-proposal-class-properties之前出现
{
"presets": ["@babel/preset-env"],
"plugins": [
["@babel/plugin-transform-react-jsx"],
"@babel/plugin-transform-modules-commonjs",
"@babel/plugin-syntax-dynamic-import",
"@babel/plugin-proposal-object-rest-spread",
"@babel/plugin-proposal-function-bind",
[
"@babel/plugin-proposal-decorators",
{
"legacy": true
}
],
"@babel/plugin-proposal-class-properties"
]
}