问题描述
更新项目依赖项后，我开始遇到错误. Browserify在解析用ES6编写的JS代码时遇到问题. Browserify似乎期望使用ES5.
After updating the project dependencies I started facing the error. Browserify has problem parsing my JS code, which is written in ES6. Browserify seems to expect ES5.
我不明白，为什么sourceType: module似乎是这里的问题.
I don't understand, why the sourceType: module seems to be the issue here.
来源:
var babelify = require('babelify');
var browserify = require('browserify-middleware');
var keystone = require('keystone');
var importRoutes = keystone.importer(__dirname);
// Setup Route Bindings
exports = module.exports = function(app) {
app.use('/js', browserify('./client/scripts', {
transform: [babelify.configure({
extensions: ['es6'],
plugins: ['object-assign']
})]
}));
};
当从上面的代码中省略babelify时，也会发生同样的情况:
The same happens, when omitting babelify from the code above:
var browserify = require('browserify-middleware');
var keystone = require('keystone');
var importRoutes = keystone.importer(__dirname);
// Setup Route Bindings
exports = module.exports = function(app) {
app.use('/js', browserify('./client/scripts'));
};
服务器控制台:
GET /js/Application.js 500 61.176 ms
Error thrown for request: /js/Application.js
Error: Parsing file /home/user/project/client/scripts/Application.js: 'import' and 'export' may appear only with 'sourceType: module' (1:0)
at Deps.parseDeps (/home/user/project/node_modules/module-deps/index.js:454:28)
at fromSource (/home/user/project/node_modules/module-deps/index.js:391:44)
at /home/user/project/node_modules/module-deps/index.js:385:17
at ConcatStream.<anonymous> (/home/user/project/node_modules/concat-stream/index.js:36:43)
at emitNone (events.js:91:20)
at ConcatStream.emit (events.js:185:7)
at finishMaybe (/home/user/project/node_modules/concat-stream/node_modules/readable-stream/lib/_stream_writable.js:475:14)
at endWritable (/home/user/project/node_modules/concat-stream/node_modules/readable-stream/lib/_stream_writable.js:485:3)
at ConcatStream.Writable.end (/home/user/project/node_modules/concat-stream/node_modules/readable-stream/lib/_stream_writable.js:455:41)
at DuplexWrapper.onend (/home/user/project/node_modules/readable-stream/lib/_stream_readable.js:504:10)
at DuplexWrapper.g (events.js:291:16)
at emitNone (events.js:91:20)
at DuplexWrapper.emit (events.js:185:7)
at endReadableNT (/home/user/project/node_modules/readable-stream/lib/_stream_readable.js:926:12)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickCallback (internal/process/next_tick.js:98:9)
推荐答案
问题只是extensions: ['es6']中的值不正确，需要的是将JS文件的实际扩展名放置为extensions: ['.js'].
The problem was just with incorrect value in extensions: ['es6'], what was needed was to put the actual extension of the JS files extensions: ['.js'].
工作代码:
var babelify = require('babelify');
var browserify = require('browserify-middleware');
var keystone = require('keystone');
var importRoutes = keystone.importer(__dirname);
// Setup Route Bindings
exports = module.exports = function(app) {
app.use('/js', browserify('./client/scripts', {
transform: [babelify.configure({
extensions: ['.js'],
plugins: ['object-assign']
})]
}));
};
这篇关于Keystone + React:“导入"和“导出"可能仅与"sourceType:模块"一起出现的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！