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我们在项目中尝试使用es6/7语法编写模块,如
define(function(){
var func2 = function(){
return new Promise((reslove)=>{
setTimeout(function(){
reslove(10);
},1000)
})
}
var func1 = async function(){
var a = await func2();
return a;
}
func1();
})babel编译后
"use strict";
function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }
define(function () {
var func2 = function func2() {
return new Promise(function (reslove) {
setTimeout(function () {
reslove(10);
}, 1000);
});
};
var func1 = function () {
var _ref = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee() {
var a;
return regeneratorRuntime.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
_context.next = 2;
return func2();
case 2:
a = _context.sent;
return _context.abrupt("return", a);
case 4:
case "end":
return _context.stop();
}
}
}, _callee, this);
}));
return function func1() {
return _ref.apply(this, arguments);
};
}();
func1();
});在这个地方babel生成了一个函数_asyncToGenerator,附在模块外面。如果使用nej打包工具,这段函数_asyncToGenerator会被删除,对比了其他打包工具webpack以及require.js的r.js,是不会去删除该函数的,请问有什么方法能解决吗
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