我对ES6 / grunt / browserify相对较新,并尝试使用构建任务和文件观察器设置一个简单的项目。我尝试了几个选项,我总是得到不同的错误。
选项1:
的package.json
{
"name": "browserify-babel-demo",
"version": "1.0.0",
"main": "dist/module.js",
"dependencies": {},
"devDependencies": {
"babelify": "^7.2.0",
"grunt": "^0.4.5",
"grunt-browserify": "^4.0.1",
"grunt-contrib-clean": "^0.7.0",
"grunt-contrib-watch": "^0.6.1"
}
}
Gruntfile.js
module.exports = function (grunt) {
grunt.initConfig({
browserify: {
dist: {
options: {
transform: ["babelify"]
},
files: {
"./dist/module.js": ["./modules/index.js"]
}
}
},
watch: {
scripts: {
files: ["./modules/*.js"],
tasks: ["browserify"]
}
}
});
grunt.loadNpmTasks("grunt-browserify");
grunt.loadNpmTasks("grunt-contrib-watch");
grunt.registerTask("default", ["watch"]);
grunt.registerTask("build", ["browserify"]);
};
imports.js
var sum = (a, b = 6) => (a + b);
var square = (b) => {
return b * b;
};
var variable = 8;
class MyClass {
constructor(credentials) {
this.name = credentials.name;
this.enrollmentNo = credentials.enrollmentNo
}
getName() {
return this.name;
}
}
export { sum, square, variable, MyClass };
index.js
import {sum, square, variable, MyClass} from './import.js';
console.log(square(5));
var cred = {
name: 'ABCD',
enrollmentNo: 11115078
}
var x = new MyClass(cred);
console.log(x.getName());
错误:
2015年12月30日星期三09:33:15 GMT + 1100(澳大利亚东部夏令时间)完成3.552秒 - 等待... 文件“modules \ index.js”已更改。 运行“browserify:dist”(browserify)任务 C:\ Users \用户pavan.kumar \ WebstormProjects \ BaseModuleSetup \模块\ index.js:1 从'./import.js'导入{sum,square,variable,MyClass}; ^ ParseError:'import'和'export'可能只出现'sourceType:module' 警告:运行grunt-browserify时出错。使用--force继续。
因警告而中止。 2015年12月30日星期三09:34:12 GMT + 1100(澳大利亚东部夏令时间)完成3.732秒 - 等待......
选项2:
的package.json
{
"name": "browserify-babel-demo",
"version": "1.0.0",
"main": "dist/module.js",
"dependencies": {},
"devDependencies": {
"babelify": "^7.2.0",
"grunt": "^0.4.5",
"grunt-browserify": "^4.0.1",
"grunt-contrib-clean": "^0.7.0",
"grunt-contrib-watch": "^0.6.1"
}
}
Gruntfile.js
module.exports = function (grunt) {
grunt.initConfig({
browserify: {
dist: {
options: {
transform: [
["babelify", {
loose: "all"
}]
]
},
files: {
// if the source file has an extension of es6 then
// we change the name of the source file accordingly.
// The result file's extension is always .js
"./dist/module.js": ["./modules/index.js"]
}
}
},
watch: {
scripts: {
files: ["./modules/*.js"],
tasks: ["browserify"]
}
}
});
grunt.loadNpmTasks("grunt-browserify");
grunt.loadNpmTasks("grunt-contrib-watch");
grunt.registerTask("default", ["watch"]);
grunt.registerTask("build", ["browserify"]);
};
import.js和index.js与上面相同!
错误:
运行“观察”任务 等候... 文件“modules \ index.js”已更改。 运行“browserify:dist”(browserify)任务 ReferenceError:[BABEL] C:\ Users \ pavan.kumar \ WebstormProjects \ BaseModuleSetup \ modules \ index.js:未知选项:base.loose 解析文件时:C:\ Users \ pavan.kumar \ WebstormProjects \ BaseModuleSetup \ modules \ index.js 警告:运行grunt-browserify时出错。使用--force继续。
因警告而中止。 2015年12月30日星期三09:58:14 GMT + 1100(澳大利亚东部夏令时间)完成3.365秒 - 等待......
不确定为什么它不起作用!
感谢您的帮助!
更新1:
根据其中一位评论者提供的反馈添加了名为.babelrc的新文件。点击此链接Babel file is copied without being transformed
.babelrc
{
"presets": [
"es2015"
]
}
的package.json
{
"name": "browserify-babel-demo",
"version": "1.0.0",
"main": "dist/module.js",
"dependencies": {
"babel-preset-es2015": "^6.3.13"
},
"devDependencies": {
"babelify": "^7.2.0",
"grunt": "^0.4.5",
"grunt-browserify": "^4.0.1",
"grunt-contrib-clean": "^0.7.0",
"grunt-contrib-watch": "^0.6.1"
}
}
错误:两个选项都与上面相同!需要一些指导
答案 0 :(得分:2)
经过痛苦的重试,并根据链接https://github.com/babel/babelify/issues/129中给出的建议,我可以稍作修改。我正在撰写此回复,以便其他人在将来轻松解决!
Gruntfile.js
module.exports = function (grunt) {
grunt.initConfig({
"browserify": {
dist: {
options: {
transform: ["babelify"]
},
files: {
"./dist/module.js": ["./modules/index.js"]
}
}
},
"babel": {
"presets": ["react"]
},
watch: {
scripts: {
files: ["./modules/*.js"],
tasks: ["browserify"]
}
}
});
grunt.loadNpmTasks("grunt-browserify");
grunt.loadNpmTasks("grunt-contrib-watch");
grunt.registerTask("default", ["watch"]);
grunt.registerTask("build", ["browserify"]);
};