Dru*_*tan 32 javascript gruntjs babeljs
我正在尝试使用Babel,但它对我来说效果不佳.
我的项目很简单
|-project/
|---src/
|-----index.html
|-----main.js
|-----module.js
|---Gruntfile.js
|---package.json
的index.html
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Test</title>
<script src="main.js" type="application/javascript"></script>
</head>
<body>
<p>Simple html file.</p>
</body>
</html>
main.js
import * as math from "./module";
async function anwser() {
return 42;
}
(function main() {
anwser().then((v) => {
console.info(v);
});
console.log(math.sum(5, 5));
})();
module.js
export function sum(x, y) {
return x + y;
}
Gruntfile.js
module.exports = function(grunt) {
grunt.initConfig({
"babel": {
"options": {
"sourceMap": true,
"experimental": true
},
dist: {
files: [{
"expand": true,
"cwd": "src/",
"src": ["**/*.js"],
"dest": "build/",
"ext": ".js"
}]
}
},
htmlmin: {
dist: {
options: {
removeComments: true,
collapseWhitespace: true
},
files: [{
"expand": true,
"cwd": "src/",
"src": ["**/*.html"],
"dest": "build/",
"ext": ".html"
}]
}
},
watch: {
scripts: {
files: 'src/*.js',
tasks: ["babel"]
},
html: {
files: 'src/*.html',
tasks: ["htmlmin"]
}
}
});
grunt.loadNpmTasks('grunt-babel');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-htmlmin');
grunt.registerTask("default", ["babel", "htmlmin"]);
};
我运行咕噜声,一切都编译.但我不能使用有预期的结果.
首先,浏览器说require is not defined,所以我将require.js添加到我的HTML中.
然后,我明白了 Error: Module name "module" has not been loaded yet for context: _. Use require([]) http://requirejs.org/docs/errors.html#notloaded
我对所有这些都有些困惑.我如何使我的代码工作？
Xåp*_* - 28
要扩展veg_prog的答案,如果要将代码组织到模块中,则应使用类似Browserify的内容.Browserify可以通过grunt- browserify与Grunt一起使用,Babel可以通过babelify与Browserify一起使用.
我已经调整了一些文件来向您展示如何完成它:
的index.html
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Test</title>
<script src="bundle.js" type="application/javascript"></script>
</head>
<body>
<p>Simple html file.</p>
</body>
</html>
main.js
import "babelify/polyfill"; // Needed for Babel's experimental features.
import * as math from "./module";
async function anwser() {
return 42;
}
(function main() {
anwser().then((v) => {
console.info(v);
});
console.log(math.sum(5, 5));
})();
Gruntfile.js
module.exports = function(grunt) {
grunt.initConfig({
browserify: {
dist: {
options: {
transform: [["babelify", { "stage": 0 }]]
},
files: {
"build/bundle.js": "src/main.js"
}
}
},
htmlmin: {
dist: {
options: {
removeComments: true,
collapseWhitespace: true
},
files: [{
"expand": true,
"cwd": "src/",
"src": ["**/*.html"],
"dest": "build/",
"ext": ".html"
}]
}
},
watch: {
scripts: {
files: "src/*.js",
tasks: ["browserify"]
},
html: {
files: "src/*.html",
tasks: ["htmlmin"]
}
}
});
grunt.loadNpmTasks("grunt-browserify");
grunt.loadNpmTasks("grunt-contrib-watch");
grunt.loadNpmTasks("grunt-contrib-htmlmin");
grunt.registerTask("default", ["browserify", "htmlmin"]);
};
的package.json
{
"devDependencies": {
"babelify": "6.0.1",
"grunt": "0.4.5",
"grunt-browserify": "3.6.0",
"grunt-contrib-htmlmin": "0.4.0",
"grunt-contrib-watch": "0.6.1"
}
}
Nie*_*eek 13
Babel默认使用'common'.这对requirejs不起作用.所以,将模块更改为'amd'.
"babel": {
"options": {
"sourceMap": true,
"experimental": true,
"modules": "amd" //This is the line to be added.
},
dist: {
files: [{
"expand": true,
"cwd": "src/",
"src": ["**/*.js"],
"dest": "build/",
"ext": ".js"
}]
}
}
Babel6的更新.另见http://babeljs.io/docs/plugins/transform-es2015-modules-amd/ 和https://babeljs.io/docs/plugins/
"babel": {
"options": {
"sourceMap": true,
"experimental": true,
"plugins": ["transform-es2015-modules-amd"] //This is the line to be added.
},
dist: {
files: [{
"expand": true,
"cwd": "src/",
"src": ["**/*.js"],
"dest": "build/",
"ext": ".js"
}]
}
}
小智 8
首先,浏览器说require没有定义,所以我将require.js添加到我的HTML中.
我不认为,添加require.js将是解决方案.在此上下文中,require是节点式语法:(https://github.com/substack/browserify-handbook#user-content-require).
Browserify是一个模块加载器,但与requirejs不同.requirejs也有一个babel发行版(https://github.com/mikach/requirejs-babel),但我建议使用browserify.
在一个设置中,babel正在使用browserify,就像这样
import $ from'jquery';
将成为这样的事情
var $ = require('jquery');
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