jspm / jQuery / TypeScript - 模块“jquery”没有默认导出

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时间:2020-10-21 03:15:27  来源:igfitidea点击:

jspm / jQuery / TypeScript - module "jquery" has no default export

javascriptjquerytypescriptsystemjsjspm

提问by user888734

I'm trying to bootstrap a web app using TypeScript and jspm & system.js for module loading. I'm not getting very far. After installing jspm, and using it to install jQuery:

我正在尝试使用 TypeScript 和 jspm & system.js 来引导 Web 应用程序以进行模块加载。我不会走得很远。安装 jspm 后,并使用它来安装 jQuery:

jspm install jquery

And the basics:

以及基础知识:

<script src="jspm_packages/system.js"></script>
<script src="config.js"></script>
<script>
        System.import('main');
</script>

main.ts:

main.ts:

import $ from "jquery";

export class Application  {
    constructor() {
        console.log($);
    }
}

The TypeScript won't compile because "Module 'jquery' has no default export.

TypeScript 无法编译,因为“模块‘jquery’没有默认导出。

The generated config.js has the correct mapping: "jquery": "npm:[email protected]"

生成的 config.js 具有正确的映射: "jquery": "npm:[email protected]"

回答by Bob Sponge

When the module doesn't have a default export, you can import the complete module as object: import * as $ from "jquery";

当模块没有默认导出时,您可以将完整模块作为对象导入: import * as $ from "jquery";

or import named exports: import { ajax, css } from "jquery";

或导入命名导出: import { ajax, css } from "jquery";

回答by Daniel

If you are using visual studio, update the typescript plugin.

如果您正在使用visual studio,请更新打字稿插件。

To obtain the latest version for visual studio 2017, go there

要获取 Visual Studio 2017 的最新版本,请访问