我目前正在尝试为ReactJ建立一个州管理库。但是,一旦我将其实施到我的React项目中(创建create-react-app
),它开始删除此错误:
Failed to compile.
path/to/agile/dist/runtime.js 116:104
Module parse failed: Unexpected token (116:104)
File was processed with these loaders:
* ./node_modules/babel-loader/lib/index.js
You may need an additional loader to handle the result of these loaders.
| if (subscriptionContainer instanceof sub_1.CallbackContainer) subscriptionContainer.callback(); // If Component based subscription call the updateMethod which every framework has to define
|
> if (subscriptionContainer instanceof sub_1.ComponentContainer) if (this.agileInstance.integration?.updateMethod) this.agileInstance.integration?.updateMethod(subscriptionContainer.component, Runtime.formatChangedPropKeys(subscriptionContainer));
| }); // Log Job
|
如果我评论错误中提到的突出显示的代码行,它将跳到另一点并在那里抱怨。但这不是语法错误,因为当时的TypeScript也会在IDE中抱怨。
How the tool works: 一开始,您必须定义一个框架,在这种情况下,react。然后,您可以创建一个状态并通过钩子订阅该状态为react功能组件。用于将状态结合到react组件的钩子简单地创建一个触发重新渲染的回调(通过突变useReducer
) 并将此回调分配给订阅的 State。
如果您想了解更多查看此存储库:https://github.com/agile-ts/agile
Dependencies:
第三方国家管理库:
"dependencies": {
"@types/chai": "^4.2.12",
"@types/mocha": "^8.0.2",
"chai": "^4.2.0",
"eslint-config-prettier": "^6.11.0",
"mocha": "^8.1.1",
"prettier": "2.0.5",
"ts-node": "^8.10.2",
"tsc-watch": "^4.1.0",
"tslib": "^2.0.0",
"typescript": "^3.9.7"
}
- 节点:
v14.8.0
React项目:
"dependencies": {
"@testing-library/jest-dom": "^4.2.4",
"@testing-library/react": "^9.3.2",
"@testing-library/user-event": "^7.1.2",
"@types/jest": "^24.0.0",
"@types/node": "^12.0.0",
"@types/react": "^16.9.0",
"@types/react-dom": "^16.9.0",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-scripts": "3.4.3",
"typescript": "~3.7.2",
"agile-framework": "file:../../"
},
- react:
16.13.1
- NPM:
6.14.7
答案
问题是您将ES2020发射到dist/
。如果您看线路,它会抱怨:
if (subscriptionContainer instanceof sub_1.ComponentContainer) if (this.agileInstance.integration?.updateMethod) this.agileInstance.integration?.updateMethod(subscriptionContainer.component, Runtime.formatChangedPropKeys(subscriptionContainer));
// ^^ // ^^
您可以看到它正在使用可选的链接运算符在发射代码中。因此,库的消费者将需要具有适当的配置来处理这种代码。您的示例消费者CRA应用程序正在使用Babel;虽然设置做 具有可选链接的转换,它仅在React App本身的源代码上运行,不是它的依赖项(包括您的库)。
修复它的一种选择是发射较少的现代代码,这将减少消费者所需的配置量。例如,如果您使用以下设置为目标ES6,则tsconfig.json
:
{
"target": "ES6",
"lib": ["DOM", "ES6", "DOM.Iterable", "ScriptHost", "ES2016.Array.Include"],
// ...
}
React应用程序至少可以启动,而无需更改源代码。