[英]Import from node_modules not recognized in es6 modules in browser
[英]Typescript: es6 import type definition (.d.ts) from node_modules subfolder
我有一个 npm package 具有以下类型定义(简化):
./node_modules/ag-grid-react/main.d.ts
export declare class AgGridReact extends Component<AgGridReactProps, {}> {}
./node_modules/ag-grid-react/lib/agGridReact.d.ts
export declare class AgGridReact extends Component<AgGridReactProps, {}> {
gridOptions: GridOptions;
api: GridApi | null;
columnApi: ColumnApi;
}
我在我的反应组件中使用该组件,如下所示:
import { AgGridReact } from 'ag-grid-react'
const HelpRequests= () => {
const grid = useRef<AgGridReact>(null)
if (grid.current) console.log(grid.current.columnApi)
return (<AgGridReact ref={grid}/>)
}
问题:
Typescript 确实抱怨没有 columnApi。 可悲的是,它似乎从 main.d.ts 中选择了错误的类型
我发现我可以直接从 agGridReact.d.ts 导入类型并像这样使用它:
import {AgGridReact as AgGridReactType} from 'ag-grid-react/lib/agGridReact'
...
const grid = useRef<AgGridReactType>(null)
问题:
这是解决此问题的正确方法吗? typescript 是否足够聪明,不会导入./node_modules/ag-grid-react/lib/agGridReact.ts文件,这可能会导致我的包大小增加到 go ?
我进行了很多搜索,但找不到有关仅从 node_modules 子文件夹导入类型的任何信息。
我将尝试回答这个问题:
假设有一个xyz
库,它有以下文件:
xyz/lib/main.ts:
export const test = 1000
和
xyz/main.ts:
export * from './lib/main.ts'
export const test = 'foo bar'
我想在我的app.ts中使用xyz
,我只知道它的main.ts文件,因为我认为它是从库中导出所有内容的主文件。 所以我最有可能这样做:
应用程序.ts:
import { test } from './xyz/main'
console.debug(test) // it will print 'foo bar'
现在,有人在库中评论这一行:
xyz/main.ts:
export * from './lib/main.ts'
// export const test = 'foo bar'
现在,我的app.ts将打印什么? 它将打印1000
。
同样的事情也发生在ag-grid-react
那里。 它( ag-grid-react/main.d.ts )覆盖了ag-grid-react/lib/agGridReact.d.ts中明显正确(更好)的 class 声明。 从内部路径导入是完全可以的。
main.d.ts:
export * from './lib/agGridReact'; // it is exporting from innner path too
export declare class AgGridColumn extends Component<AgGridColumnProps | AgGridColumnGroupProps, {}> { // and overriding here at the same time
}
agGridReact.d.ts:
export declare class AgGridReact extends Component<AgGridReactProps, {}> {
props: any;
state: any;
static propTypes: any;
gridOptions: GridOptions;
changeDetectionService: ChangeDetectionService;
api: GridApi | null;
columnApi: ColumnApi;
portals: ReactPortal[];
hasPendingPortalUpdate: boolean;
destroyed: boolean;
protected eGridDiv: HTMLElement;
private static MAX_COMPONENT_CREATION_TIME;
constructor(props: any, state: any);
render(): React.ReactElement<any, string | ((props: any) => React.ReactElement<any, string | any | (new (props: any) => React.Component<any, any, any>)>) | (new (props: any) => React.Component<any, any, any>)>;
createStyleForDiv(): any;
componentDidMount(): void;
waitForInstance(reactComponent: ReactComponent, resolve: (value: any) => void, runningTime?: number): void;
mountReactPortal(portal: ReactPortal, reactComponent: ReactComponent, resolve: (value: any) => void): void;
batchUpdate(callback?: any): any;
destroyPortal(portal: ReactPortal): void;
private getStrategyTypeForProp;
shouldComponentUpdate(nextProps: any): boolean;
componentDidUpdate(prevProps: any): void;
processPropsChanges(prevProps: any, nextProps: any): void;
private extractDeclarativeColDefChanges;
private extractGridPropertyChanges;
componentWillUnmount(): void;
isDisableStaticMarkup(): boolean;
}
我不能确切地说为什么ag-grid
。 我在查看打字文件时发现了这一点。 我也可能不正确。
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