Question

在使用TypeScrpt的Visual Studio 2017 React应用程序中，有一个使用OpenLayers v4.6.5的组件（Map.tsx）。

package.json文件加载@ types / openlayers和“ol”模块。

{
  "name": "mhc-maps",
  "private": true,
  "version": "2.0.0",
  "devDependencies": {
    "@types/history": "^4.6.2",
    "@types/jquery": "^3.3.1",
    "@types/openlayers": "^4.6.9",
    "@types/react": "^16.3.5",
    "@types/react-dom": "^16.0.4",
    "@types/react-hot-loader": "^3.0.6",
    "@types/react-router": "^4.0.23",
    "@types/react-router-dom": "^4.2.6",
    "@types/webpack-env": "^1.13.5",
    "aspnet-webpack": "^2.0.3",
    "aspnet-webpack-react": "^3.0.0",
    "awesome-typescript-loader": "^4.0.1",
    "css-loader": "^0.28.11",
    "event-source-polyfill": "^0.0.12",
    "extract-text-webpack-plugin": "^3.0.2",
    "file-loader": "^1.1.11",
    "foundation-sites": "6.4.3",
    "isomorphic-fetch": "^2.2.1",
    "jquery": "^3.3.1",
    "json-loader": "0.5.4",
    "ol": "^4.6.5",
    "react-dom": "^16.3.1",
    "react-hot-loader": "^4.0.1",
    "react-router-dom": "^4.2.2",
    "style-loader": "^0.20.3",
    "typescript": "^2.8.1",
    "url-loader": "^1.0.1",
    "webpack": "^4.5.0",
    "webpack-hot-middleware": "^2.21.2"
  }
}

https://www.npmjs.com/package/@types/openlayers

http://openlayers.org/

注意，TypeScript定义文件位于/ node_modules / @ types / openlayers中，而OpenLayers模块位于/ node_modules / ol中。

在Map.tsx中，有一个OpenLayers类型定义文件的导入。

import * as React from 'react';
import * as $ from 'jquery';
import * as ol from 'openlayers';

各种代码集使用TypeScript OpenLayers定义，例如

让vectorSource：ol.source.Vector = new ol.source.Vector（{ 格式：new ol.format.GeoJSON（）， loader：fnVectorLoader，策略:(范围，分辨率）=＆gt; { 返回[范围]; } }）;

和引用类型定义的intellisense正常工作，表明定义文件位于。

但是，当应用程序运行时，初始化时会显示以下错误，因为React会加载所有组件。

./ClientApp/components/Map.tsx
Module not found: Error: Can't resolve 'openlayers' in 'C:\Users\cp\Documents\Visual Studio 2017\Projects\Maps\Maps.Website\ClientApp\components'
 @ ./ClientApp/components/Map.tsx 13:0-33
 @ ./ClientApp/components/Layout.tsx
 @ ./ClientApp/routes.tsx
 @ ./ClientApp/boot.tsx
 @ multi react-hot-loader/patch event-source-polyfill webpack-hot-middleware/client?path=__webpack_hmr&dynamicPublicPath=true ./ClientApp/boot.tsx

似乎没有在/ node_modules文件夹中搜索OpenLayers模块，而是搜索应用程序组件文件夹（\ ClientApp \ components）。

奇怪的是React和jQuery都有类似的类型定义文件和相应的节点模块，并且加载没有任何问题。

我看到的唯一区别是OpenLayers类型定义文件夹是/ OpenLayers，而模块文件夹是/ node_modules / ol。此外，OpenLayers定义文件中没有默认导出。

对这个问题的原因有任何想法赞赏！

找不到模块：错误：无法使用TypeScript定义文件解析'openlayers'

0 个答案: