模块未找到:错误:无法解析'fs‘角

Question

我在角应用程序中实现Mapbox，如下所示

将css添加到角-cli.json中

"../node_modules/@mapbox/mapbox-gl-draw/dist/mapbox-gl-draw.css"

组件

import { Component } from '@angular/core';
import * as mapboxgl from 'mapbox-gl';
import * as MapboxDraw from '@mapbox/mapbox-gl-draw';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})

export class AppComponent {
  static t;
  ngOnInit() {
    mapboxgl.accessToken = 'Token';
    AppComponent.t.map= new mapboxgl.Map({
      container: 'map',
      style: 'mapbox://styles/mapbox/light-v9',
      zoom: 5,
      center: [-78.880453, 42.897852]
    });

     const draw = new MapboxDraw({
        displayControlsDefault: false,
        controls: {
            polygon: true,
            trash: true
        }
    });
    AppComponent.t.map.addControl(draw);
  }
}

它的显示无法编译

./node_modules/jsonlint-lines/lib/jsonlint.js Module not found: Error: Can't resolve 'fs' in 'C:\angular\mapboxdemo\node_modules\jsonlint-lines\lib'

下面是我的package.json

{
  "name": "mapboxdemo",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^6.0.3",
    "@angular/cli": "^1.7.4",
    "@angular/common": "^6.0.3",
    "@angular/compiler": "^6.0.3",
    "@angular/core": "^6.0.3",
    "@angular/forms": "^6.0.3",
    "@angular/http": "^6.0.3",
    "@angular/platform-browser": "^6.0.3",
    "@angular/platform-browser-dynamic": "^6.0.3",
    "@angular/router": "^6.0.3",
    "@mapbox/mapbox-gl-draw": "^1.0.9",
    "core-js": "^2.5.4",
    "mapbox-gl": "^0.46.0",
    "rxjs": "^6.0.0",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.6.8",
    "@angular/compiler-cli": "^6.0.3",
    "@angular/language-service": "^6.0.3",
    "@types/jasmine": "~2.8.6",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.2.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~1.7.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.0",
    "karma-jasmine": "~1.1.1",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.3.0",
    "ts-node": "~5.0.1",
    "tslint": "~5.9.1",
    "typescript": "~2.7.2"
  },
  "browser": {
    "fs": false,
    "path": false,
    "os": false
  }
}

我尝试执行ng eject命令以生成webpack.config文件，并尝试添加{ fs：“空”}，但在错误下面抛出

​

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我怎么才能解决这个问题？

Answer 1

打开package.json文件，将其添加到浏览器对象中。

  "browser": {
     "fs": false,
     "path": false,
     "os": false}

如果您的模块要用于客户端，则应该使用浏览器字段而不是主字段。这有助于提醒用户，它可能依赖于Node.js模块中不可用的原语。

来源：npm文档\ package.json