Question

我的应用程序在本地运行良好，但是当我想使用ng build --prod进行生产时，出现以下错误：

有什么想法吗？

./ node_modules / rxjs / _esm5 / operators / index.js中的错误找不到模块：错误：无法解析/Users/.../node_modules/rxjs/_esm5/operators中的'../ internal / operators / endWith'

package.json

{
"name": "myApp",
"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": "6.0.5",
  "@angular/cdk": "^6.3.3",
  "@angular/common": "^6.0.0",
  "@angular/compiler": "^6.0.0",
  "@angular/core": "^6.0.0",
  "@angular/forms": "^6.0.0",
  "@angular/http": "^6.0.0",
  "@angular/material": "^6.3.3",
  "@angular/platform-browser": "^6.0.0",
  "@angular/platform-browser-dynamic": "^6.0.0",
  "@angular/router": "^6.0.0",
  "angularfire2": "^5.0.0-rc.10",
  "bootstrap": "^4.1.1",
  "core-js": "^2.5.4",
  "firebase": "^5.0.4",
  "jquery": "^3.3.1",
  "popper.js": "^1.14.3",
  "rxjs": "^6.0.0",
  "rxjs-compat": "^6.2.2",
  "zone.js": "^0.8.26"
},
"devDependencies": {
  "@angular/compiler-cli": "^6.0.0",
  "@angular-devkit/build-angular": "~0.6.0",
  "typescript": "~2.7.2",
  "@angular/cli": "~6.0.0",
  "@angular/language-service": "^6.0.0",
  "@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": "~1.4.2",
  "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"
}
}

这些是我使用RXJS的地方

productos.service.ts

import { of } from 'rxjs';
...
getProductos() {
  return of(this.productos);
}

getProducto<Producto>(id) {
  return of(this.productos.find(p => p.id === id));
}

producto.resolver.service.ts

import { Injectable } from '@angular/core';
import { Router, Resolve, RouterStateSnapshot,
  ActivatedRouteSnapshot } from '@angular/router';
import { Observable } from 'rxjs';
import { map, take } from 'rxjs/operators';
import { Producto, ProductosService } from './productos.service';

@Injectable({
  providedIn: 'root'
})
export class ProductoResolver implements Resolve<Producto> {

constructor(private ps: ProductosService, private router: Router) { }

resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): 
Observable<Producto> {
let id = route.paramMap.get('id');

return this.ps.getProducto(id).pipe(
  take(1),
  map(producto => {
    if (producto) {
      return producto;
    } else { // id not found
      console.error('id not found');
      this.router.navigate(['/productos']);
      return null;
    }
  })
);
}
}

Answer 1

问题似乎出在您的#include <QApplication> #include <QMainWindow> #include <qwt_plot.h> #include <qwt_plot_curve.h> #include <qwt_plot_zoomer.h> int main( int argc, char **argv ) { QApplication a( argc, argv ); a.setStyleSheet("QwtPlotCanvas { background: black; } "); QwtPlot * plot = new QwtPlot(); plot->setAxisAutoScale(QwtPlot::xBottom); plot->setAxisAutoScale(QwtPlot::yLeft); QwtPlotZoomer *zoomer; zoomer = new QwtPlotZoomer( QwtPlot::xBottom, QwtPlot::yLeft, plot->canvas() ); zoomer->setRubberBandPen(QPen(Qt::white)); // create data std::vector<double> x(100); std::vector<double> y1(x.size()); for (size_t i = 0; i< x.size(); ++i) { x[i] = int(i)-50; } for (size_t i = 0; i< y1.size(); ++i) { y1[i] = i*i; } // first curve QwtPlotCurve *curve = new QwtPlotCurve(); curve->setPen(Qt::white); curve->setRawSamples(&x[0], &y1[0], x.size()); curve->attach( plot ); plot->replot(); QMainWindow window; window.setCentralWidget(plot); window.resize(800, 600); window.show(); return a.exec(); }模块损坏了。您可以尝试以下解决方法-

尝试rxjs如果不起作用，请手动删除npm cache clean --force文件夹。
从项目中删除您的node_modules。
使用-%appdata%\npm-cache

Answer 2

当您从较低的位置迁移到较高的位置时，将发生此错误   全局版本的角度版本，但本地版本   和以前一样

或

RXJS可能由于某些原因而损坏

或

您可以安装新版本的rxjs，但不清除缓存使用   接下来的步骤，它可以解决您的问题

步骤1 ：删除缓存npm cache clean --force

步骤2 ：删除节点模块rm -rf node_modules（可以手动删除）

步骤3 ：再次安装节点模块npm install或npm i

./node_modules/rxjs/_esm5/operators/index.js中的错误Angular 6 ng build --prod of / Resolve

2 个答案: