Unable to resolve module 'events'

[joetidee]

After requiring this package as per the instructions, I am getting:

Unable to resolve module 'events' from '/Users/myName/AwesomeProject/node_modules: Module does not exist in the module map ...

[Leonidas-from-XIV]

How did you install xml2js?

[i8wu]

Just installed using npm, getting the same error.

Edit: Resolved after npm install events and timers, but I think those two should be listed as dependencies for xml2js?

[ipoweb]

i have the same problem with angular2, i did this:

npm install @types/xml2js --save-dev npm install xml2js --save-dev npm install events --save-dev

then i can build, but i not tested if it'w work. Why i8wu you need timers ?

[i8wu]

@sireneweb it came up as an unable to resolve module npm install timers

[agersoncgps]

I am getting this for every dependency, streams, buffers, timers...

[Leonidas-from-XIV]

Can you post your entire stdout?

[agersoncgps]

Last login: Thu Jul 27 18:32:12 on ttys003
Adams-iMac-3:~ agerson$ cd /Users/agerson/Desktop/CGPSApp 
Adams-iMac-3:CGPSApp agerson$ npm install xml2js --save --loglevel verbose
npm info it worked if it ends with ok
npm verb cli [ '/usr/local/bin/node',
npm verb cli   '/usr/local/bin/npm',
npm verb cli   'install',
npm verb cli   'xml2js',
npm verb cli   '--save',
npm verb cli   '--loglevel',
npm verb cli   'verbose' ]
npm info using [email protected]
npm info using [email protected]
npm verb request uri https://registry.npmjs.org/xml2js
npm verb request no auth needed
npm info attempt registry request try #1 at 8:32:14 PM
npm verb request id 05644741b37650bb
npm verb etag W/"5978142e-1ebbc"
npm verb lastModified Wed, 26 Jul 2017 04:01:50 GMT
npm http request GET https://registry.npmjs.org/xml2js
npm http 304 https://registry.npmjs.org/xml2js
npm verb headers { date: 'Fri, 28 Jul 2017 00:32:14 GMT',
npm verb headers   via: '1.1 varnish',
npm verb headers   'cache-control': 'max-age=300',
npm verb headers   etag: 'W/"5978142e-1ebbc"',
npm verb headers   age: '273',
npm verb headers   connection: 'keep-alive',
npm verb headers   'x-served-by': 'cache-jfk8134-JFK',
npm verb headers   'x-cache': 'HIT',
npm verb headers   'x-cache-hits': '4114',
npm verb headers   'x-timer': 'S1501201935.862040,VS0,VE0',
npm verb headers   vary: 'Accept-Encoding, Accept' }
npm verb etag https://registry.npmjs.org/xml2js from cache
npm verb get saving xml2js to /Users/agerson/.npm/registry.npmjs.org/xml2js/.cache.json
npm verb correctMkdir /Users/agerson/.npm correctMkdir not in flight; initializing
npm verb cache add spec xml2js@^0.4.17
npm verb addNamed ">=0.4.17 <0.5.0" is a valid semver range for xml2js
npm verb addNameRange registry:https://registry.npmjs.org/xml2js not in flight; fetching
npm verb get https://registry.npmjs.org/xml2js not expired, no request
npm verb addNamed "0.4.17" is a plain semver version for xml2js
npm verb afterAdd /Users/agerson/.npm/xml2js/0.4.17/package/package.json not in flight; writing
npm verb correctMkdir /Users/agerson/.npm correctMkdir not in flight; initializing
npm verb afterAdd /Users/agerson/.npm/xml2js/0.4.17/package/package.json written
npm verb request uri https://registry.npmjs.org/xmlbuilder
npm verb request no auth needed
npm info attempt registry request try #1 at 8:32:15 PM
npm verb etag W/"59526267-1563d"
npm verb lastModified Tue, 27 Jun 2017 13:49:27 GMT
npm http request GET https://registry.npmjs.org/xmlbuilder
npm http 304 https://registry.npmjs.org/xmlbuilder
npm verb headers { date: 'Fri, 28 Jul 2017 00:32:15 GMT',
npm verb headers   via: '1.1 varnish',
npm verb headers   'cache-control': 'max-age=300',
npm verb headers   etag: 'W/"59526267-1563d"',
npm verb headers   age: '62',
npm verb headers   connection: 'keep-alive',
npm verb headers   'x-served-by': 'cache-jfk8134-JFK',
npm verb headers   'x-cache': 'HIT',
npm verb headers   'x-cache-hits': '1',
npm verb headers   'x-timer': 'S1501201936.700066,VS0,VE0',
npm verb headers   vary: 'Accept-Encoding, Accept' }
npm verb etag https://registry.npmjs.org/xmlbuilder from cache
npm verb get saving xmlbuilder to /Users/agerson/.npm/registry.npmjs.org/xmlbuilder/.cache.json
npm verb correctMkdir /Users/agerson/.npm correctMkdir not in flight; initializing
npm verb cache add spec xmlbuilder@^4.1.0
npm verb addNamed ">=4.1.0 <5.0.0" is a valid semver range for xmlbuilder
npm verb addNameRange registry:https://registry.npmjs.org/xmlbuilder not in flight; fetching
npm verb get https://registry.npmjs.org/xmlbuilder not expired, no request
npm verb addNamed "4.2.1" is a plain semver version for xmlbuilder
npm verb afterAdd /Users/agerson/.npm/xmlbuilder/4.2.1/package/package.json not in flight; writing
npm verb correctMkdir /Users/agerson/.npm correctMkdir not in flight; initializing
npm verb afterAdd /Users/agerson/.npm/xmlbuilder/4.2.1/package/package.json written
npm verb correctMkdir /Users/agerson/.npm/_locks correctMkdir not in flight; initializing
npm verb lock using /Users/agerson/.npm/_locks/staging-3d17163a40924b46.lock for /Users/agerson/Desktop/CGPSApp/node_modules/.staging
npm verb unbuild node_modules/.staging/xml2js-c5f46ee4
npm verb gentlyRm don't care about contents; nuking /Users/agerson/Desktop/CGPSApp/node_modules/.staging/xml2js-c5f46ee4
npm verb tar unpack /Users/agerson/.npm/xml2js/0.4.17/package.tgz
npm verb tar unpacking to /Users/agerson/Desktop/CGPSApp/node_modules/.staging/xml2js-c5f46ee4
npm verb gentlyRm don't care about contents; nuking /Users/agerson/Desktop/CGPSApp/node_modules/.staging/xml2js-c5f46ee4
npm verb gentlyRm don't care about contents; nuking /Users/agerson/Desktop/CGPSApp/node_modules/.staging/xml2js-c5f46ee4/node_modules
npm info lifecycle [email protected]~preinstall: [email protected]
npm verb unbuild node_modules/xml2js
npm info lifecycle [email protected]~preuninstall: [email protected]
npm info lifecycle [email protected]~uninstall: [email protected]
npm verb unbuild rmStuff [email protected] from /Users/agerson/Desktop/CGPSApp/node_modules
npm info lifecycle [email protected]~postuninstall: [email protected]
npm verb gentlyRm don't care about contents; nuking /Users/agerson/Desktop/CGPSApp/node_modules/xml2js
npm info linkStuff [email protected]
npm verb linkBins [email protected]
npm verb linkMans [email protected]
npm info lifecycle [email protected]~install: [email protected]
npm info lifecycle [email protected]~postinstall: [email protected]
npm verb unlock done using /Users/agerson/.npm/_locks/staging-3d17163a40924b46.lock for /Users/agerson/Desktop/CGPSApp/node_modules/.staging
npm verb saving [ { name: 'xml2js', spec: '^0.4.17', save: 'dependencies' } ]
[email protected] /Users/agerson/Desktop/CGPSApp
├── UNMET PEER DEPENDENCY [email protected]
└── [email protected] 

npm WARN @shoutem/[email protected] requires a peer of react@^15.0.0 but none was installed.
npm verb 
npm verb If you need help, you may report this error at:
npm verb     <https://github.com/npm/npm/issues>
npm WARN [email protected] requires a peer of react-native-vector-icons@~4.1.1 but none was installed.
npm verb 
npm verb If you need help, you may report this error at:
npm verb     <https://github.com/npm/npm/issues>
npm verb exit [ 0, true ]
npm info ok 
Adams-iMac-3:CGPSApp agerson$ 

[Leonidas-from-XIV]

I don't know much about React-Native but it looks like it does not offer a Node.js environment?

[agersoncgps]

Its built entirely on top of Node. What makes you question it?

[Leonidas-from-XIV]

The only non-Node dependencies that we currently have is sax and xmlbuilder (though I plan to reduce that too) so I am surprised it would miss modules which are in the Node Stdlib.

[dousaitis]

I also tried to use the xml2js in a my react-native app and I had similar issues. The solution was to install all required xml2js dependencies in my react-native app.

cd myReactNativeApp
npm install events buffer stream timers --save

Index.js

import React from 'react'
import { View } from 'react-native';
import ExportSvg from './ExportSvg';

const source = `<svg xmlns='http://www.w3.org/2000/svg' width='420' height='420' style='background-color:rgba(240,240,240,1);'>
  <g style='fill:rgba(38,145,217,1); stroke:rgba(38,145,217,1); stroke-width:2.1;'>
    <rect  x='185' y='185' width='50' height='50'/>
    <rect  x='185' y='235' width='50' height='50'/>
    <rect  x='185' y='285' width='50' height='50'/>
    <rect  x='135' y='85' width='50' height='50'/>
    <rect  x='235' y='85' width='50' height='50'/>
    <rect  x='135' y='185' width='50' height='50'/>
    <rect  x='235' y='185' width='50' height='50'/>
    <rect  x='135' y='235' width='50' height='50'/>
    <rect  x='235' y='235' width='50' height='50'/>
    <rect  x='85' y='235' width='50' height='50'/>
    <rect  x='285' y='235' width='50' height='50'/>
    <rect  x='85' y='285' width='50' height='50'/>
    <rect  x='285' y='285' width='50' height='50'/>
  </g>
</svg>`;

export default (props) => (
  <View style={{flex: 1, alignItems: 'center', justifyContent: 'center', backgroundColor: 'powderblue'}} >
    <ExportSvg
      source={source}
    />
  </View>
);

ExportSvg.js

import React from 'react';
import { View, Text } from 'react-native'
import { parseString } from 'xml2js';

class ExportSvg extends React.Component {
  constructor(props) {
    super(props);
    this.state = { svg: <Text>SVG</Text> };
  }

  renderSvg(source){
    parseString(source, (err, result) => {
      if (err) {
        this.setState({ svg: <Text>Error parsing xml.</Text>});
        return;
      }
      this.setState({ svg: <Text>{JSON.stringify(result)}</Text>});
    });
  }

  render(){
    const { source } = this.props;
    return (
      <View>
        {this.state.svg}
        {this.renderSvg(source)}
      </View>
    );
  }
}

export default ExportSvg;

[elgambet]

Adding events, stream and timers dependency worked for me in a react-native app.

yarn add events stream timers

or

npm install events stream timers --save

[Abhishek12345679]

Its built entirely on top of Node. What makes you question it?

It failed because the native React runtime does not include the Node standard library. Read more at https://docs.expo.io/workflow/using-libraries/#using-third-party-libraries

[sliwalker]

I am using [email protected] with [email protected] and needed to add these libs manually:

yarn add buffer events stream timers

Added this addtionally: yarn add @types/xml2js -D