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Where to place/find the systemjs.config.js file in an angularJS2 project?

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小鲜肉
小鲜肉 2021-02-19 22:35

I am new to angular 2 and trying to use the ng2-datetime-picker in my project. Now after installing the ng2-datetime-picker package when I run the project got an 404 err

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  • 误落风尘
    2021-02-19 23:00

    For those, who are looking for systemjs.config.js content. It will be something similar to this, You can configure it as per your requirements. 

    /**
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function(global) {
  // map tells the System loader where to look for things
  var map = {
    'app':                        'app', // 'dist',
    '@angular':                   'node_modules/@angular',
    'angular2-in-memory-web-api': 'node_modules/angular2-in-memory-web-api',
    'rxjs':                       'node_modules/rxjs'
  };
  // packages tells the System loader how to load when no filename and/or no extension
  var packages = {
    'app':                        { main: 'main.js',  defaultExtension: 'js' },
    'rxjs':                       { defaultExtension: 'js' },
    'angular2-in-memory-web-api': { main: 'index.js', defaultExtension: 'js' },
  };
  var ngPackageNames = [
    'common',
    'compiler',
    'core',
    'forms',
    'http',
    'platform-browser',
    'platform-browser-dynamic',
    'router',
    'router-deprecated',
    'upgrade',
  ];
  // Individual files (~300 requests):
  function packIndex(pkgName) {
    packages['@angular/'+pkgName] = { main: 'index.js', defaultExtension: 'js' };
  }
  // Bundled (~40 requests):
  function packUmd(pkgName) {
    packages['@angular/'+pkgName] = { main: 'bundles/' + pkgName + '.umd.js', defaultExtension: 'js' };
  }
  // Most environments should use UMD; some (Karma) need the individual index files
  var setPackageConfig = System.packageWithIndex ? packIndex : packUmd;
  // Add package entries for angular packages
  ngPackageNames.forEach(setPackageConfig);
  var config = {
    map: map,
    packages: packages
  };
  System.config(config);
})(this);

    And your index.html will look like : (Take care the order of .js file)

    <head>
    <meta charset="UTF-8">
    <title>My Angular 2 App!</title>

    <!-- css -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootswatch/3.3.7/flatly/bootstrap.min.css">
    <style>body { padding: 50px 0; }</style>

    <!-- js -->
    <!-- load the dependencies -->
    <script src="node_modules/core-js/client/shim.min.js"></script>
    <script src="node_modules/zone.js/dist/zone.js"></script>
    <script src="node_modules/reflect-metadata/Reflect.js"></script>

    <!-- load our angular app with systemjs -->
    <script src="node_modules/systemjs/dist/system.src.js"></script>
    <script src="systemjs.config.js"></script>
    <script>
        System.import('app').catch(function(err) { console.error(err); });
    </script>
</head>
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  • 春和景丽
    2021-02-19 23:08

    You need to create a "systemjs.config.js" file and load it from index.html, like a regular script:

     <script src="systemjs.config.js"></script>

    Make sure you also include System.JS before the config script:

    <script src="node_modules/systemjs/dist/system.src.js"></script>

    The following script loads the first module:

    System.import('app').catch(function (err) { console.error(err); });

    By default (according to your systemjs.config.js), SystemJS will look for app.js or app/main.js.

    In your systemjs.config.js file, you want to map the node package to a path where there is an index.js or package.json, which indicates where the module is located. The module should be compatible with your module loader that you intend to use: AMD, UMD, CommonJS, SystemJS, es6 etc

    The following should work in your systemjs.config.js file:

    'paths': {
    'npm:':'node_modules/'
},

'map': {
     'ng2-datetime-picker': 'npm:ng2-datetime-picker'
      ...
},
'packages':  {
     'ng2-datetime-picker': 'dist/ng2-datetime-picker.umd.js'
 }

    Or, you could map the UMD file directly:

    'paths': {
    'npm:':'node_modules/'
},

'map': {
     'ng2-datetime-picker': 'npm:ng2-datetime-picker/dist/ng2-datetime-picker.umd.js'
      ...
}

    The following will only work with CommonJS/AMD/SystemJS as index.js uses the 'require' syntax:

    'paths': {
    'npm:':'node_modules/'
 },

'map': {
     'ng2-datetime-picker': 'npm:ng2-datetime-picker'
      ...
},
'packages':  {
     'ng2-datetime-picker': 'dist/index.js'
 }

    EDIT

    This should work:

        // packages tells the System loader how to load when no filename and/or no extension
    packages: {
        app: { main: 'boot.js', defaultExtension: 'js' },
        rxjs: { defaultExtension: 'js' },
        'ng2-datetime-picker': { main: 'dist/ng2-datetime-picker.umd.js', defaultExtension: 'js' }
    }
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