How do I use a javascript library with angular 2? I always get an error saying it's not a module.
If I add a script tag to my index.html file pointing to the javascript file, then add it under paths under System.config, then import it, I get an error stating that it's not a module.
I've already tried this and I've also tried this. Neither of them work despite the fact they seem to like to point out that it's easy, and that you can use any of hundreds of libraries.
Here is a javascript library: sheetjs
How do I make this work in angular 2?
index.html
<script src="../node_modules/xlsx/xlsx.js" type="text/javascript"></script>
system-config.ts
System.config({
...
path: {
xlsx: '../node_modules/xlsx/xlsx.js'
}
});
something.ts
import * as xlsx from 'xlsx';
Error message:
Error: Typescript found the following errors:
C:/___/tmp/broccoli_type_script_compiler-input_base_path-o4TZ9PSC.tmp/0/src/app/something/something.component.ts (9, 23): Cannot find module 'xlsx'.
my systemjs.config.js
(function(global) {
// map tells the System loader where to look for things
var map = {
'src': 'src', // 'dist',
'bin': 'bin',
'#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 = {
'src': { defaultExtension: 'js' },
'bin': { defaultExtension: 'js' },
'rxjs': { defaultExtension: 'js' },
'angular2-in-memory-web-api': { main: 'index.js', defaultExtension: 'js' },
};
var ngPackageNames = [
'common',
'compiler',
'core',
'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: 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);
include it in the map variable in this.
add 'xlsx': { defaultExtension: 'js' }, to packages variable. then in your index.html add after the
Maybe this helps:
I noticed, that you are trying to implement the sheetjs/xlsx library. There is a working XLSX library for typescript available here, which works with angular2!
If you are looking for a working demo, have a look here.
You dont included your index.html content, but I assume that the
<script src="../node_modules/xlsx/xlsx.js" type="text/javascript"></script> tag is imported before your base component . If that is true then try to import the script after the base component and on typescript use: declare var xlsx:any;
Related
I'm using system.js and systemjs builder to create a dist folder with all the packed javascript files of my angular2 application.
It works pretty nicely, except that it does not include the following files, which are currently statically included in the index.html:
node_modules/zone.js/dist/zone.js
node_modules/reflect-metadata/Reflect.js
node_modules/systemjs/dist/system.src.js
node_modules/esri-system-js/dist/esriSystem.js
How can I force systemjs builder to include these dependencies?
libs-bundle.js:
var SystemBuilder = require('systemjs-builder');
var builder = new SystemBuilder();
builder.loadConfig('./systemjs.config.js').then(function() {
return builder.bundle(
'app - [app/**/*]', // build app and remove the app code - this leaves only 3rd party dependencies
'dist/libs-bundle.js'
);
}).then(function() {
console.log('library bundles built successfully!');
});
app-bundle.js
var SystemBuilder = require('systemjs-builder');
var builder = new SystemBuilder();
builder.loadConfig('./systemjs.config.js').then(function() {
return builder.bundle(
'app - dist/libs-bundle.js', // build the app only, exclude everything already included in dependencies
'dist/app-bundle.js'
);
}).then(function() {
console.log('Application bundles built successfully!');
});
systemjs.config.js:
/**
* System configuration for Angular 2 samples
* Adjust as necessary for your application needs.
*/
(function(global) {
System.config({
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'dist',
// angular bundles
'#angular/core': 'npm:#angular/core/bundles/core.umd.js',
'#angular/common': 'npm:#angular/common/bundles/common.umd.js',
'#angular/compiler': 'npm:#angular/compiler/bundles/compiler.umd.js',
'#angular/platform-browser': 'npm:#angular/platform-browser/bundles/platform-browser.umd.js',
'#angular/platform-browser-dynamic': 'npm:#angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'#angular/http': 'npm:#angular/http/bundles/http.umd.js',
'#angular/router': 'npm:#angular/router/bundles/router.umd.js',
'#angular/forms': 'npm:#angular/forms/bundles/forms.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular2-in-memory-web-api': 'npm:angular2-in-memory-web-api',
'ng2-slim-loading-bar': 'npm:/ng2-slim-loading-bar',
'ng2-toasty': 'npm:/ng2-toasty',
'primeng': 'npm:/primeng',
'#angular2-material/core': 'npm:/#angular2-material/core',
'#angular2-material/grid-list': 'npm:/#angular2-material/grid-list'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
main: './main.js',
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
},
'esri-mods': {
defaultExtension: 'js'
},
'angular2-in-memory-web-api': {
main: './index.js',
defaultExtension: 'js'
},
'ng2-slim-loading-bar': {
main: 'index.js',
defaultExtension: 'js'
},
'ng2-toasty': {
main: 'index.js',
defaultExtension: 'js'
},
'primeng': {
defaultExtension: 'js'
},
'#angular2-material/core': {
main: './core.umd.js',
defaultExtension: 'js'
},
'#angular2-material/grid-list': {
main: './grid-list.umd.js',
defaultExtension: 'js'
}
},
meta: {
'esri/*': {
build: false
},
'esri-mods': {
build: false
},
'dojo/*': {
build: false
},
}
});
})(this);
I would try doing an npm install in your app directory for each of the missing packages
npm i zone.js
npm i reflect-js
npm i systemjs
npm i esri-system-js
There are a few thing you should do:
set the saveDependenciesAsComponents in your bit.json file. Look here.
When you do bit import, to bring your components, do bit import --skip-npm-install in order to avoid the component package dependencies. This will fallback to the project dependencies due to node module resolution.
I'm not familiar with the library, but if you're in a node runtime, then would something like this work?
const fs = require('fs');
// File destination.txt will be created or overwritten by default.
fs.copyFile('source.txt', 'destination.txt', (err) => {
if (err) throw err;
console.log('source.txt was copied to destination.txt');
});
source
P.S. I recommend fs-jetpack or some other third party wrapper around fs, but this is the simplest snippet to copy a file from one location to another.
I've installed ng2-translate to my proj and console error keep showing 404 of the bundle and xhr error. I've added ng2-translate to my system.config.js that comes with the standard angular2 quickstart but still showing 404 and xhr error.
It's either giving me 404 error or annotation of undefined error :/
github: thread regarding the issue using systemconfig.js
https://github.com/ocombe/ng2-translate/issues/167
var map = {
'app': 'app', // 'dist',
'#angular': 'node_modules/#angular',
'angular2-in-memory-web-api': 'node_modules/angular2-in-memory-web-api',
'ng2-translate': 'node_modules/ng2-translate',
'rxjs': 'node_modules/rxjs'
};
Edit:
var packages = {
'ng2-translate': { main: 'ng2-translate.js', defaultExtension: 'js' },
};
I faced to the same issue today
solution is this:
put 'ng2-translate': 'node_modules/ng2-translate/bundles' in system.config.js in the map and 'ng2-translate' : { defaultExtension: 'js' } in packages
I had to map it like this, in the systemjs config to make it work:
'ng2-translate': 'npm:ng2-translate/bundles/ng2-translate.umd.js'
install the npm module:
npm install ng2-translate --save
update your config like this:
System.config({
packages: {
"ng2-translate": {main: 'ng2-translate.js', "defaultExtension": "js"}
},
map: {
'ng2-translate': 'node_modules/ng2-translate'
}
});
Use ng2-translate like this in .ts file-
import {TranslateService, TranslatePipe} from 'ng2-translate';
See if this helps.
Probably by doing:
'ng2-translate': 'node_modules/ng2-translate',
you are referring index.js
however you might need to point some else .js file such as
'ng2-translate': 'node_modules/ng2-translate/somefile.js',
for example you can do:
System.config({
//... some other stuff
map: {
'ng2-translate': 'node_modules/ng2-translate/ng2-translate.js',
},
packages: {
//... some other stuff, do not put your ng2-translate here
}
});
ng2-translate uses the CommonJS module format as configured in its tsconfig.json:
compilerOptions": {
...
"module": "commonjs",
"target": "es5",
...
}
I successfully added ng2-translate by explicitly specifying this format in the packages section of my SystemJS config.
System.config({
map: {
'ng2-translate': 'node_modules/ng2-translate'
// ... more mappings
},
packages: {
'ng2-bootstrap': {
defaultExtension: 'js',
format: 'cjs'
}
// ... more package definitions
}
});
Refer to the list of supported module formats in the SystemJS documentation for more details.
If like me, you've spent hours trying to fix the ng2-translate (404 not found) issue. Here's is a systemjs.config.js which worked for me. Compliment of Sam Verschueren #github
(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'
};
var paths = {
'underscore': 'node_modules/underscore/underscore.js',
'ng2-translate': 'node_modules/ng2-translate/bundles/ng2-translate.umd.js'
};
// 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' },
'ng2-translate': { 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,
paths: paths
};
System.config(config);
})(this);
you need to have a i18n folder in your app with en.json (its the default setting) or whatever file you call from the constructor, looks like:
constructor(translate: TranslateService) {
// this language will be used as a fallback when a translation isn't found in the current language
translate.setDefaultLang('en');
// the lang to use, if the lang isn't available, it will use the current loader to get them
translate.use('en');
}
I am trying to use the ng2-ckeditor component in my angular2 application, but for some reason i keep getting an error in console saying
ORIGINAL EXCEPTION: ReferenceError: CKEDITOR is not defined
Here is the code i have.
system.config.json
(function(global) {
// map tells the System loader where to look for things
var map = {
'app': 'app', // 'dist',
'#angular': 'node_modules/#angular',
'rxjs': 'node_modules/rxjs',
'angular2-tree-component': 'node_modules/angular2-tree-component',
'lodash': 'node_modules/lodash',
'ng2-ckeditor': 'node_modules/ng2-ckeditor'
};
// 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-tree-component' : { main: 'dist/angular2-tree-component.js', defaultExtension: 'js' },
'lodash' : { main: 'lodash.js', defaultExtension: 'js' },
'ng2-ckeditor' : { main: 'lib/CKEditor.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);
content.component.ts
import { Component, Input } from '#angular/core';
import { Content } from './models/content';
import { CKEditor } from 'ng2-ckeditor';
#Component({
selector: 'content',
template: '<ckeditor [(ngModel)]="content.text" [config]="{ uiColor: '#99000' }" debounce="500"></ckeditor>',
directives: [ CKEditor ]
})
export class ContentComponent {
#Input()
content: Content;
active: number = 1;
sizes: number[] = [ 12, 11, 10, 9, 8, 7, 6, 4, 5, 3, 2, 1 ];
getAnchor() {
return '';
}
}
Can also see here that in my Network tab, the CKEditor.js file is being loaded.
Anyone have any idea why this isnt working?
This means that your CKEDITOR JavaScript didn't load.
The file CKEditor.js refers to the Angular2 component which doesn't contain the editor itself. That file is part of the repo.
So you need to include ckeditor.js yourself.
I'm not sure about the condition on line 159, which should detect missing CKEDITOR JavaScripts. Maybe show the entire error message on what line inside CKEditor.js it throws the error.
I pulled the latest angularjs2 seed application from github (https://github.com/angular/angular2-seed) and got it running in webstorm.
Now I wanted to add a simple load.ts file which preloads some components:
declare var System: any;
declare var esriSystem: any;
esriSystem.register([
'esri/geometry/Point',
'esri/geometry/geometryEngineAsync',
'esri/Map'
], function() {
// bootstrap the app
System.import('../app')
.then(null, console.error.bind(console));
}, {
outModuleName: 'esri-mods'
});
I would like to use this module inside a new map.service.ts: import { Map } from 'esri-mods'; it tells me that it cannot resolve file 'esri-mods'
The overall structure looks like this:
And the system.config.js as follows:
System.config({
transpiler: 'typescript',
typescriptOptions: {
emitDecoratorMetadata: true
},
map: {
app: 'src',
typescript: 'node_modules/typescript/lib/typescript.js',
angular2: 'node_modules/angular2',
rxjs: 'node_modules/rxjs'
},
packages: {
app: {
defaultExtension: 'ts',
main: 'app.ts'
},
angular2: {
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
}
}
});
What is missing for the module to be usable within the application?
I want to use Angular2 along with SystemJS, in such way so I can easily switch between production and development. In development I prefer to use class per file, rather than in production I'd like to use single minimized angular2 bundle.
Currently I have the following index.html and config.js:
indexl.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="stylesheet" type="text/css" href="/node_modules/bootstrap/dist/css/bootstrap.css"/>
<script type="text/javascript" src="/node_modules/angular2/bundles/angular2-polyfills.js"></script>
<script type="text/javascript" src="/node_modules/systemjs/dist/system.js"></script>
<script type="text/javascript" src="/js/config.js"></script>
<script>
System.import('ts/main.ts').catch(console.error.bind(console));
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>
config.js:
System.config({
transpiler: 'typescript',
typescriptOptions: {
emitDecoratorMetadata: true
},
map: {
'angular2': '/node_modules/angular2',
'rxjs': '/node_modules/rxjs'
},
paths: {
'typescript': 'node_modules/typescript/lib/typescript.js',
'http': 'node_modules/angular2/bundles/http.dev.js'
},
packages: {
angular2: {
defaultExtension: 'js'
},
rxjs: { defaultExtension: 'js' },
}
});
Question:
The above code works good for development. Please suggest, how to change System.config in order to use angular2 from a single /node_modules/angular2/bundles/angular2.min.js. Adding angular2.min.js to <script ...></script> is not an option, because in this case I will not be able to switch between dev and min bundles dynamically (assume that index.html is a static page)
In fact, there is nothing to configure in SystemJs if you want to use /node_modules/angular2/bundles/angular2.min.js since modules are explicitly registered into this file using System.register.
So you can remove angular2 from the map block of your SystemJS configuration.
In development, you can use their UMD bundle, here is the systemjs config file from official guide
/**
* 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': { defaultExtension: 'js' },
};
var ngPackageNames = [
'common',
'compiler',
'core',
'http',
'platform-browser',
'platform-browser-dynamic',
'router',
'router-deprecated',
'upgrade',
];
// Add package entries for angular packages
ngPackageNames.forEach(function(pkgName) {
packages['#angular/'+pkgName] = { main: pkgName + '.umd.js', defaultExtension: 'js' };
});
var config = {
map: map,
packages: packages
}
System.config(config);
})(this);
In production, you can use the same setting, but this time you use SystemJS Bundler or Webpack.
Also you must not use *.min.js anymore since it doesn't support tree-shaking optimization like rollup
For setup example, refer here