node.js - How to use js function from imported npm package in angular 4 -


i'm using angular 4, here problem have proposal-list component, , use accounting-js npmjs accounting-js , link documentation how use function, installed using 

npm install accounting-js

here proposal-list.component.ts

import { component, oninit } '@angular/core'; import { formatnumber } 'accounting-js/lib/formatnumber.js'; @component({   selector: 'app-proposal-list',   templateurl: './proposal-list.component.html',   styleurls: ['./proposal-list.component.css'] }) export class proposallistcomponent implements oninit {   constructor() { }   ngoninit() {   } }

my question how can use function inside formatnumber.js?

i tried use in proposal-list.component.html

total money =   {{formatnumber(1000500.65)}}

but it's not showed up, no error message.

addional info problem

here app.module.ts

import { browsermodule } '@angular/platform-browser'; import { ngmodule } '@angular/core'; import { alertmodule } 'ngx-bootstrap'; import { bsdropdownmodule } 'ngx-bootstrap'; import { formsmodule } '@angular/forms'; import { appcomponent } './app.component'; import { homepagecomponent } './homepage/homepage.component'; import { approutingmodule } './app-routing.module'; import { documentscomponent } './documents/documents.component'; import { proposallistcomponent } './proposal/proposal-list/proposal-list.component'; import { proposalshowcomponent } './proposal/proposal-show/proposal-show.component'; import { proposalnewcomponent } './proposal/proposal-new/proposal-new.component';   @ngmodule({   declarations: [     appcomponent,     homepagecomponent,     documentscomponent,     proposallistcomponent,     proposalshowcomponent,     proposalnewcomponent   ],   imports: [     alertmodule.forroot(),     bsdropdownmodule.forroot(),     browsermodule,     approutingmodule,     formsmodule   ],   providers: [],   bootstrap: [appcomponent] }) export class appmodule { }

you should doing in ts file , if want in html have define function in ts. try this.

import { component, oninit } '@angular/core'; import { formatnumber } 'accounting-js/lib/formatnumber.js'; @component({   selector: 'app-proposal-list',   templateurl: './proposal-list.component.html',   styleurls: ['./proposal-list.component.css'] }) export class proposallistcomponent implements oninit { private money: number ;       constructor() { }       ngoninit() { this.money = formatnumber(1000500.65)       }     }

and in html

total money = {{money}}

but if want use on fly, can create custom pipe using formatnumber function 

import { pipe, pipetransform } '@angular/core';  import { formatnumber } 'accounting-js/lib/formatnumber.js';  @pipe({name: 'formatnumber'}) export class formatnumberpipe implements pipetransform {     transform(money:number): number {         return formatnumber(money)     } }

and can use like

total money =   1000500.65 | formatnumber

update must include pipe in declarations array of appmodule.

app.module.ts

import { ngmodule } '@angular/core'; import { browsermodule } '@angular/platform-browser'; import { formsmodule } '@angular/forms'; import { httpmodule } '@angular/http';  import { appcomponent } './app.component'; import { formatnumberpipe} './pipe.component';// whatever name of pipe component      @ngmodule({       imports: [         browsermodule,         formsmodule,         httpmodule       ],       declarations: [         appcomponent,         formatnumberpipe// **<-- guy**     ]  ......

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