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0.0.10 • Public • Published


Fork of @tabuckner/material-dayjs-adapter with localization added.

An adapter to use Dayjs instead of MomentJS in an effort to reduce dependency size. Feel free to create an issue or submit a PR.

If coming from @angular/material-moment-adapter, using the default locale and UTC plugins you can reduce your dependency size by ~560kb

Heavily inspired by @angular/material-moment-adapter NPM.

This library was generated with Angular CLI version 8.2.14.

Dependency Size Reduction

MomentJS comes bundled with a lot of stuff that you may not need--for instance, locales. If you find that MaterialDayJsAdapter suits your needs well, you could see some substantial size cost savings. In most situations you will see a reduction of ~560kb in webpack-bundle-analyzer.

An Example Project

Using a brand new app generated with the @angular/cli, an app was set up using both MomentJS Date Adapter and Dayjs Date Adapter. Production build statics were then analyzed with webpack-bundle-analyzer.


Chunk Name MomentJS Dayjs Size Reduction
chunk {0} runtime-es2015.js 1.45 kB 1.45 kB 0%
chunk {0} runtime-es5.js 1.45 kB 1.45 kB 0%
chunk {1} main-es2015.js 775 kB 42 kB 43%
chunk {1} main-es5.js 838 kB 505 kB 40%
chunk {2} polyfills-es2015.js 36.4 kB 36.4 kB 0%
chunk {3} polyfills-es5.js 123 kB 123 kB 0%
chunk {4} styles.css 62.7 kB 62.7 kB 0%


Minimal Project with MomentJS Date Adapter momentjs date adapter bundle size analyzer graph momentjs cli stats


Minimal Project with Dayjs Date Adapter dayjs date adapter bundle size analyzer graph dayjs cli stats

How To Use

Import Module

import { MatDayjsDateModule } from '@vanrossumict/material-dayjs-adapter';

  imports: [
export class AppModule { }


Import the locales you need from DayJS and set the current locale

  1. Globally for DayJS
  2. To the Date Adapter itself For example in your AppComponent:
import { DateAdapter } from '@angular/material';
import dayjs, { Dayjs } from 'dayjs';
import 'dayjs/locale/nl';
export class AppComponent {
  constructor(private dateAdapter: DateAdapter<Dayjs>) { 

  setLocale(locale: string) {

Optionally Provide A Configuration

import { MatDayjsDateModule, MAT_DAYJS_DATE_ADAPTER_OPTIONS } from '@vanrossumict/material-dayjs-adapter';
  providers: [
    { provide: MAT_DAYJS_DATE_ADAPTER_OPTIONS, useValue: { useUtc: true } }
export class AppModule { }

Currently Supported Options

export interface DayJsDateAdapterOptions {
   * Turns the use of utc dates on or off.
   * Changing this will change how Angular Material components like DatePicker output dates.
   * {@default false}
  useUtc?: boolean;


Code scaffolding

Run ng generate component component-name --project material-dayjs-adapter to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module --project material-dayjs-adapter.

Note: Don't forget to add --project material-dayjs-adapter or else it will be added to the default project in your angular.json file.


Run ng build material-dayjs-adapter to build the project. The build artifacts will be stored in the dist/ directory.


After building your library with ng build material-dayjs-adapter, go to the dist folder cd dist/material-dayjs-adapter and run npm publish.

Running unit tests

Run ng test material-dayjs-adapter to execute the unit tests via Karma.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI README.


npm i @vanrossumict/material-dayjs-adapter

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