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MomentJS cannot be optimized and the moment-date-adapter is causing increased bundle size

See original GitHub issue

Reproduction

Steps to reproduce:

Add a dependency on MatMomentDateModule on your angular app.
Build the app with ng build --prod.
Notice the increase in the output bundle size.

Screenshot of webpack-bundle-analyzer of the main bundle (built with --stats-json):

Stats - Screenshot from 2020-03-02 19-10-41

Expected Behavior

Addition of a “simple” widget should not increase the output bundle size dramatically.

Actual Behavior

Huge increase in the bundle size, on the order of a few hundred kilobytes. (Over 338kb added by moment.js alone, in my example.)

Environment

Angular: 9.0.4
CDK/Material: 9.1.0
Browser(s): N/A
Operating System (e.g. Windows, macOS, Ubuntu): N/A

Issue Analytics

State:
Created 4 years ago
Reactions:6
Comments:6 (3 by maintainers)

Top GitHub Comments

3reactions

devversioncommented, May 26, 2020

Thanks for this issue. We are aware of the limitations with MomentJS. We should really document the bundle size implications with the moment date adapter. Additionally it might be good to provide a better integrated date adapter (one that can be more optimized).

We have various proposals for other date adapters (such as date-fns or day.js)

1reaction

jelbourncommented, Sep 17, 2020

Tracking providing official alternatives to moment in #20599