This package is outdated and doesn't support angular 4. I recommend to use moment.js.

ng2-ago is a Angular 2 Pipe that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago").

1.1 Install package with npm:

npm install ng2-ago --save 

1.2 Install package with yarn:

yarn add ng2-ago

2. Add pipe to your module:

import { TimeAgoPipe } from 'ng2-ago';
@NgModule({
    ...
    declarations: [TimeAgoPipe, ...]
    ...
})

Basic:

{{ yourDateElement | ago }}

Set max period time (default: 86400000ms):

{{ yourDateElement | ago:86400000 }}

Set max period time (default: 86400000ms) and date format (default: medium):

{{ yourDateElement | ago:86400000:medium }}