Entire window in IE/Edge

Now the engine relies on "window" and "document" objects in case of the entire window.

Link to PR.

Promisification of the Adapter methods

• each Adapter method returns Promise, demo
• added new experimental Adapter.relax method, demo

Link to PR.

Angular <9 support fix

• downgraded TypeScript to v1.6 due to breaking change in v1.7 (microsoft/TypeScript#33939)

Angular 9 support

• moved demo App and lib build to Angular 9
• updated lib build process in accordance with the latest versions of the packages involved
• improved log process run logging

Link to PR.

Support native scroll-anchoring

From this moment we can forget about "overflow-anchor" css property.

Link to PR.

Entire window on Mobile fixes

The requirement of setting "overflow-anchor: none" on the topmost DOM node (html/body) for the case of Entire Window is appeared.

Link to PR.

Scroll to item via Adapter.fix

this.datasource.adapter.fix({
  scrollToItem: ({ $index }) => $index === indexToScroll
});

Link to PR.
Link to Demo.

Input data unified validation

Both Datasource input params (get, settings, devSettings) and the Adapter methods arguments are being validated by single utilities chain. Validation rules are set declaratively and do not imply discrepancies between different types of entities to be validated.

Link to the PR.

Inertia

Based on PR #166

1. Refactoring of the Scroll process, including

• inertia
• synthetic scroll events
• throttling

2. Reducing the Workflow complexity

Refactoring

• remove synchronous errors handling from tests (#154)
• types refactoring