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Layer class

A Layer manages a single D3 data-join lifecycle (bindData → insert → enter/update/merge/exit).

Signature:

export declare class Layer<TData = unknown>

Constructors

Constructor	Modifiers	Description
(constructor)(base, options)		Constructs a new instance of the Layer class

Methods

Method	Modifiers	Description
draw(data)		Executes the full data-join lifecycle. Returns a promise that resolves when all transitions complete.
off(eventKey, handler)		Removes a specific handler, or all handlers for the given lifecycle event.
on(eventKey, handler)		Registers a handler for the given lifecycle event.