@atlaskit/adf-schema/dist/types/utils/extensions.d.ts

Shared package that contains the ADF-schema (json) and ProseMirror node/mark specs

import { ExtensionAttributes, Layout } from '../schema/nodes/types/extensions';
export declare const isValidLayout: (name: string | null) => name is Layout;
export declare const getExtensionAttrs: (dom: HTMLElement, isInline?: boolean) => ExtensionAttributes | false;