How to use the @wordpress/rich-text.isEmpty function in @wordpress/rich-text

RT.insert(VALUE, VALUE, 10, 20);

//
// insertObject
//
RT.insertObject(VALUE, FORMAT);

//
// isCollapsed
//
RT.isCollapsed(VALUE);

//
// isEmpty
//
RT.isEmpty(VALUE);

//
// join
//
RT.join([VALUE, VALUE]);
RT.join([], VALUE);
RT.join([], 'foo');
RT.join([VALUE], 'foo');

//
// registerFormatType
//
RT.registerFormatType('foo', {
    tagName: 'span',
    className: 'foo',
    title: 'Foo',

value: before,
				multilineTag,
			} ) ) );
		}

		if ( hasPastedBlocks ) {
			blocks.push( ...pastedBlocks );
		} else if ( onSplitMiddle ) {
			blocks.push( onSplitMiddle() );
		}

		// If there's pasted blocks, append a block with the content after the
		// caret. Otherwise, do append and empty block if there is no
		// `onSplitMiddle` prop, but if there is and the content is empty, the
		// middle block is enough to set focus in.
		if ( hasPastedBlocks || ! onSplitMiddle || ! isEmpty( after ) ) {
			blocks.push( onSplit( toHTMLString( {
				value: after,
				multilineTag,
			} ) ) );
		}

		// If there are pasted blocks, set the selection to the last one.
		// Otherwise, set the selection to the second block.
		const indexToSelect = hasPastedBlocks ? blocks.length - 1 : 1;

		onReplace( blocks, indexToSelect );
	}, [ onReplace, onSplit, multilineTag, onSplitMiddle ] );

const splitValue = useCallback( ( record, pastedBlocks = [] ) => {
		if ( ! onReplace || ! onSplit ) {
			return;
		}

		const blocks = [];
		const [ before, after ] = split( record );
		const hasPastedBlocks = pastedBlocks.length > 0;

		// Create a block with the content before the caret if there's no pasted
		// blocks, or if there are pasted blocks and the value is not empty.
		// We do not want a leading empty block on paste, but we do if split
		// with e.g. the enter key.
		if ( ! hasPastedBlocks || ! isEmpty( before ) ) {
			blocks.push( onSplit( toHTMLString( {
				value: before,
				multilineTag,
			} ) ) );
		}

		if ( hasPastedBlocks ) {
			blocks.push( ...pastedBlocks );
		} else if ( onSplitMiddle ) {
			blocks.push( onSplitMiddle() );
		}

		// If there's pasted blocks, append a block with the content after the
		// caret. Otherwise, do append and empty block if there is no
		// `onSplitMiddle` prop, but if there is and the content is empty, the
		// middle block is enough to set focus in.

activeFormats,
	} ) => {
		// Only process file if no HTML is present.
		// Note: a pasted file may have the URL as plain text.
		if ( files && files.length && ! html ) {
			const content = pasteHandler( {
				HTML: filePasteHandler( files ),
				mode: 'BLOCKS',
				tagName,
			} );

			// Allows us to ask for this information when we get a report.
			// eslint-disable-next-line no-console
			window.console.log( 'Received items:\n\n', files );

			if ( onReplace && isEmpty( value ) ) {
				onReplace( content );
			} else {
				splitValue( value, content );
			}

			return;
		}

		let mode = onReplace && onSplit ? 'AUTO' : 'INLINE';

		if (
			__unstableEmbedURLOnPaste &&
			isEmpty( value ) &&
			isURL( plainText.trim() )
		) {
			mode = 'BLOCKS';

window.console.log( 'Received items:\n\n', files );

			if ( onReplace && isEmpty( value ) ) {
				onReplace( content );
			} else {
				splitValue( value, content );
			}

			return;
		}

		let mode = onReplace && onSplit ? 'AUTO' : 'INLINE';

		if (
			__unstableEmbedURLOnPaste &&
			isEmpty( value ) &&
			isURL( plainText.trim() )
		) {
			mode = 'BLOCKS';
		}

		const content = pasteHandler( {
			HTML: html,
			plainText,
			mode,
			tagName,
			canUserUseUnfilteredHTML,
		} );

		if ( typeof content === 'string' ) {
			let valueToInsert = create( { html: content } );