All files / roosterjs-content-model-dom/lib/modelToDom/optimizers removeUnnecessarySpan.ts

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import { isNodeOfType } from '../../domUtils/isNodeOfType';
 
/**
 * @internal
 */
export function removeUnnecessarySpan(root: Node) {
    for (let child = root.firstChild; child; ) {
        if (
            isNodeOfType(child, 'ELEMENT_NODE') &&
            child.tagName == 'SPAN' &&
            child.attributes.length == 0
        ) {
            const node = child;
            let refNode = child.nextSibling;
            child = child.nextSibling;
 
            while (node.lastChild) {
                const newNode = node.lastChild;
                root.insertBefore(newNode, refNode);
                refNode = newNode;
            }
 
            root.removeChild(node);
        } else {
            child = child.nextSibling;
        }
    }
}