All files / roosterjs-content-model-core/lib/coreApi/setEditorStyle ensureUniqueId.ts

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import { getSafeIdSelector } from 'roosterjs-content-model-dom';
 
/**
 * @internal
 */
export function ensureUniqueId(element: HTMLElement, idPrefix: string): string {
    idPrefix = element.id || idPrefix;
 
    const doc = element.ownerDocument;
    let i = 0;
 
    while (!element.id || doc.querySelectorAll(getSafeIdSelector(element.id)).length > 1) {
        element.id = idPrefix + '_' + i++;
    }
 
    return element.id;
}