export type CustomHeadSanitizeResult = {
html: string;
removedTags: string[];
};
const unique = (items: string[]) => Array.from(new Set(items));
export function sanitizeCustomHeadInput(source: string): CustomHeadSanitizeResult {
const removedTags: string[] = [];
const parser = new DOMParser();
const doc = parser.parseFromString(`${source || ''}`, 'text/html');
const head = doc.head;
head.querySelectorAll('title').forEach((node) => {
removedTags.push('title');
node.remove();
});
head.querySelectorAll('base').forEach((node) => {
removedTags.push('base');
node.remove();
});
head.querySelectorAll('meta').forEach((node) => {
if (node.hasAttribute('charset')) {
removedTags.push('meta charset');
node.remove();
return;
}
if ((node.getAttribute('name') || '').trim().toLowerCase() === 'viewport') {
removedTags.push('meta viewport');
node.remove();
}
});
return {
html: head.innerHTML.trim(),
removedTags: unique(removedTags),
};
}