@codedoc/core/dist/es6/components/page/meta-override/post.js

Create beautiful modern documentation websites.

function overrideMeta(html, target, behavior, override) {
    let el$ = html.querySelector(`meta[name="${target}"]`);
    if (!el$) {
        el$ = html.createElement('meta');
        el$.setAttribute('name', target);
        html.head.append(el$);
    }
    let content = el$.getAttribute('content') || '';
    if (behavior === 'replace')
        content = override;
    else {
        if (target === 'keywords')
            content = [
                ...content.split(',').map(_ => _.trim()),
                ...override.split(',').map(_ => _.trim())
            ].join(', ');
        else
            content = [content.trim(), override.trim()].join(' ');
    }
    el$.setAttribute('content', content);
}
function addCanonical(html, content) {
    const el$ = html.createElement('link');
    el$.setAttribute('rel', 'canonical');
    el$.setAttribute('href', content);
    html.head.append(el$);
}
function addMetaWithProp(html, prop, content) {
    const el$ = html.createElement('meta');
    el$.setAttribute('property', prop);
    el$.setAttribute('content', content);
    html.head.append(el$);
}
export function pageSpecificMeta(html) {
    html.body.querySelectorAll('[data-meta-override]').forEach(override$ => {
        const target = override$.getAttribute('data-meta-override');
        const behavior = (override$.getAttribute('data-meta-override-behavior') || 'replace');
        const content = override$.textContent || '';
        if (target === 'canonical')
            addCanonical(html, content);
        else
            overrideMeta(html, target, behavior, content);
    });
    html.body.querySelectorAll('[data-meta-override-property]').forEach(override$ => {
        const prop = override$.getAttribute('data-meta-override-property') || '';
        const content = override$.textContent || '';
        addMetaWithProp(html, prop, content);
    });
}
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