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export default {
// Returns an array with the slotted previous and next links, prepared
// for inclusion in a page's navigation bar. Include with other links
// in the nav bar and then join them all as a unit list, for example.
contentDependencies: ['generateNextLink', 'generatePreviousLink'],
extraDependencies: ['html', 'language'],
relations: (relation) => ({
previousLink:
relation('generatePreviousLink'),
nextLink:
relation('generateNextLink'),
}),
slots: {
previousLink: {
type: 'html',
mutable: true,
},
nextLink: {
type: 'html',
mutable: true,
},
id: {
type: 'boolean',
default: true,
},
},
generate(relations, slots, {html, language}) {
const previousNext = [];
relations.previousLink.setSlots({
link: slots.previousLink,
id: slots.id,
});
relations.nextLink.setSlots({
link: slots.nextLink,
id: slots.id,
});
if (!html.isBlank(slots.previousLink)) {
previousNext.push(relations.previousLink);
}
if (!html.isBlank(slots.nextLink)) {
previousNext.push(relations.nextLink);
}
return previousNext;
},
};
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