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11 lines
437 B
JavaScript
11 lines
437 B
JavaScript
const { ValidationError } = require('../error');
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module.exports = async function paginate(cursor, page, page_size) {
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if (page <= 0) throw new ValidationError('page');
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let [count, page_docs] = await Promise.all([
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cursor.count(),
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cursor.skip((page - 1) * page_size).limit(page_size).toArray()
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]);
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let num_pages = Math.floor((count + page_size - 1) / page_size);
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return [page_docs, num_pages, count];
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};
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