nodedb-json/dist/cjs/query/paginator.js

A lightweight JSON-based database for Node.js with TypeScript support, indexing, and complex query capabilities

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.validatePagination = validatePagination;
exports.applyPagination = applyPagination;
function validatePagination(pagination) {
    const { page, pageSize } = pagination;
    if (!Number.isInteger(page) || !Number.isInteger(pageSize) || page < 1 || pageSize < 1) {
        throw new Error('Pagination page and pageSize must be positive integers');
    }
}
function applyPagination(data, pagination) {
    const { page, pageSize } = pagination;
    validatePagination(pagination);
    const totalItems = data.length;
    const totalPages = Math.ceil(totalItems / pageSize);
    const currentPage = page;
    const startIndex = (currentPage - 1) * pageSize;
    const endIndex = startIndex + pageSize;
    const paginatedData = data.slice(startIndex, endIndex);
    return {
        data: paginatedData,
        pagination: {
            currentPage,
            pageSize,
            totalItems,
            totalPages,
            hasPrevious: currentPage > 1,
            hasNext: currentPage < totalPages
        }
    };
}
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