netscape-bookmark-export-converter/lib/utilities.js

Converts Netscape Bookmark Format files used by popular web browsers to an array of objects containing individual bookmarks URI's and their respective folder tags.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.useCheerioToConvertStringToJson = exports.reduceToArray = exports.noNull = exports.sanitize = void 0;
/* eslint-disable no-console */
/* eslint-disable no-param-reassign */
/* eslint-disable import/extensions */
/* eslint-disable import/no-unresolved */
const cheerio_1 = require("cheerio");
/**
 * Uses JSON stringify to santize undefinded and null branches
 *
 * @param obj
 * @returns
 */
const sanitize = (obj) => JSON.parse(JSON.stringify(obj, (key, value) => (value === null ? undefined : value)));
exports.sanitize = sanitize;
/**
 * Removes all null values from the nested object
 *
 * @param currentValue
 * @returns
 */
const noNull = (currentValue) => {
    if (currentValue && typeof currentValue === 'object' && Array.isArray(currentValue.children)) {
        currentValue.children = currentValue.children.filter(exports.noNull);
    }
    return currentValue !== null;
};
exports.noNull = noNull;
/**
 * Reduces nested JSON object to array
 *
 * @private
 * @param obj
 * @returns
 */
const reduceToArray = (jsonDataArray) => jsonDataArray.reduce((previousValue, currentValue) => {
    if (currentValue === null || currentValue === void 0 ? void 0 : currentValue.url) {
        return previousValue.concat([currentValue]);
    }
    if (currentValue === null || currentValue === void 0 ? void 0 : currentValue.children) {
        return previousValue.concat((0, exports.reduceToArray)(currentValue.children));
    }
    return previousValue.concat([]);
}, []);
exports.reduceToArray = reduceToArray;
/**
 * Uses Cheerio to convert bookmark file data to a stringified JSON Object
 *
 * @function
 * @private
 * @param fileData
 * @returns
 */
const useCheerioToConvertStringToJson = (fileData) => {
    try {
        const $ = (0, cheerio_1.load)(fileData);
        const jsonDataTree = ({ tagName, children = [] }, tags) => {
            if (tagName === 'dt' && children[0].tagName === 'a') {
                return {
                    url: children[0].attribs.href || '',
                    tags,
                };
            }
            if (tagName === 'dt' && children[0].tagName === 'h3') {
                const tagText = tags.length
                    ? tags.concat([children[0].children[0].data.trim()])
                    : [children[0].children[0].data.trim()];
                return {
                    children: children.map((child) => jsonDataTree(child, tagText)),
                };
            }
            if (children.length > 1) {
                return {
                    children: children.map((child) => jsonDataTree(child, tags)),
                };
            }
            return {};
        };
        return jsonDataTree($('body')[0], []);
    }
    catch (_error) {
        return {};
    }
};
exports.useCheerioToConvertStringToJson = useCheerioToConvertStringToJson;