csvdrop/dist/index.js

./jsontocsv/README.md

var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
        if (ar || !(i in from)) {
            if (!ar) ar = Array.prototype.slice.call(from, 0, i);
            ar[i] = from[i];
        }
    }
    return to.concat(ar || Array.prototype.slice.call(from));
};
export function jsontocsv(data, filename) {
    if (filename === void 0) { filename = "data.csv"; }
    if (!Array.isArray(data) ||
        data.length === 0 ||
        typeof data[0] !== "object" ||
        Array.isArray(data[0])) {
        throw new Error("Data must be a non-empty array of objects.");
    }
    var headers = Object.keys(data[0]);
    var csvRows = __spreadArray([
        headers.join(",")
    ], data.map(function (row) {
        return headers
            .map(function (field) {
            var value = row[field];
            // Escape quotes and wrap value in double quotes
            return "\"".concat(String(value !== null && value !== void 0 ? value : "").replace(/"/g, '""'), "\"");
        })
            .join(",");
    }), true);
    var csvContent = csvRows.join("\n");
    var blob = new Blob([csvContent], { type: "text/csv;charset=utf-8;" });
    var url = URL.createObjectURL(blob);
    var link = document.createElement("a");
    link.href = url;
    link.setAttribute("download", filename.endsWith(".csv") ? filename : filename + ".csv");
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
    URL.revokeObjectURL(url);
}