function isBuffer(obj) { return (obj && obj.constructor && typeof obj.constructor.isBuffer === "function" && obj.constructor.isBuffer(obj)); } /* Forked from https://github.com/hughsk/flat */ export function flatten(target, opts = {}) { opts = opts || {}; const delimiter = opts.delimiter || "."; const maxDepth = opts.maxDepth; const transformKey = opts.transformKey || ((key) => (isNaN(parseInt(key)) ? key : "")); const output = []; function step(object, prev, currentDepth) { currentDepth = currentDepth || 1; Object.keys(object).forEach(function (key) { const value = object[key]; const isarray = opts.safe && Array.isArray(value); const type = Object.prototype.toString.call(value); const isbuffer = isBuffer(value); const isobject = type === "[object Object]" || type === "[object Array]"; const newKey = prev ? prev + delimiter + transformKey(key) : transformKey(key); if (!isarray && !isbuffer && isobject && Object.keys(value).length && (!opts.maxDepth || currentDepth < maxDepth)) { return step(value, newKey, currentDepth + 1); } output.push(`${newKey}=${value}`); }); } step(target); return output; }