Splits text into parts based on a regexp of headers and returns an array of objects with the header and the content. (description is WIP)

headsplit.js

//split text by headers (headerRegex, noOfCaptureGroupsInHeaderToReturn)
if(!String.prototype.headsplit) {
	Object.defineProperty(String.prototype, 'headsplit', {
		configurable: true,
		writable: true,
		value: function headsplit(regexp, caps = 1) {
			const text = this.trim().split(/\r?\n/);
			let retArr = [],
					_header = "",
					_content = "",
					_caps = "";
			for (let c = 0; c < caps; c++) {
				_caps += ("\$" + (c + 1) + ".____.");
			}
			_caps = _caps.slice(0, -6);
			for (let t = 0; t < text.length; t++) {
				if (regexp.test(text[t])) {
					retArr.push({
						header: _header.trim(),
						content: _content.trim()
					});
					_header = text[t].replace(regexp, _caps);
					_content = "";
				} else {
					_content += (text[t] + "\n");
				}
				if (t === (text.length - 1)) {
					retArr.push({
						header: _header.trim(),
						content: _content.trim()
					});
				}
			}
			retArr.shift();
			return retArr;
		}
	});
}