Object Array to Markdown Table

objectArrayToMarkdown.js

function objectArrayToMarkdown(arr) {
	var keys = Object.keys(arr[0]);

	arr.splice(0, 0, Object.assign({}, ...keys.map(key => ({ [key]: key }))));
	arr.splice(1, 0, Object.assign({}, ...keys.map(key => ({ [key]: '---' }))));

	return arr.map(row => {
		return '| ' + (Array.isArray(row) ? row.join(' | ') : keys.map(key => row[key]).join(' | ')) + ' |  ';
	}).join('\n');
}