Tables are missing the outer bars.

https://github.com/IonicaBizau/json2md/blob/25076ad5ed0af419c0e0fe806e005842275605fc/test/index.js#L206

Should be looking for the following: .toBe("| a | b |\n| --- | --- |\n| col1 | col2 |\n");

[IonicaBizau]

We can add them. Contributions are welcome.

[IonicaBizau]

It could be in the table property:

{
	table: {
	        outer_bars: false,
		headers: ["a", "b"],
		rows: [
			["col1", "col2"]
		]
	}
}

We will leave the default to true in case most of the engines accept it.