Export notes from Note.app to PDF files.

export-notes.applescript

-- 対象のフォルダの一番上を選択している状態から始める
set targetFolder to "aaa"

tell application "Notes"
	activate
	repeat with theFolder in every folder
		if name of theFolder = targetFolder then
			repeat with theNote in every note of theFolder
				tell application "System Events"
					key code 126
				end tell
			end repeat
			repeat with theNote in every note of theFolder
				tell application "System Events"
					tell menu bar 1 of process "Notes"
						click menu bar item "ファイル"
						click menu item "PDFとして書き出す…" of menu "ファイル" of menu bar item "ファイル"
					end tell
					click button "保存" of sheet 1 of window "メモ" of process "Notes"
					delay 1
					key code 125
				end tell
			end repeat
		end if
	end repeat
end tell

export-notes.js

(function(){
	var destPath = "";
	const targetFolder = "aaa";
	const targetNote = "";
	
	var sys = Application.currentApplication();
	sys.includeStandardAdditions = true;
	destPath =
		sys.pathTo("documents folder", {from: "user domain", as: "alias"}).toString()
		+ "/notes";
	var app = new Application("Notes");
	app.includeStandardAdditions = true;
	for (var f=0; f<app.folders.length; f++) {
		var folder = app.folders[f];
		if ("" === targetFolder || folder.name() === targetFolder) {
			for (var n=0; n<folder.notes.length; n++) {
				var note = folder.notes[n];
				if ("" === targetNote || note.name() === targetNote) {
					for (var a=0; a<note.attachments.length; a++) {
						var attach = note.attachments[a];
						var path = destPath + "/" + attach.name();
						console.log(path);
						attach.save({in:Path(path), as:"native format"});
					}
				}
			}
		}
	}
	return null;
})();