Transfer/Export/Copy Notes from one Mac to a another

Suprisingly the Notes application that comes with MacOS lack of export/import functionality. One workaround of that limitation is using Automator. However it exports only the notes text without the attachments.

Exporting notes from Mac 1:

1. Open Automator from the applications.
2. Create a new Workflow
   
3. Choose Run JavaScript
   
4. Copy/paste following export script:

   function run(input, parameters) {
   
   	const hexEncode = function(s){
       	let result = "";
       	for (let i=0; i < s.length; i++) {
           	hex = s.charCodeAt(i).toString(16);
           	result += ("0"+hex).slice(-2);
       	}
   
       	return result;
   	};
   	
   	const pad = function(n, size) {
       	let s = n + "";
       	while (s.length < size) {
   			s = "0" + s;
   		}
       	return s;
   	};
   
   	
   	const app = Application.currentApplication();
   	app.includeStandardAdditions = true;
   	const notesApp = Application('Notes');
   	notesApp.includeStandardAdditions = true;
   
   	const notes = notesApp.notes;
   	
   	const selectedNotes = app.chooseFromList(notes.name(), { withPrompt: "Select notes to export ?", multipleSelectionsAllowed: true });
   
   
   	if (selectedNotes) {
   		var destFolder = app.chooseFolder().toString();
   		let exported = 0;
   		if (destFolder) {
   			for(let i = 0; i < notes.length; i++) {
   				if (selectedNotes.indexOf(notes[i].name()) > -1) {
   					const fileName = destFolder + "/" 
   						+ pad(i, 9) + 
   						+ "." + hexEncode(notes[i].name())
   						+ "." + notes[i].modificationDate().getTime()
   						+ "." + notes[i].modificationDate().getTime()
   						//+ "." + hexEncode(notes[i].id()) 
   						+ ".html";
   					var f = app.openForAccess(Path(fileName), { writePermission: true });
   					app.setEof(f, { to: 0 });
   					app.write(notes[i].body(), {to: f});
   					
   					app.closeAccess(f);
   					
   					//const attachments = notes[i].attachments();
   					//if (attachments.length > 0) {
   					//	attachments[0].show();
   					//	app.displayDialog(attachments[0].id().toString());						
   					//}
   					
   					exported++;
   				}
   			}
   			app.displayDialog("Done. Notes exported: " + exported);
   		}
   	}
   
   	return input;
   }
       

5. Click Run and select notes to be exported and destination directory (preferable empty one)
6. Copy all notes files to destination Mac 2 (keep the original file names).

Importing notes to Mac 2:

1. Open Automator from the applications.
2. Create a new Workflow
   
3. Choose Run JavaScript
   
4. Copy/paste following export script:

   function run(input, parameters) {
   	'use strict';
   	
   	
   	const hexDecode = function(s) {
   		const hexes = s.match(/.{1,2}/g) || [];
   		let res = hexes.map(h => String.fromCharCode(parseInt(h, 16))).join("");
   		return res;
   	}
   		
   	const epochToStr = function(s) {
   		const lz = function (n) { return (n <=9 ? "0" : "") + n };
    	
   		const d = new Date(parseInt(s))
   		return d.getFullYear() + "-" + lz(d.getMonth() + 1) + "-" + lz(d.getDate()) + " " + lz(d.getHours()) + ":" + lz(d.getMinutes());
   	}
   
   	const app = Application.currentApplication();
   	app.includeStandardAdditions = true;
   	
   	const response = app.displayDialog("Prefix note titles with", {
       	withIcon: "note",
       	buttons: ["Modification date", "Note index", "Don't prefix"],
       	defaultButton: "Modification date"
   	});
   	
   	//0index.1title.2create.3modify.
   	let prefixColumn = -1;
   	switch (response.buttonReturned) {
   		case "Modification date": prefixColumn = 3; break;
   		case "Creation date": prefixColumn = 2; break;
   		case "Note index": prefixColumn = 0; break;
   	}
   	
       const finder = Application('System Events');
   	const folderName = app.chooseFolder().toString();
   	const fileNames = finder.folders.byName(folderName).diskItems.name();
   	
   	const notesApp = Application('Notes');
   	notesApp.includeStandardAdditions = true;
   		
   
   	const prefix = function (fileName) {
   		const titleItems = fileName.split('.');		
   		if (prefixColumn >= 0) {
   			titleItems[2] = epochToStr(titleItems[2]);
   			titleItems[3] = epochToStr(titleItems[3]);
   			return titleItems[prefixColumn];
   		} else {
   			return titleItems[0];
   		}
   	}
   	const prefixCoeff = prefixColumn == 2 || prefixColumn == 3 ? 1 : -1;
   	fileNames.sort(function(a,b) { return prefixCoeff * prefix(a).localeCompare(prefix(b)); });
   	
   	
   
   	for (let i = 0; i < fileNames.length; i++) {
   		const path = new Path(folderName + "/" + fileNames[i]);
   
   		const titleItems = fileNames[i].split('.');
   		titleItems[2] = epochToStr(titleItems[2]);
   		titleItems[3] = epochToStr(titleItems[3]);
   		const titlePrefix = (prefixColumn >= 0 ? "[" + titleItems[prefixColumn] + "] " : "");
   		const title = titlePrefix + hexDecode(titleItems[1]);
   		     	
   		const f = app.openForAccess(path);
   		const size = parseInt(app.doShellScript("stat -f%z " + path.toString().replace(" ", "\\ ")));
   		
   		try {
   			let content = "";
   		    if (size > 0) {
   				content = app.read(f);
   			}
   		
   			notesApp.make({ new:"note", withProperties: {name: title, body:content}});			
   		} catch (e) {
   			const msg = "Error processing file: " + fileNames[i] + " (title: " + title + "). Error message:" + e.toString();
   			app.displayDialog(msg + ". Do you want to continue?");
   			notesApp.make({ new:"note", withProperties: {name: title, body:msg}});
   		} finally {
   			app.closeAccess(f);
   		}
   	}
   	
   	app.displayDialog("Done. Notes processed: " + fileNames.length);
   
   	return input;
   }
   

5. Click Run and select the folder containing notes exported from Mac 1