Daily Notes. Script which creates a markdown file based on the current date and starts the editor.

index.js

const fs = require('fs')
const { exec } = require('child_process')

function paddedZero(value) {
    return (`0${value}`).slice(-2)
}

let today = new Date()
today = `${today.getFullYear()}-${paddedZero(today.getMonth()+1)}-${paddedZero(today.getDate())}`

if (!fs.existsSync(`${today}.md`)) {
    fs.appendFile(`${today}.md`, `# Notes for ${today}\n\n- `)
}

// Works in macOS and with typora as markdown editor. Change regarding your environment or md tool.
exec(`open -a typora ${today}.md`)

// Windows example
// exec(`notepad ${today}.md`)

1. Download the file
2. Place in some directory like daily-notes/
3. Adjust script regarding your environment and needs
4. Execute with node index.js (or create some alias for this command)
5. Write your notes.