AutoHotkey32.jk

'use strict';

const fileTypeKey = 'AutoHotkeyJK';
const fileExtension = '.jk';
const rootKey = 'HKCU\\Software\\Classes\\'; // Current user only; no admin needed.

let install = false;
try {
    regRead(rootKey + fileTypeKey);
} catch (e) {
    install = true;
}
if (msgBox(install ? 'Register ' + fileExtension + ' files to run AutoHotkey?'
    : 'Delete ' + fileExtension + ' file type registration?', undefined, 'y/n') == 'No')
    exitApp();
const values = [
    {key: '', value: 'AutoHotkey JavaScript File'},
    {key: '\\DefaultIcon', value: A_AhkPath + ',1'},
    {key: '\\Shell', value: 'Open'},
    {key: '\\Shell\\Open', value: 'Run Script'},
    {key: '\\Shell\\Open\\Command', value: `"${A_AhkPath}" "%1" %*`},
    {key: '\\Shell\\Edit', value: 'Edit Script'},
    {key: '\\Shell\\Edit\\Command', value: 'notepad "%1" %*'},
];
if (install) {
    for (let v of values)
        regWrite(v.value, 'REG_SZ', rootKey + fileTypeKey + v.key);
    regWrite(fileTypeKey, 'REG_SZ', rootKey + fileExtension);
}
else {
    regDeleteKey(rootKey + fileTypeKey);
    regDeleteKey(rootKey + fileExtension);
}

const SHCNE_ASSOCCHANGED = 0x08000000;
dllCall("shell32\\SHChangeNotify", "uint", SHCNE_ASSOCCHANGED, "uint", 0, "int", 0, "int", 0);