Installation error on windows

[ryudice]

I'm getting this error when running on windows:

`(node:3812) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, copyfile 'null/app.asar' -> 'null/app.asar.backup'
    at Object.copyFileSync (fs.js:1941:3)
    at Object.exports.apply (C:\Users\Administrator\AppData\Roaming\npm\node_modules\mtslack\lib\command.js:89:6)
    at Object.exports.selectTheme (C:\Users\Administrator\AppData\Roaming\npm\node_modules\mtslack\lib\command.js:126:8)
    at Object.exports.change (C:\Users\Administrator\AppData\Roaming\npm\node_modules\mtslack\lib\command.js:117:8)
    at exports.execute (C:\Users\Administrator\AppData\Roaming\npm\node_modules\mtslack\lib\command.js:132:12)
    at run (C:\Users\Administrator\AppData\Roaming\npm\node_modules\mtslack\main.js:27:3)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
    at async AutoUpdate.<anonymous> (C:\Users\Administrator\AppData\Roaming\npm\node_modules\mtslack\main.js:55:7)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:3812) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:3812) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.`

[mallowigi]

Please make sure you have the latest version installed

[ryudice]

I had the latest version but apparantly this doesnt work with the microsoft store version of slack, probably because it is installed in a different directory

[anebz]

I don't have the microsoft version of slack and I get the same error, I heard in similar issues it might be because of Electron-DB?

[jlevier]

I was able to fix this locally on a Windows 10 install. The problem I saw is that this is due to the latest version number of slack and how the code resolves the slack directory. On Windows 10, the directory the code wants to find is C:\Users\my_user\AppData\Local\slack\app-4.10.3. However, if you look at how the code resolves this directory, it only supports up to versions app-4.9.x. The code is found in /lib/consts.js method getWindowsDirectory():

function getWindowsDirectory() {
  for (let i = 9; i >= 0; --i) {
    for (let j = 9; j >= 0; --j) {
      const ver = `4.${i}.${j}`;

Locally I changed this code to the following and was able to run mtslack again on Windows 10:

function getWindowsDirectory() {
  for (let i = 11; i >= 0; --i) {
    for (let j = 11; j >= 0; --j) {
      const ver = `4.${i}.${j}`;

Thanks for the work on this project, @mallowigi. I stare at slack so much throughout the day and am grateful for this awesome theme solution!

[mallowigi]

Makes sense. I'd appreciate if you could make a pr.

[anebz]

Just for completing @jlevier's solution, the mtslack installation is usually in C:\Users\USER\AppData\Roaming\npm\node_modules where USER is your Windows username