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<@UDDF5MPU4> can you clarify step by step what has happened here? I can try and work through this

I don't think you can reproduce this, I just did my daily work, run an up, which wanted to change some resource, I pressed no to that, run a refresh successfully then run up again and this time pulumi wanted to delete all my files
I switched to another stack in the same project and the same thing  happened, so it's not a stack related issue
Pretty sure that somehow pulumi does not see my ts because it does not pick up any change in the index.ts file and that's why it want to delete all resources

It definitely will see the changes to index.ts - the model allows for us to make changes on the fly and Pulumi up to pick them up immediately

When you run the up and it tries to delete everything, can you grab the details and paste it here for me? I can have a look and see

for 216 resource? that would be a lot :smile:
I can send you in private, but could you tell me first how pulumi compile the ts files and where store the compiled files?
in tsconfig.json I see `"outDir": "bin",`, but I wasn't able to find a bin dir anywhere in my project tree

I figured out the problem, OMG :smile: :smile: :smile:
so, before a refresh, I usually do a stack export, just in case, anything goes wrong, I did the same this time too to a file, named `dev.json`
our main index file looks like this:
```
import * as pulumi from '@pulumi/pulumi'
import { RunError } from '@pulumi/pulumi/errors'

const stack = pulumi.getStack()
let output

if (stack === 'dlv-dev' || /^dlv-sbx([1-3])?$/.test(stack)) {
  output = require('./dev')
} else if (stack === 'dlv-prod') {
  output = require('./prod')
} else {
  throw new RunError(`Invalid stack: ${stack}`)
}

module.exports = output
```
I changed `require('./dev')` to `require('./dev/index.ts')` and magically pulumi worked again, didn't want to delete everything, I became suspicious :slightly_smiling_face:
I added this `console.log(require.resolve('./dev'))` to index.ts, the output: `/home/ncsibra/dev/prmrgt-infra/pulumi/dliver/dev.json` :smile:
Ok, that json file does not contain any resource definition, so pulumi was right about deleting everything :smile:
After renaming `dev.json` `require` picked up the `index.ts` file in the `dev` folder, so pulumi saw my resource definitions again
Lesson learned, sorry about the false alarm :slightly_smiling_face: