unintentional clear output folder

Autorest will clear output folder when I don’t specify --clear-output-folder in command line or anywhere. Even I try to use --clear-output-folder=false to force it not to clear the output folder, it won’t work.

To repro:

1. run this command autorest --typescript --version=3.1.3 --use=@autorest/typescript@6.0.0-beta.9 --modelerfour.lenient-model-deduplication --license-header=MICROSOFT_MIT_NO_VERSION --typescript-sdks-folder=../azure-sdk-for-js ../azure-rest-api-specs/specification/dns/resource-manager/readme.md
2. run rush update && rush build, we should be able to see the review folder after it finishes.
3. run this command again autorest --typescript --version=3.1.3 --use=@autorest/typescript@6.0.0-beta.9 --modelerfour.lenient-model-deduplication --license-header=MICROSOFT_MIT_NO_VERSION --typescript-sdks-folder=../azure-sdk-for-js ../azure-rest-api-specs/specification/dns/resource-manager/readme.md You will see review or dist or dist-esm folder is gone.

I also tried to remove the --version=3.1.3 and run autorest --reset before I run those commands, still not working.

[sarangan12]

So, I am assuming your statement is:

1. Clear the src folder
2. Then generate the code (irrespective of clear-output-folder/generate-metadata option)

That looks like a reasonable thing to do. Let me send the PR soon for this. Let me know if my understanding is correct

[sarangan12]

Code complete with PR https://github.com/Azure/autorest.typescript/pull/1173