Support the --preserve option

[jpvincent]

Hi First of all, thank you for this project, I feel it could help me re-building more efficient bundles, if I managed to have it work completely :)

Expected behaviour

Trying to have the files with the correct directory structure. The --preserve option is documented but fails

> npx shuji -v  --output-dir OUT_SHUJI $npm_package_config_map --preserve
Invalid option '--preserve' - perhaps you meant '--verbose'?

I checked the code, and indeed this option does not exist :)

Is there another way to have the original files in the original directory structure ?

thank you for your support

[paazmaya]

Looks like it is something that came in via one of the open PRs, from which I took some useful commits from. I could have a look how to add this feature, but it will take time.. In any case, PR is always welcome!

[mysticaltech]

It's really useful. It would be great to add official support.

[electroma]

Hi @paazmaya. Any news on this one?

[paazmaya]

@electroma still open for PR that can do this.

[joonspoon]

I used @mazamachi's version successfully. If you clone her repo, and checkout the add-preserve-option branch, then you can use it with node bin/shuji.js -p

[brunowego]

Try: npm install mazamachi/shuji#add-preserve-option -g

[mysticaltech]

@paazmaya This option is really practical, should be included in my humble opinion. @mazamachi please do a PR 🙏🏻

[davestewart]

Thanks @brunowego for that tip!

Additionally, on Mac/Unix you can use this command to process all .js.map files in a folder (dist)and stick them in one output folder (src):

find dist -name '*.js.map' -exec shuji {} -o src -p \;

I'm no expert but pieced it together from this excellent answer on Stack Overflow.

For anyone following in future, I summarised all the information here in a gist:

• Decompile JavaScript from source maps

[paazmaya]

Please try with v0.8.0