Enso will now associate with two file extensions:
* `.enso` — Enso source file.
* If the source file belongs to a project under the Project Manager-managed directory, it will be opened.
* If the source file belongs to a project located elsewhere, it will be imported into the PM-managed directory and opened;
* Otherwise, opening the `.enseo` file will fail. (e.g., loose source file without any project)
* `.enso-project` — Enso project bundle, i.e., `tar.gz` archive containing a compressed Enso project directory.
* it will be imported under the PM-managed directory; a unique directory name shall be generated if needed.
### Important Notes
On Windows, the NSIS installer is expected to handle the file associations.
On macOS, the file associations are expected to be set up after the first time Enso is started,
On Linux, the file associations are not supported yet.
- prefer `null`, `!= null` and `== null` instead of `undefined`
- disallow `as`, add comments for the existing usages of `as`
- make `tsconfig.json` a bit stricter
- minor fixes to other files that were missed
# Important Notes
N/A
This PR replaces webpack with esbuild, as our bundler.
The change leads to out-of-the-box ~5x improvement in bundling times, reducing the latency in watch-based workflows.
Along with this a new development server (with live reload capacity) has been introduced to support watch command.
[ci no changelog needed]
### Important Notes
* workflow for checking docs has been removed because it was using outdated prettier version and caused troubles; while the same check is performed in a better way by the GUI/Lint job.
* introduced little more typescript in the scripts in place of js, usually with minimal changes.
