This is a small refactoring commit that extracts the MIME related
function from utils.js into a new file called mime.js, and stores the
default image MIME type there as a constant, to avoid duplicating it in
multiple parts of the code.
Change-Type: patch
Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
Using `mime-types` in that place made it impossible to use other
other file extensions like `.sdcard` and have them treated as `application/octet-stream`
when drag and dropping images into Etcher.
This moves the fallback logic in `lib/image-stream` to `.getFromFilePath()`,
to still facilitate proper MIME type detection, while allowing it to fall back
to the octet-stream handler, if there's no available handler for a specific type.
Change-Type: patch
Changelog-Entry: Fix not treating unknown images as octet-stream
This is a regression caused by
https://github.com/resin-io/etcher/pull/1257, which introduced a new way
to detect mime types by using the `mime-types` module.
This module, contrary to `file-type`, will detect certain ISO files as
`application/x-iso9660-image`, which Etcher doesn't know how to handle,
and will therefore should at the user that the format is unsupported.
Change-Type: patch
Changelog-Entry: Don't interpret certain ISO images as unsupported.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
This is one step towards enforcing the linter until we barely have to
check for style issues on code reviews.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
There are a lot of new rules since the last time I revised the ESLint
rules documentation.
I've updated the main `.eslintrc.yml` to include some newer additions,
plus I added another ESLint configuration file inside `tests`, so we can
add some stricted rules to the production code while relaxing them for
the test suite (due to the fact that Mocha is not very ES6 friendly and
Angular tests require a bit of dark magic to setup).
This is a summary of the most important changes:
- Disallow "magic numbers"
These should now be extracted to constants, which forces us to think of
a good name for them, and thus make the code more self-documenting (I
had to Google up the meaning of some existing magic numbers, so I guess
this will be great for readability purposes).
- Require consistent `return` statements
Some functions relied on JavaScript relaxed casting mechanism to work,
which now have explicit return values. This flag also helped me detect
some promises that were not being returned, and therefore risked not
being caught by the exception handlers in case of errors.
- Disallow redefining function arguments
Immutability makes functions easier to reason about.
- Enforce JavaScript string templates instead of string concatenation
We were heavily mixing boths across the codebase.
There are some extra rules that I tweaked, however most of codebase
changes in this commit are related to the rules mentioned above.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
This is a long lasting task. The `etcher-image-stream` project takes
care of converting any kind of image input into a NodeJS readable
stream, handling things like decompression in betwee, however its a
module that, except for weird cases, there is no benefit on having
separate from the main repository.
In order to validate the assumption above, we've left the module
separate for almost a year, and no use case has emerged to keep it
like that.
This commit joins the code and tests of that module in the main
repository.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
