- Extend the `standard` ESLint configuration
- Remove ESLint rules that are defined in the `standard` configuration
- Get rid of semi-colons
See: https://github.com/resin-io/etcher/pull/1657
Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
This commit changes the whole codebase to adhere to all StandardJS
guidelines rules except semicolons, since the removal of semicolons
affect pretty much all lines, and the final diff is very hard to follow
(and to assess other more involved changes).
In a nutshell:
- When using `function`, we now require a space before the opening
parenthesis
- If a line with operators is broken into multiple lines, the operator
should now go after the line break
- Unnecessary padding lines are now forbidden
There were also some minor things that the `standard` CLI caught that I
updated here.
See: https://standardjs.com
Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
The image stream tests that extract images all have a 20s timeout, which
is manually set in all the suites related to extraction.
This commit extracts that number as a constant called DEFAULT_TIMEOUT.
See: https://github.com/resin-io/etcher/pull/1595
Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
* feat(gui): Friendly error dialog when opening image fails
This displays a friendlier error dialog if opening an image fails
due any reason (like i.e. an unsupported compression method)
Change-Type: patch
* test(image-stream): Add test for unsupported compression method
* test(image-stream): Only check `error.description` when given
* test(image-stream): Add zip-deflate64.zip
This displays a user error if the reading the image causes an error,
instead of letting it fall through and get reported.
This is to avoid reporting errors that are not due to malfunction of the software,
but due to malformatted images.
Change-Type: minor
Changelog-Entry: Display nicer error dialog when reading an invalid image
This changes the test cases to just return the Promises,
to avoid timing out on failures and to provide better
error messages and stack traces.
Change-Type: patch
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>
The `image-stream` module currently returns a readable stream, a
transform stream, a "size", and an optional "estimatedUncompressedSize".
Based on this information, its hard to say what "size" represents. Some
format handlers return the compressed size and provide a decompression
transform stream while others return the decompressed stream directly
and put the decompressed size in "size".
As a way to simplify this, every format handler now returns a "size"
object with the following properties:
- `original`: The original compressed size
- `final.estimated`: Whether the final size is an estimation or not
- `final.value`: The final uncompressed size
As a bonus, we extract the file size retrieval logic to
`imageStream.getFromFilePath()`, which is the onlt part where the
concept of a file should be referred to.
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>
