I start to write my own SCSS along with boostrap. I follow the hierarchy of the framework like:
/* The main file and all partial files are in the same directory */
#import "variables";
#import "mixins";
#import "other-components";
Everything compiles perfectly except that every variable from variables.scss is not compiled. From my understanding, CSS doesn't have variables except for :root, so SCSS variables will be compiled directly to its value in CSS. But when it's done compiling, the variables in CSS remain the same as they're in SCSS, just name like --primary but not value like #000.
Before my post gets slammed as duplicate, here's what I've done:
I've followed Bootstrap's practice. You can check them on Github.
I use VSCode and my colors have boxes right next to them, so I've written valid hex values;
I've tried to switch to #use and use as namespace instead of #import.
I've tried to rename my variables file with and without underscore _ back and forth. It doesn't help solve the problems.
The compiler shows no error whatsoever.
I only use sass package to compile .scss to .css. No extra libraries.
main.scss
_variables.scss
main.css
Any help is appreciated!
When using standard CSS variables, you should make SASS write out the contents like this:
--variable: #{$sass-var};
Otherwise SASS will print the variable as if it's a valid value inside a CSS value (since you could technically define something like --var: $text and then use it later with content: var(--var) to print out that string). Anyways, it's because SASS otherwise doesn't know if you want to print the output of the variable, or just a string named similar to a sass variable.
Related
I'm trying to use multiple variables accross my differents files, but I got an error saying Undefined variable.
The example:
base.scss
$dark-blue: #031f60;
$blue: #36b2e6;
$dark-grey: #747577;
center.scss
#use 'base';
p {
color: $dark-blue;
}
I specifically used #use because SASS website mentioned that it will be deprecated in the future.
#use only works with dart-sass so far, nonetheless,
The naming scheme for files that you want to include should have an underscore _ at the start of the file name.
for example if anyone wants to include a variables file they should name it as _variables.scss rather than variables.scss.
In your case, change the name of base.scss to _base.scss and it should work as long as they are in the same folder/path given is correct.
Gulp Function:
function style() {
//1.where is my scss
return gulp.src('src/scss/**/*.scss') //gets all files ending with .scss in src/scss
//2. pass that file through sass compiler
.pipe(sass().on('error',sass.logError))
//3. where do I save the compiled css file
.pipe(gulp.dest('src/css'))
//4. stream change to all browsers
.pipe(browserSync.stream());
}
Folder Structure:
Expected output:
syles.css will have styles written in syles.scss and vendor.scss
Actual Output:
syles.css will have styles written in syles.scss alone. vendor.scss styles are not added in styles.css
Your actual output is correct. You need to #use a partial into your styles.scss if you want only one file styles.css output containing the vendor.scss content.
Modules
You don't have to write all your Sass in a single file. You can split
it up however you want with the #use rule. This rule loads another
Sass file as a module, which means you can refer to its variables,
mixins, and functions in your Sass file with a namespace based on the
filename. Using a file will also include the CSS it generates in your
compiled output!
from https://sass-lang.com/guide
so in your styles.scss at the top:
#use 'vendor;
and then rename vendor.scss to _vendor.scss
I have no background in SCSS, but I want to make a small change to an existing SCSS and recompile it. However, I found that variables with a dollar sign appear in the output CSS. Even if I discard my changes, the output CSS does not match the original.
For example,
#-webkit-keyframes $animation-name {...
is in my output, while
#-webkit-keyframes move-up {...
is the expected original output.
I think it is either because I didn't use the right command to compile the SCSS files, or because the SCSS files were written for an older compiler.
I have tried the following commands (I clear any output before each trial):
sass --scss main.scss main.css
sass --scss --update main.scss:main.css
sass --scss --update .
Because main.scss imports another SCSS file, I also tried copying the content of the depedent SCSS file into main.scss. This didn't make any difference.
The reason variable names are printed instead of their values is because they were not interpolated so sass uses them as the values instead.
You should write
//Assuming a variable $animation-name: move-up;
#-webkit-keyframes #{$animation-name} { ....
Which gets compiled to
#-webkit-keyframes move-up { ....
Without the interpolation sass believes that the $animation-name is the actual name intended to be used as the name for the animation.
I understand that it is best practise to import SASS/SCSS partials without using the leading underscore; e.g.
#import 'normalize-scss/normalize';
// this imports ./normalize-scss/_normalize.scss
My question for nerdy completeness is, are there any consequences if the file is imported using the underscore?
#import 'normalize-scss/_normalize';
No. If your file is _foo.scss, all of these imports have identical results as long as you don't have any ambiguous filenames (barring any side effects that might exist):
#import "foo";
#import "foo.scss";
#import "_foo";
#import "_foo.scss";
Files with the same name but different extension
The only time an extension is necessary is if you have both _foo.scss and _foo.sass in the same search path. You'll get the following error if you don't specify which one:
error sass/test.scss (Line 7: It's not clear which file to import for '#import "test/bar"'.
Candidates:
test/_bar.sass
test/_bar.scss
Please delete or rename all but one of these files.
)
Files with the same name, but one is prefixed with an underscore
If you have both foo.scss and _foo.scss, then foo.scss will take precedence. If you want _foo.scss instead, you'll need to add the underscore to your import statement.
#import "test/_foo";
Sass will nag you with a warning every time you save no matter what your import statement looks like:
WARNING: In /path/to/test:
There are multiple files that match the name "bar.scss":
_bar.scss
bar.scss
If you add an underscore to the start of the file name, Sass won’t compile it. So, if you don’t want colors.scss to compile to colors.css, name the file _colors.scss instead. Files named this way are called partials in Sass terminology.
More about import feature in Sass you can find here
#import 'normalize-scss/_normalize';
This will simply treat the _normalize.scss file as not partial.
So, if you want that file to be a partial file. then you add another underscore in the front of the actual file name. so the file name will be __normalize.scss.
I would like the file watcher for SCSS files to ignore files with file names starting with an underscore, for example _buttons.scss.
How would I do that?
Start by adding a _ to a file that you want to be ignored... Done! From the documentation:
Partials
If you have a SCSS or Sass file that you want to import but don’t want
to compile to a CSS file, you can add an underscore to the beginning
of the filename. This will tell Sass not to compile it to a normal CSS
file. You can then import these files without using the underscore.
For example, you might have _colors.scss. Then no _colors.css file
would be created, and you can do
#import "colors";
So adding an underscore will do the job. Just don't import.
Be careful naming your files because if you have a style.scss and _style.scss Sass will see these as the same filename and trow an error:
>>> Change detected to: /Users/allcaps/test/style.scss
WARNING: In /Users/allcaps/test:
There are multiple files that match the name "style.scss":
_style.scss
style.scss
A simple workaround will be to add two underscores: __style.scss.
#LazyOne has the right idea. A Scope can be created that excludes files that being with an underscore (_). The page at http://www.jetbrains.com/phpstorm/webhelp/scopes.html#d437174e402 has more information about this, but basically you select the folder you want after creating a custom scope and then in the scope field append it again with && ! between the two and exclude files starting with an underscore.
For example:
file:website/css//* && !file:website/css//_*