SCSS Variables not loading across files - css

Question

I have a folder with all my .scss files that I want to compile into .css files using gulp. My gulpfile.js looks like this:
var gulp = require('gulp');
var sass = require('gulp-sass');
gulp.task('sass',
function (){
return gulp.src('css/modules/*.scss')
.pipe(sass())
.pipe(gulp.dest('css'))
}
);
When I run the gulp sass command, I get the error that a variable ($med-green) is not defined in blocks.scss. It is defined in base.scss, which gets compiled first because it compiled in alphabetical order (and I do end up with a base.css file). The main.scss file is in the css directory and all the other files are in the css/modules directory, so I know the paths are correct. The How do I get the variables to be visible to all the .scss files? What am I missing?
I also have a main.scss file that imports all my .scss files. If I could use that to compile them into 1 .css file (which is the ultimate goal), then that would be great. When I try to do that, I get the error "Error: File not found with singular glob". The main.scss file looks like this, where modules is a subfolder of css, where my main.scss file is.
#import "./modules/_reset.scss";
#import "./modules/_base.scss";
#import "./modules/_header.scss";
#import "./modules/_footer.scss";
#import "./modules/_blocks.scss";
#import "./modules/_interviews.scss";
#import "./modules/_search.scss";

Answer 1

in your case, there is two things to tell >>>
first: to solve your problem, you need to compile only one file (main.scss) that already imports all other scss files
second: scss files starting with ( _ ), get ignored when compiling in gulp-sass,
it is like telling the gulp-sass compiler that these files are for import only.

Answer 2

Try with this:
return gulp.src('css/main.scss')
in your sass task. You don't want individual css files for each of your modules/*.scss files, that is the point of partials and imports - you just want the one, main.scss, which imports them all. Individually, one file will not see the other's variables because each of them do not import all the others.
You want just main.css at the end to include in your html file.