// https://github.com/wilsonpage/sass-import-once
$modules: () !default
@mixin exports($name)
    @if (index($modules, $name) == false)
        $modules: append($modules, $name) !global
        @content

@import "composer/Image"
@import "composer/Embed"
@import "composer/Text"

// https://github.com/wilsonpage/sass-import-once
$modules: () !default
@mixin exports($name)
    @if (index($modules, $name) == false)
        $modules: append($modules, $name)
        @content

@import "composer/Image"
@import "composer/Embed"
@import "composer/Text"

Remove the !global because that's a Sass 3.3 thing
Remove the !global because that's a Sass 3.3 thing