5 unstable releases
0.3.1 | Jun 26, 2024 |
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0.3.0 | Apr 12, 2024 |
0.2.0 | Apr 2, 2024 |
0.1.1 | Mar 30, 2024 |
0.1.0 | Mar 7, 2024 |
#828 in Procedural macros
938 downloads per month
Used in 2 crates
(via tailwind_fuse)
16KB
284 lines
Tailwind Fuse
Two main utils are included in this crate:
- Fuse: Fuse multiple Tailwind classes, with optional conflict resolution.
Inspired by Tailwind Merge
- Variants: Compose type-safe variant classes
Inspired by Class Variance Authority
Installation
Variants requires the variant
feature to be enabled.
With variant
cargo add tailwind-fuse --features variant
Without variant
cargo add tailwind-fuse
Usage: Fuse
You can use tw_join!
to join Tailwind classes, and tw_merge!
to merge Tailwind Classes handling conflicts.
You can use anything that implements AsTailwindClass
use tailwind_fuse::*;
// No conflict resolution
assert_eq!(
"flex items-center justify-center",
tw_join!("flex", "items-center", "justify-center")
);
// Conflict resolution
// Right most class takes precedence
assert_eq!(
"p-4",
tw_merge!("py-2 px-4", "p-4")
);
// Refinements are permitted
assert_eq!(
"p-4 py-2",
tw_merge!("p-4", "py-2")
);
You can use Options to exclude certain classes from being merged
use tailwind_fuse::*;
assert_eq!(
"flex justify-center",
tw_join!("flex", (false).then_some("items-center"), (true).then_some("justify-center"))
)
Custom Tailwind Prefix/Separator
Use merge::set_merge_options
to set global options for tw_merge!
and variant macros.
This can only be set once. Subsequent calls will be ignored.
use tailwind_fuse::{*, merge::*};
const OPTIONS: MergeOptions = MergeOptions {
prefix: "tw-",
separator: ":",
};
// Before setting options, the default (no prefix) is used
assert_eq!(
"tw-bg-black tw-bg-white",
tw_merge!("tw-bg-black", "tw-bg-white"),
);
set_merge_options(OPTIONS);
assert_eq!(
"tw-bg-white",
tw_merge!("tw-bg-black", "tw-bg-white"),
);
Usage: Variants
Useful for building components with first class support for tailwind. By default, conflicts are merged using [tw_merge()
].
Each TwClass
represents a UI element with customizable properties (property is a "variant"). Each variant is represented by a TwVariant
, which must be an enum with a default case.
The classes are merged in the following order, with the last class takes precedence:
- Base class from
TwClass
- Base class from
TwVariant
- Enum variant class from
TwVariant
- Override class using
IntoTailwindClass::with_class
on the struct or builder
use tailwind_fuse::*;
// Your Component Type
#[derive(TwClass)]
// Optional base class
#[tw(class = "flex")]
struct Btn {
size: BtnSize,
color: BtnColor,
}
// Variant for size
#[derive(TwVariant)]
enum BtnSize {
#[tw(default, class = "h-9 px-4 py-2")]
Default,
#[tw(class = "h-8 px-3")]
Sm,
#[tw(class = "h-10 px-8")]
Lg,
}
// Variant for color
#[derive(TwVariant)]
enum BtnColor {
#[tw(default, class = "bg-blue-500 text-blue-100")]
Blue,
#[tw(class = "bg-red-500 text-red-100")]
Red,
}
You can now use the Btn
struct to generate Tailwind classes, using builder syntax, or using the struct directly
Struct Syntax
let button = Btn {
size: BtnSize::Default,
color: BtnColor::Blue,
};
assert_eq!(
"flex h-9 px-4 py-2 bg-blue-500 text-blue-100",
button.to_class()
);
// Conflicts are resolved (bg-blue-500 is knocked out in favor of override)
assert_eq!(
"flex h-9 px-4 py-2 text-blue-100 bg-green-500",
button.with_class("bg-green-500")
);
Builder Syntax
You access the builder using the variants
method. Every variant that is not provided will be replaced with the default variant.
assert_eq!(
"flex h-8 px-3 bg-red-500 text-red-100",
Btn::builder()
.size(BtnSize::Sm)
.color(BtnColor::Red)
.to_class()
);
assert_eq!(
"flex h-8 px-3 text-red-100 bg-green-500",
Btn::builder()
.size(BtnSize::Sm)
.color(BtnColor::Red)
.with_class("bg-green-500")
);
VSCode Intellisense
You can enable autocompletion inside #[tw()]
using the steps below:
-
Install the "Tailwind CSS IntelliSense" Visual Studio Code extension
-
Add the following to your
settings.json
:
{
"tailwindCSS.experimental.classRegex": [
["#[tw\\\\([^\\]]*class\\s*=\\s*\"([^\"]*)\"\\)]", "\"([^\"]*)\""]
]
}
Dependencies
~0.6–1MB
~24K SLoC