* partition nodes as soon as possible
Time to write another story on `@apply`...
When we write code like this:
```css
.a {
@apply b;
}
.b {
@apply uppercase;
color: red;
}
```
Then we create 2 Nodes in our context to keep track of. One has
identifier `a`, the other has identifier `b`. However, when we have an
`@apply` and it contains multiple declarations/atrules, then we have to
split up the (aka partition) node into multiple nodes so that we can
guarantee the correct expected sort order.
This means that the above example technically looks like this:
```css
.a {
@apply b;
}
.b {
@apply uppercase;
}
.b {
color: red;
}
```
If this was your input, then we would still have 1 node for identifier
'a', but we would have 2 nodes for identifier 'b'.
As mentioned earlier, this is important to guarantee the correct order,
here is an example:
```css
.b {
@apply md:font-bold xl:font-normal; /* Here we can sort by our
internal rules. This means that the `md` comes before `xl`. */
}
```
... however
```css
.b {
@apply xl:font-normal; /* This now exists _before_ the example below */
}
.b {
@apply md:font-bold; /* Because we respect the order of the user's css */
}
```
So to guarantee the order when doing this:
```css
.b {
@apply xl:font-normal;
@apply lg:font-normal;
}
```
We also split this up into 2 nodes like this:
```css
.b {
@apply xl:font-normal;
}
.b {
@apply lg:font-normal;
}
```
The tricky part is that now only 1 empty `.b` node exists in our context
because we partitioned the orginal node into multiple nodes and moved
the children to the new nodes and because they are new nodes it means
that they have a different identity.
This partitioning used to happen in the expandApplyAtRules code, but
this is a bit too late because the context has already been filled at
this time. Instead, we move the code more to the front, as if you wrote
those separated blocks yourself. Now the code to inject those nodes into
the context happens in a single spot instead of multiple places.
Another good part about this is that we have better consistency between
each layer because it turns out that these two examples generated
different results...
```css
.a {
@apply b;
}
.b {
@apply uppercase;
color: red;
}
```
... is different compared to:
```css
@tailwind components;
@layer components {
.a {
@apply b;
}
.b {
@apply uppercase;
color: red;
}
}
```
Even if both `a` and `b` are being used in one of your content paths...
Yeah.. *sigh*
* add more `@apply` related tests
* update changelog
* remove support for basic nesting (leftover)
* remove leftover todo
This has been fixed already
* Always include css with apply in context
* Use let
We use it more consistently
* Remove early return
To match the style of the surrounding code
* Don't return layer directives
They do not need to be returned here. If it's needed in the future its easy enough to add it back.
* Use let
* Update changelog
* fix typo
And re-format comments
Co-authored-by: Jordan Pittman <jordan@cryptica.me>
Co-authored-by: Robin Malfait <malfait.robin@gmail.com>
* add `collapseDuplicateDeclarations`
This will allow us to remove duplicate declarations. This occurs when
you are using `@apply` for example.
The reason I implemented it as a separate step, is because this doesn't
only happen for `@apply`, but it also happens if you do something like:
```js
addComponents({ '.btn-blue, .btm-red': { padding: '10px' } })
```
So instead of tracking down every place this is happening, it now
happens at the very end.
* use new plugin in processTailwindFeatures
* add/update tests by removing duplicate declarations
* update changelog
* make `jit` mode the default when no mode is specified
* unify JIT and AOT codepaths
* ensure `Object.entries` on undefined doesn't break
It could be that sometimes you don't have values in your config (e.g.: `presets: []`), this in turn will break some plugins where we assume we have a value.
* drop AOT specific tests
These tests are all covered by JIT mode already and were AOT specific.
* simplify tests, and add a few
Some of the tests were written for AOT specifically, some were missing. We also updated the way we write those tests, essentially making Tailwind a blackbox, by testing against the final output.
Now that JIT mode is the default, this is super fast because we only generate what is used, instead of partially testing in a 3MB file or building it all, then purging.
* add some todo's to make sure we warn in a few cases
* make `darkMode: 'media'`, the default
This also includes moving dark mode tests to its own dedicated file.
* remove PostCSS 7 compat mode
* update CLI to be JIT-first
* fix integration tests
This is not a _real_ fix, but it does solve the broken test for now.
* warn when using @responsive or @variants
* remove the JIT preview warning
* remove AOT-only code paths
* remove all `mode: 'jit'` blocks
Also remove `variants: {}` since they are not useful in `JIT` mode
anymore.
* drop unused dependencies
* rename `purge` to `content`
* remove static CDN builds
* mark `--purge` as deprecated in the CLI
This will still work, but a warning will be printed and it won't show up
in the `--help` output.
* cleanup nesting plugin
We don't have to duplicate it anymore since there is no PostCSS 7
version anymore.
* make sure integration tests run in band
* cleanup folder structure
* make sure nesting folder is available
* simplify resolving of purge/content information
* resolve purge paths
* add test for purgecss pattern resolution
* resolve purgecss patterns relative to the config file if there is one
* account for raw content when transforming purgecss options
* append test name to postcss `from` option in purge tests
fixes tests hanging
* add test for relative purge path resolution in JIT mode
* fix memory leak
* add optional condition to hasAtRule
* use known tree to handle `@apply` when required `@tailwind` at rules exists
Otherwise we will generate the lookup tree.
* only generate the missing `@tailwind` atrules when using `@apply`
* update perf config to reflect 2.0 changes
* update changelog
* ensure lookup tree is correctly cached based on used tailwind atrules
- Add better Pug support
- Add "modes", with "all" and "conservative" by default
- Allow passing options through to PurgeCSS
- Rename `paths` to `content` to match PurgeCSS
