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use anyhow::Result;
use turbo_rcstr::RcStr;
use turbo_tasks::{FxIndexMap, ResolvedVc, Vc, fxindexmap};
use turbo_tasks_fs::FileSystemPath;
use turbopack_core::{context::AssetContext, module::Module, reference_type::ReferenceType};
use crate::util::load_next_js_template;
#[turbo_tasks::function]
pub async fn middleware_files(page_extensions: Vc<Vec<RcStr>>) -> Result<Vc<Vec<RcStr>>> {
let extensions = page_extensions.await?;
let files = ["middleware.", "src/middleware."]
.into_iter()
.flat_map(|f| {
extensions
.iter()
.map(move |ext| String::from(f) + ext.as_str())
.map(RcStr::from)
})
.collect();
Ok(Vc::cell(files))
}
#[turbo_tasks::function]
pub async fn get_middleware_module(
asset_context: Vc<Box<dyn AssetContext>>,
project_root: FileSystemPath,
userland_module: ResolvedVc<Box<dyn Module>>,
) -> Result<Vc<Box<dyn Module>>> {
const INNER: &str = "INNER_MIDDLEWARE_MODULE";
// Load the file from the next.js codebase.
let source = load_next_js_template(
"middleware.js",
project_root,
fxindexmap! {
"VAR_USERLAND" => INNER.into(),
"VAR_DEFINITION_PAGE" => "/middleware".into(),
},
FxIndexMap::default(),
FxIndexMap::default(),
)
.await?;
let inner_assets = fxindexmap! {
INNER.into() => userland_module
};
let module = asset_context
.process(
source,
ReferenceType::Internal(ResolvedVc::cell(inner_assets)),
)
.module();
Ok(module)
}
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