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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::path::Path;
use std::path::PathBuf;
use std::sync::Arc;
use deno_config::package_json::PackageJsonDeps;
use deno_core::anyhow::bail;
use deno_core::error::AnyError;
use deno_runtime::deno_fs::RealFs;
use deno_runtime::deno_node::load_pkg_json;
use deno_runtime::deno_node::PackageJson;
use deno_semver::package::PackageReq;
#[derive(Debug, Default)]
pub struct PackageJsonDepsProvider(Option<PackageJsonDeps>);
impl PackageJsonDepsProvider {
pub fn new(deps: Option<PackageJsonDeps>) -> Self {
Self(deps)
}
pub fn deps(&self) -> Option<&PackageJsonDeps> {
self.0.as_ref()
}
pub fn reqs(&self) -> Option<Vec<&PackageReq>> {
match &self.0 {
Some(deps) => {
let mut package_reqs = deps
.values()
.filter_map(|r| r.as_ref().ok())
.collect::<Vec<_>>();
package_reqs.sort(); // deterministic resolution
Some(package_reqs)
}
None => None,
}
}
}
/// Attempts to discover the package.json file, maybe stopping when it
/// reaches the specified `maybe_stop_at` directory.
pub fn discover_from(
start: &Path,
maybe_stop_at: Option<PathBuf>,
) -> Result<Option<Arc<PackageJson>>, AnyError> {
const PACKAGE_JSON_NAME: &str = "package.json";
// note: ancestors() includes the `start` path
for ancestor in start.ancestors() {
let path = ancestor.join(PACKAGE_JSON_NAME);
let package_json = match load_pkg_json(&RealFs, &path) {
Ok(Some(package_json)) => package_json,
Ok(None) => {
if let Some(stop_at) = maybe_stop_at.as_ref() {
if ancestor == stop_at {
break;
}
}
continue;
}
Err(err) => bail!(
"Error loading package.json at {}. {:#}",
path.display(),
err
),
};
log::debug!("package.json file found at '{}'", path.display());
return Ok(Some(package_json));
}
log::debug!("No package.json file found");
Ok(None)
}
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