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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use deno_core::anyhow::bail;
use deno_core::error::AnyError;
use deno_core::futures::future;
use deno_core::futures::future::LocalBoxFuture;
use deno_core::futures::FutureExt;
use deno_core::ModuleSpecifier;
use deno_graph::npm::NpmPackageNv;
use deno_graph::npm::NpmPackageReq;
use deno_graph::source::NpmResolver;
use deno_graph::source::Resolver;
use deno_graph::source::UnknownBuiltInNodeModuleError;
use deno_graph::source::DEFAULT_JSX_IMPORT_SOURCE_MODULE;
use deno_runtime::deno_node::is_builtin_node_module;
use import_map::ImportMap;
use std::collections::HashMap;
use std::sync::Arc;
use crate::args::JsxImportSourceConfig;
use crate::npm::NpmRegistryApi;
use crate::npm::NpmResolution;
/// A resolver that takes care of resolution, taking into account loaded
/// import map, JSX settings.
#[derive(Debug, Clone)]
pub struct CliGraphResolver {
maybe_import_map: Option<Arc<ImportMap>>,
maybe_package_json_deps: Option<HashMap<String, NpmPackageReq>>,
maybe_default_jsx_import_source: Option<String>,
maybe_jsx_import_source_module: Option<String>,
no_npm: bool,
npm_registry_api: NpmRegistryApi,
npm_resolution: NpmResolution,
sync_download_semaphore: Option<Arc<tokio::sync::Semaphore>>,
}
impl Default for CliGraphResolver {
fn default() -> Self {
// This is not ideal, but necessary for the LSP. In the future, we should
// refactor the LSP and force this to be initialized.
let npm_registry_api = NpmRegistryApi::new_uninitialized();
let npm_resolution =
NpmResolution::new(npm_registry_api.clone(), None, None);
Self {
maybe_import_map: Default::default(),
maybe_default_jsx_import_source: Default::default(),
maybe_jsx_import_source_module: Default::default(),
no_npm: false,
npm_registry_api,
npm_resolution,
maybe_package_json_deps: Default::default(),
sync_download_semaphore: Self::create_sync_download_semaphore(),
}
}
}
impl CliGraphResolver {
pub fn new(
maybe_jsx_import_source_config: Option<JsxImportSourceConfig>,
maybe_import_map: Option<Arc<ImportMap>>,
no_npm: bool,
npm_registry_api: NpmRegistryApi,
npm_resolution: NpmResolution,
maybe_package_json_deps: Option<HashMap<String, NpmPackageReq>>,
) -> Self {
Self {
maybe_import_map,
maybe_default_jsx_import_source: maybe_jsx_import_source_config
.as_ref()
.and_then(|c| c.default_specifier.clone()),
maybe_jsx_import_source_module: maybe_jsx_import_source_config
.map(|c| c.module),
no_npm,
npm_registry_api,
npm_resolution,
maybe_package_json_deps,
sync_download_semaphore: Self::create_sync_download_semaphore(),
}
}
fn create_sync_download_semaphore() -> Option<Arc<tokio::sync::Semaphore>> {
if crate::npm::should_sync_download() {
Some(Arc::new(tokio::sync::Semaphore::new(1)))
} else {
None
}
}
pub fn as_graph_resolver(&self) -> &dyn Resolver {
self
}
pub fn as_graph_npm_resolver(&self) -> &dyn NpmResolver {
self
}
}
impl Resolver for CliGraphResolver {
fn default_jsx_import_source(&self) -> Option<String> {
self.maybe_default_jsx_import_source.clone()
}
fn jsx_import_source_module(&self) -> &str {
self
.maybe_jsx_import_source_module
.as_deref()
.unwrap_or(DEFAULT_JSX_IMPORT_SOURCE_MODULE)
}
fn resolve(
&self,
specifier: &str,
referrer: &ModuleSpecifier,
) -> Result<ModuleSpecifier, AnyError> {
if let Some(import_map) = &self.maybe_import_map {
return import_map
.resolve(specifier, referrer)
.map_err(|err| err.into());
}
if let Some(deps) = self.maybe_package_json_deps.as_ref() {
if let Some(req) = deps.get(specifier) {
return Ok(ModuleSpecifier::parse(&format!("npm:{req}")).unwrap());
}
}
deno_graph::resolve_import(specifier, referrer).map_err(|err| err.into())
}
}
impl NpmResolver for CliGraphResolver {
fn resolve_builtin_node_module(
&self,
specifier: &ModuleSpecifier,
) -> Result<Option<String>, UnknownBuiltInNodeModuleError> {
if specifier.scheme() != "node" {
return Ok(None);
}
let module_name = specifier.path().to_string();
if is_builtin_node_module(&module_name) {
Ok(Some(module_name))
} else {
Err(UnknownBuiltInNodeModuleError { module_name })
}
}
fn load_and_cache_npm_package_info(
&self,
package_name: &str,
) -> LocalBoxFuture<'static, Result<(), String>> {
if self.no_npm {
// return it succeeded and error at the import site below
return Box::pin(future::ready(Ok(())));
}
// this will internally cache the package information
let package_name = package_name.to_string();
let api = self.npm_registry_api.clone();
let mut maybe_sync_download_semaphore =
self.sync_download_semaphore.clone();
async move {
let result = if let Some(semaphore) = maybe_sync_download_semaphore.take()
{
let _permit = semaphore.acquire().await.unwrap();
api.package_info(&package_name).await
} else {
api.package_info(&package_name).await
};
result.map(|_| ()).map_err(|err| format!("{err:#}"))
}
.boxed()
}
fn resolve_npm(
&self,
package_req: &NpmPackageReq,
) -> Result<NpmPackageNv, AnyError> {
if self.no_npm {
bail!("npm specifiers were requested; but --no-npm is specified")
}
self
.npm_resolution
.resolve_package_req_for_deno_graph(package_req)
}
}
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