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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
mod common;
mod global;
use deno_core::anyhow::bail;
use deno_core::error::custom_error;
use deno_runtime::deno_node::RequireNpmResolver;
use global::GlobalNpmPackageResolver;
use std::path::Path;
use std::path::PathBuf;
use std::sync::Arc;
use deno_ast::ModuleSpecifier;
use deno_core::error::AnyError;
use self::common::InnerNpmPackageResolver;
use super::NpmCache;
use super::NpmPackageReq;
use super::NpmRegistryApi;
pub use self::common::LocalNpmPackageInfo;
#[derive(Clone)]
pub struct NpmPackageResolver {
unstable: bool,
no_npm: bool,
inner: Arc<dyn InnerNpmPackageResolver>,
}
impl NpmPackageResolver {
pub fn new(
cache: NpmCache,
api: NpmRegistryApi,
unstable: bool,
no_npm: bool,
) -> Self {
// For now, always create a GlobalNpmPackageResolver, but in the future
// this might be a local node_modules folder
let inner = Arc::new(GlobalNpmPackageResolver::new(cache, api));
Self {
unstable,
no_npm,
inner,
}
}
/// Resolves an npm package from a Deno module.
pub fn resolve_package_from_deno_module(
&self,
pkg_req: &NpmPackageReq,
) -> Result<LocalNpmPackageInfo, AnyError> {
self.inner.resolve_package_from_deno_module(pkg_req)
}
/// Resolves an npm package from an npm package referrer.
pub fn resolve_package_from_package(
&self,
name: &str,
referrer: &ModuleSpecifier,
) -> Result<LocalNpmPackageInfo, AnyError> {
self.inner.resolve_package_from_package(name, referrer)
}
/// Resolve the root folder of the package the provided specifier is in.
///
/// This will error when the provided specifier is not in an npm package.
pub fn resolve_package_from_specifier(
&self,
specifier: &ModuleSpecifier,
) -> Result<LocalNpmPackageInfo, AnyError> {
self.inner.resolve_package_from_specifier(specifier)
}
/// Gets if the provided specifier is in an npm package.
pub fn in_npm_package(&self, specifier: &ModuleSpecifier) -> bool {
self.resolve_package_from_specifier(specifier).is_ok()
}
/// If the resolver has resolved any npm packages.
pub fn has_packages(&self) -> bool {
self.inner.has_packages()
}
/// Adds a package requirement to the resolver and ensures everything is setup.
pub async fn add_package_reqs(
&self,
packages: Vec<NpmPackageReq>,
) -> Result<(), AnyError> {
assert!(!packages.is_empty());
if !self.unstable {
bail!(
"Unstable use of npm specifiers. The --unstable flag must be provided."
)
}
if self.no_npm {
let fmt_reqs = packages
.iter()
.map(|p| format!("\"{}\"", p))
.collect::<Vec<_>>()
.join(", ");
return Err(custom_error(
"NoNpm",
format!(
"Following npm specifiers were requested: {}; but --no-npm is specified.",
fmt_reqs
),
));
}
self.inner.add_package_reqs(packages).await
}
}
impl RequireNpmResolver for NpmPackageResolver {
fn resolve_package_folder_from_package(
&self,
specifier: &str,
referrer: &std::path::Path,
) -> Result<PathBuf, AnyError> {
let referrer = specifier_to_path(referrer)?;
self
.resolve_package_from_package(specifier, &referrer)
.map(|p| p.folder_path)
}
fn resolve_package_folder_from_path(
&self,
path: &Path,
) -> Result<PathBuf, AnyError> {
let specifier = specifier_to_path(path)?;
self
.resolve_package_from_specifier(&specifier)
.map(|p| p.folder_path)
}
fn in_npm_package(&self, path: &Path) -> bool {
let specifier = match ModuleSpecifier::from_file_path(path) {
Ok(p) => p,
Err(_) => return false,
};
self.resolve_package_from_specifier(&specifier).is_ok()
}
fn ensure_read_permission(&self, path: &Path) -> Result<(), AnyError> {
self.inner.ensure_read_permission(path)
}
}
fn specifier_to_path(path: &Path) -> Result<ModuleSpecifier, AnyError> {
match ModuleSpecifier::from_file_path(&path) {
Ok(specifier) => Ok(specifier),
Err(()) => bail!("Could not convert '{}' to url.", path.display()),
}
}
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