mirror of
https://github.com/denoland/deno.git
synced 2024-11-14 16:33:45 -05:00
f77c5701f7
This commit integrates import map and "classic" resolutions in the "--compat" mode when using ES modules; in effect "http:", "https:" and "blob:" imports now work in compat mode. The algorithm works as follows: 1. If there's an import map, try to resolve using it and if succeeded return the specifier 2. Try to resolve using "Node ESM resolution", and if succeeded return the specifier 3. Fall back to regular ESM resolution
674 lines
22 KiB
Rust
674 lines
22 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use crate::cache;
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use crate::colors;
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use crate::compat;
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use crate::compat::NodeEsmResolver;
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use crate::config_file::ConfigFile;
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use crate::deno_dir;
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use crate::emit;
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use crate::errors::get_module_graph_error_class;
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use crate::file_fetcher::CacheSetting;
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use crate::file_fetcher::FileFetcher;
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use crate::flags;
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use crate::http_cache;
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use crate::lockfile::as_maybe_locker;
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use crate::lockfile::Lockfile;
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use crate::resolver::ImportMapResolver;
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use crate::source_maps::SourceMapGetter;
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use crate::version;
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use deno_core::error::anyhow;
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use deno_core::error::custom_error;
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use deno_core::error::get_custom_error_class;
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use deno_core::error::AnyError;
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use deno_core::error::Context;
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use deno_core::parking_lot::Mutex;
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use deno_core::resolve_url;
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use deno_core::url::Url;
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use deno_core::CompiledWasmModuleStore;
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use deno_core::ModuleSource;
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use deno_core::ModuleSpecifier;
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use deno_core::SharedArrayBufferStore;
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use deno_runtime::deno_broadcast_channel::InMemoryBroadcastChannel;
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use deno_runtime::deno_web::BlobStore;
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use deno_runtime::inspector_server::InspectorServer;
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use deno_runtime::permissions::Permissions;
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use deno_tls::rustls::RootCertStore;
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use deno_tls::rustls_native_certs::load_native_certs;
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use deno_tls::webpki_roots::TLS_SERVER_ROOTS;
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use import_map::ImportMap;
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use std::collections::HashMap;
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use std::collections::HashSet;
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use std::env;
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use std::fs::File;
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use std::io::BufReader;
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use std::ops::Deref;
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use std::sync::Arc;
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/// This structure represents state of single "deno" program.
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///
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/// It is shared by all created workers (thus V8 isolates).
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#[derive(Clone)]
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pub struct ProcState(Arc<Inner>);
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#[derive(Default)]
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struct GraphData {
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modules: HashMap<ModuleSpecifier, Result<ModuleSource, AnyError>>,
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// because the graph detects resolution issues early, but is build and dropped
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// during the `prepare_module_load` method, we need to extract out the module
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// resolution map so that those errors can be surfaced at the appropriate time
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resolution_map:
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HashMap<ModuleSpecifier, HashMap<String, deno_graph::Resolved>>,
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// in some cases we want to provide the range where the resolution error
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// occurred but need to surface it on load, but on load we don't know who the
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// referrer and span was, so we need to cache those
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resolved_map: HashMap<ModuleSpecifier, deno_graph::Range>,
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// deno_graph detects all sorts of issues at build time (prepare_module_load)
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// but if they are errors at that stage, the don't cause the correct behaviors
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// so we cache the error and then surface it when appropriate (e.g. load)
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maybe_graph_error: Option<deno_graph::ModuleGraphError>,
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}
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pub struct Inner {
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/// Flags parsed from `argv` contents.
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pub flags: flags::Flags,
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pub dir: deno_dir::DenoDir,
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pub coverage_dir: Option<String>,
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pub file_fetcher: FileFetcher,
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graph_data: Arc<Mutex<GraphData>>,
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pub lockfile: Option<Arc<Mutex<Lockfile>>>,
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pub maybe_config_file: Option<ConfigFile>,
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pub maybe_import_map: Option<ImportMap>,
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pub maybe_inspector_server: Option<Arc<InspectorServer>>,
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pub root_cert_store: Option<RootCertStore>,
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pub blob_store: BlobStore,
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pub broadcast_channel: InMemoryBroadcastChannel,
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pub shared_array_buffer_store: SharedArrayBufferStore,
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pub compiled_wasm_module_store: CompiledWasmModuleStore,
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}
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impl Deref for ProcState {
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type Target = Arc<Inner>;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl ProcState {
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pub async fn build(flags: flags::Flags) -> Result<Self, AnyError> {
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let maybe_custom_root = flags
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.cache_path
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.clone()
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.or_else(|| env::var("DENO_DIR").map(String::into).ok());
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let dir = deno_dir::DenoDir::new(maybe_custom_root)?;
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let deps_cache_location = dir.root.join("deps");
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let http_cache = http_cache::HttpCache::new(&deps_cache_location);
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let mut root_cert_store = RootCertStore::empty();
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let ca_stores: Vec<String> = flags
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.ca_stores
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.clone()
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.or_else(|| {
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let env_ca_store = env::var("DENO_TLS_CA_STORE").ok()?;
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Some(
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env_ca_store
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.split(',')
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.map(|s| s.trim().to_string())
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.filter(|s| !s.is_empty())
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.collect(),
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)
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})
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.unwrap_or_else(|| vec!["mozilla".to_string()]);
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for store in ca_stores.iter() {
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match store.as_str() {
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"mozilla" => {
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root_cert_store.add_server_trust_anchors(&TLS_SERVER_ROOTS);
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}
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"system" => {
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let roots = load_native_certs()
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.expect("could not load platform certs")
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.roots;
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root_cert_store.roots.extend(roots);
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}
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_ => {
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return Err(anyhow!("Unknown certificate store \"{}\" specified (allowed: \"system,mozilla\")", store));
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}
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}
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}
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let ca_file = flags.ca_file.clone().or_else(|| env::var("DENO_CERT").ok());
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if let Some(ca_file) = ca_file {
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let certfile = File::open(&ca_file)?;
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let mut reader = BufReader::new(certfile);
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// This function does not return specific errors, if it fails give a generic message.
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if let Err(_err) = root_cert_store.add_pem_file(&mut reader) {
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return Err(anyhow!("Unable to add pem file to certificate store"));
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}
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}
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if let Some(insecure_allowlist) =
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flags.unsafely_ignore_certificate_errors.as_ref()
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{
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let domains = if insecure_allowlist.is_empty() {
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"for all hostnames".to_string()
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} else {
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format!("for: {}", insecure_allowlist.join(", "))
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};
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let msg =
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format!("DANGER: TLS certificate validation is disabled {}", domains);
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eprintln!("{}", colors::yellow(msg));
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}
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let cache_usage = if flags.cached_only {
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CacheSetting::Only
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} else if !flags.cache_blocklist.is_empty() {
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CacheSetting::ReloadSome(flags.cache_blocklist.clone())
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} else if flags.reload {
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CacheSetting::ReloadAll
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} else {
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CacheSetting::Use
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};
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let blob_store = BlobStore::default();
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let broadcast_channel = InMemoryBroadcastChannel::default();
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let shared_array_buffer_store = SharedArrayBufferStore::default();
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let compiled_wasm_module_store = CompiledWasmModuleStore::default();
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let file_fetcher = FileFetcher::new(
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http_cache,
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cache_usage,
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!flags.no_remote,
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Some(root_cert_store.clone()),
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blob_store.clone(),
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flags.unsafely_ignore_certificate_errors.clone(),
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)?;
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let lockfile = if let Some(filename) = &flags.lock {
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let lockfile = Lockfile::new(filename.clone(), flags.lock_write)?;
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Some(Arc::new(Mutex::new(lockfile)))
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} else {
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None
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};
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let maybe_config_file =
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if let Some(config_path) = flags.config_path.as_ref() {
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Some(ConfigFile::read(config_path)?)
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} else {
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None
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};
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let maybe_import_map: Option<ImportMap> =
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match flags.import_map_path.as_ref() {
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None => None,
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Some(import_map_url) => {
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let import_map_specifier =
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deno_core::resolve_url_or_path(import_map_url).context(format!(
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"Bad URL (\"{}\") for import map.",
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import_map_url
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))?;
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let file = file_fetcher
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.fetch(&import_map_specifier, &mut Permissions::allow_all())
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.await
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.context(format!(
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"Unable to load '{}' import map",
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import_map_specifier
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))?;
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let import_map =
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ImportMap::from_json(import_map_specifier.as_str(), &file.source)?;
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Some(import_map)
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}
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};
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let maybe_inspect_host = flags.inspect.or(flags.inspect_brk);
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let maybe_inspector_server = maybe_inspect_host.map(|host| {
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Arc::new(InspectorServer::new(host, version::get_user_agent()))
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});
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let coverage_dir = flags
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.coverage_dir
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.clone()
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.or_else(|| env::var("DENO_UNSTABLE_COVERAGE_DIR").ok());
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Ok(ProcState(Arc::new(Inner {
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dir,
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coverage_dir,
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flags,
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file_fetcher,
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graph_data: Default::default(),
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lockfile,
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maybe_config_file,
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maybe_import_map,
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maybe_inspector_server,
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root_cert_store: Some(root_cert_store.clone()),
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blob_store,
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broadcast_channel,
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shared_array_buffer_store,
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compiled_wasm_module_store,
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})))
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}
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pub(crate) fn take_graph_error(
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&self,
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) -> Option<deno_graph::ModuleGraphError> {
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self.graph_data.lock().maybe_graph_error.take()
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}
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/// Return any imports that should be brought into the scope of the module
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/// graph.
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fn get_maybe_imports(&self) -> Option<Vec<(ModuleSpecifier, Vec<String>)>> {
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let mut imports = Vec::new();
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if let Some(config_file) = &self.maybe_config_file {
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if let Some(config_imports) = config_file.to_maybe_imports() {
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imports.extend(config_imports);
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}
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}
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if self.flags.compat {
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imports.extend(compat::get_node_imports());
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}
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if imports.is_empty() {
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None
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} else {
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Some(imports)
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}
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}
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/// This method is called when a module requested by the `JsRuntime` is not
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/// available, or in other sub-commands that need to "load" a module graph.
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/// The method will collect all the dependencies of the provided specifier,
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/// optionally checks their integrity, optionally type checks them, and
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/// ensures that any modules that needs to be transpiled is transpiled.
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///
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/// It then populates the `loadable_modules` with what can be loaded into v8.
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pub(crate) async fn prepare_module_load(
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&self,
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roots: Vec<ModuleSpecifier>,
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is_dynamic: bool,
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lib: emit::TypeLib,
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root_permissions: Permissions,
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dynamic_permissions: Permissions,
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) -> Result<(), AnyError> {
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let mut cache = cache::FetchCacher::new(
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self.dir.gen_cache.clone(),
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self.file_fetcher.clone(),
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root_permissions.clone(),
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dynamic_permissions.clone(),
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);
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let maybe_locker = as_maybe_locker(self.lockfile.clone());
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let maybe_imports = self.get_maybe_imports();
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let node_resolver = NodeEsmResolver::new(
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self.maybe_import_map.as_ref().map(ImportMapResolver::new),
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);
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let import_map_resolver =
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self.maybe_import_map.as_ref().map(ImportMapResolver::new);
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let maybe_resolver = if self.flags.compat {
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Some(node_resolver.as_resolver())
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} else {
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import_map_resolver.as_ref().map(|im| im.as_resolver())
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};
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// TODO(bartlomieju): this is very make-shift, is there an existing API
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// that we could include it like with "maybe_imports"?
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let roots = if self.flags.compat {
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let mut r = vec![compat::GLOBAL_URL.clone()];
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r.extend(roots);
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r
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} else {
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roots
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};
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let graph = deno_graph::create_graph(
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roots,
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is_dynamic,
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maybe_imports,
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&mut cache,
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maybe_resolver,
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maybe_locker,
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None,
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)
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.await;
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// If there was a locker, validate the integrity of all the modules in the
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// locker.
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emit::lock(&graph);
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// Determine any modules that have already been emitted this session and
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// should be skipped.
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let reload_exclusions: HashSet<ModuleSpecifier> = {
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let graph_data = self.graph_data.lock();
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graph_data.modules.keys().cloned().collect()
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};
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let config_type = if self.flags.no_check {
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emit::ConfigType::Emit
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} else {
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emit::ConfigType::Check {
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tsc_emit: true,
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lib,
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}
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};
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let (ts_config, maybe_ignored_options) =
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emit::get_ts_config(config_type, self.maybe_config_file.as_ref(), None)?;
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let graph = Arc::new(graph);
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// we will store this in proc state later, as if we were to return it from
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// prepare_load, some dynamic errors would not be catchable
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let maybe_graph_error = graph.valid().err();
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if emit::valid_emit(
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graph.as_ref(),
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&cache,
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&ts_config,
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self.flags.reload,
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&reload_exclusions,
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) {
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if let Some(root) = graph.roots.get(0) {
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log::debug!("specifier \"{}\" and dependencies have valid emit, skipping checking and emitting", root);
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} else {
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log::debug!("rootless graph, skipping checking and emitting");
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}
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} else {
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if let Some(ignored_options) = maybe_ignored_options {
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log::warn!("{}", ignored_options);
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}
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let emit_result = if self.flags.no_check {
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let options = emit::EmitOptions {
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ts_config,
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reload_exclusions,
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reload: self.flags.reload,
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};
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emit::emit(graph.as_ref(), &mut cache, options)?
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} else {
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// here, we are type checking, so we want to error here if any of the
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// type only dependencies are missing or we have other errors with them
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// where as if we are not type checking, we shouldn't care about these
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// errors, and they don't get returned in `graph.valid()` above.
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graph.valid_types_only()?;
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let maybe_config_specifier = self
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.maybe_config_file
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.as_ref()
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.map(|cf| ModuleSpecifier::from_file_path(&cf.path).unwrap());
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let options = emit::CheckOptions {
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debug: self.flags.log_level == Some(log::Level::Debug),
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emit_with_diagnostics: false,
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maybe_config_specifier,
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ts_config,
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};
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for root in &graph.roots {
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let root_str = root.to_string();
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// `$deno$` specifiers are internal specifiers, printing out that
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// they are being checked is confusing to a user, since they don't
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// actually exist, so we will simply indicate that a generated module
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// is being checked instead of the cryptic internal module
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if !root_str.contains("$deno$") {
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log::info!("{} {}", colors::green("Check"), root);
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} else {
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log::info!("{} a generated module", colors::green("Check"))
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}
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}
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emit::check_and_maybe_emit(graph.clone(), &mut cache, options)?
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};
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log::debug!("{}", emit_result.stats);
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// if the graph is not valid then the diagnostics returned are bogus and
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// should just be ignored so that module loading can proceed to allow the
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// "real" error to be surfaced
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if !emit_result.diagnostics.is_empty() && maybe_graph_error.is_none() {
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return Err(anyhow!(emit_result.diagnostics));
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}
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}
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{
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let mut graph_data = self.graph_data.lock();
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// we iterate over the graph, looking for any modules that were emitted, or
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// should be loaded as their un-emitted source and add them to the in memory
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// cache of modules for loading by deno_core.
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graph_data
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.modules
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.extend(emit::to_module_sources(graph.as_ref(), &cache));
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// since we can't store the graph in proc state, because proc state needs to
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// be thread safe because of the need to provide source map resolution and
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// the graph needs to not be thread safe (due to wasmbind_gen constraints),
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// we have no choice but to extract out other meta data from the graph to
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// provide the correct loading behaviors for CLI
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graph_data.resolution_map.extend(graph.resolution_map());
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graph_data.maybe_graph_error = maybe_graph_error;
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}
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// any updates to the lockfile should be updated now
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if let Some(ref lockfile) = self.lockfile {
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let g = lockfile.lock();
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g.write()?;
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}
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Ok(())
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}
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pub(crate) fn resolve(
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&self,
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specifier: &str,
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referrer: &str,
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) -> Result<ModuleSpecifier, AnyError> {
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if let Ok(s) = deno_core::resolve_url_or_path(referrer) {
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let maybe_resolved = {
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let graph_data = self.graph_data.lock();
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let resolved_specifier = graph_data
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.resolution_map
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.get(&s)
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.and_then(|map| map.get(specifier));
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resolved_specifier.cloned()
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};
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if let Some(resolved) = maybe_resolved {
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match resolved {
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Some(Ok((specifier, span))) => {
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let mut graph_data = self.graph_data.lock();
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graph_data.resolved_map.insert(specifier.clone(), span);
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return Ok(specifier);
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}
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Some(Err(err)) => {
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return Err(custom_error(
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"TypeError",
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format!("{}\n", err.to_string_with_range()),
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))
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}
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_ => (),
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}
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}
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}
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// FIXME(bartlomieju): hacky way to provide compatibility with repl
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let referrer = if referrer.is_empty() && self.flags.repl {
|
|
deno_core::DUMMY_SPECIFIER
|
|
} else {
|
|
referrer
|
|
};
|
|
if let Some(import_map) = &self.maybe_import_map {
|
|
import_map
|
|
.resolve(specifier, referrer)
|
|
.map_err(|err| err.into())
|
|
} else {
|
|
deno_core::resolve_import(specifier, referrer).map_err(|err| err.into())
|
|
}
|
|
}
|
|
|
|
pub fn load(
|
|
&self,
|
|
specifier: ModuleSpecifier,
|
|
maybe_referrer: Option<ModuleSpecifier>,
|
|
is_dynamic: bool,
|
|
) -> Result<ModuleSource, AnyError> {
|
|
log::debug!(
|
|
"specifier: {} maybe_referrer: {} is_dynamic: {}",
|
|
specifier,
|
|
maybe_referrer
|
|
.as_ref()
|
|
.map(|s| s.to_string())
|
|
.unwrap_or_else(|| "<none>".to_string()),
|
|
is_dynamic
|
|
);
|
|
|
|
{
|
|
let graph_data = self.graph_data.lock();
|
|
if let Some(module_result) = graph_data.modules.get(&specifier) {
|
|
if let Ok(module_source) = module_result {
|
|
return Ok(module_source.clone());
|
|
}
|
|
} else {
|
|
if maybe_referrer.is_some() && !is_dynamic {
|
|
if let Some(span) = graph_data.resolved_map.get(&specifier) {
|
|
return Err(custom_error(
|
|
"NotFound",
|
|
format!("Cannot load module \"{}\".\n at {}", specifier, span),
|
|
));
|
|
}
|
|
}
|
|
return Err(custom_error(
|
|
"NotFound",
|
|
format!("Cannot load module \"{}\".", specifier),
|
|
));
|
|
}
|
|
}
|
|
|
|
// If we're this far it means that there was an error for this module load.
|
|
let mut graph_data = self.graph_data.lock();
|
|
let err = graph_data
|
|
.modules
|
|
.get(&specifier)
|
|
.unwrap()
|
|
.as_ref()
|
|
.unwrap_err();
|
|
// this is the "pending" error we will return
|
|
let err = if let Some(error_class) = get_custom_error_class(err) {
|
|
if error_class == "NotFound" && maybe_referrer.is_some() && !is_dynamic {
|
|
// in situations where we were to try to load a module that wasn't
|
|
// emitted and we can't run the original source code (it isn't)
|
|
// JavaScript, we will load a blank module instead. This is
|
|
// usually caused by people exporting type only exports and not
|
|
// type checking.
|
|
if let Some(span) = graph_data.resolved_map.get(&specifier) {
|
|
log::warn!("{}: Cannot load module \"{}\".\n at {}\n If the source module contains only types, use `import type` and `export type` to import it instead.", colors::yellow("warning"), specifier, span);
|
|
return Ok(ModuleSource {
|
|
code: "".to_string(),
|
|
module_url_found: specifier.to_string(),
|
|
module_url_specified: specifier.to_string(),
|
|
});
|
|
}
|
|
}
|
|
custom_error(error_class, err.to_string())
|
|
} else {
|
|
anyhow!(err.to_string())
|
|
};
|
|
// if there is a pending graph error though we haven't returned, we
|
|
// will return that one
|
|
if let Some(graph_error) = graph_data.maybe_graph_error.take() {
|
|
log::debug!("returning cached graph error");
|
|
if let Some(span) = graph_data.resolved_map.get(&specifier) {
|
|
if !span.specifier.as_str().contains("$deno") {
|
|
return Err(custom_error(
|
|
get_module_graph_error_class(&graph_error),
|
|
format!("{}\n at {}", graph_error, span),
|
|
));
|
|
}
|
|
}
|
|
Err(graph_error.into())
|
|
} else {
|
|
Err(err)
|
|
}
|
|
}
|
|
|
|
// TODO(@kitsonk) this should be refactored to get it from the module graph
|
|
fn get_emit(&self, url: &Url) -> Option<(Vec<u8>, Option<Vec<u8>>)> {
|
|
match url.scheme() {
|
|
// we should only be looking for emits for schemes that denote external
|
|
// modules, which the disk_cache supports
|
|
"wasm" | "file" | "http" | "https" | "data" | "blob" => (),
|
|
_ => {
|
|
return None;
|
|
}
|
|
}
|
|
let emit_path = self
|
|
.dir
|
|
.gen_cache
|
|
.get_cache_filename_with_extension(url, "js")?;
|
|
let emit_map_path = self
|
|
.dir
|
|
.gen_cache
|
|
.get_cache_filename_with_extension(url, "js.map")?;
|
|
if let Ok(code) = self.dir.gen_cache.get(&emit_path) {
|
|
let maybe_map = if let Ok(map) = self.dir.gen_cache.get(&emit_map_path) {
|
|
Some(map)
|
|
} else {
|
|
None
|
|
};
|
|
Some((code, maybe_map))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO(@kitsonk) this is only temporary, but should be refactored to somewhere
|
|
// else, like a refactored file_fetcher.
|
|
impl SourceMapGetter for ProcState {
|
|
fn get_source_map(&self, file_name: &str) -> Option<Vec<u8>> {
|
|
if let Ok(specifier) = resolve_url(file_name) {
|
|
if let Some((code, maybe_map)) = self.get_emit(&specifier) {
|
|
let code = String::from_utf8(code).unwrap();
|
|
source_map_from_code(code).or(maybe_map)
|
|
} else if let Ok(source) = self.load(specifier, None, false) {
|
|
source_map_from_code(source.code)
|
|
} else {
|
|
None
|
|
}
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
fn get_source_line(
|
|
&self,
|
|
file_name: &str,
|
|
line_number: usize,
|
|
) -> Option<String> {
|
|
if let Ok(specifier) = resolve_url(file_name) {
|
|
self.file_fetcher.get_source(&specifier).map(|out| {
|
|
// Do NOT use .lines(): it skips the terminating empty line.
|
|
// (due to internally using .split_terminator() instead of .split())
|
|
let lines: Vec<&str> = out.source.split('\n').collect();
|
|
if line_number >= lines.len() {
|
|
format!(
|
|
"{} Couldn't format source line: Line {} is out of bounds (source may have changed at runtime)",
|
|
crate::colors::yellow("Warning"), line_number + 1,
|
|
)
|
|
} else {
|
|
lines[line_number].to_string()
|
|
}
|
|
})
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
fn source_map_from_code(code: String) -> Option<Vec<u8>> {
|
|
let lines: Vec<&str> = code.split('\n').collect();
|
|
if let Some(last_line) = lines.last() {
|
|
if last_line
|
|
.starts_with("//# sourceMappingURL=data:application/json;base64,")
|
|
{
|
|
let input = last_line.trim_start_matches(
|
|
"//# sourceMappingURL=data:application/json;base64,",
|
|
);
|
|
let decoded_map = base64::decode(input)
|
|
.expect("Unable to decode source map from emitted file.");
|
|
Some(decoded_map)
|
|
} else {
|
|
None
|
|
}
|
|
} else {
|
|
None
|
|
}
|
|
}
|