mirror of
https://github.com/denoland/deno.git
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683 lines
19 KiB
Rust
683 lines
19 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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//! The collection of APIs to be able to take `deno_graph` module graphs and
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//! populate a cache, emit files, and transform a graph into the structures for
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//! loading into an isolate.
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use crate::args::config_file::IgnoredCompilerOptions;
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use crate::args::ConfigFile;
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use crate::args::EmitConfigOptions;
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use crate::args::TsConfig;
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use crate::args::TypeCheckMode;
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use crate::cache::EmitCache;
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use crate::cache::FastInsecureHasher;
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use crate::cache::ParsedSourceCache;
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use crate::cache::TypeCheckCache;
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use crate::colors;
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use crate::diagnostics::Diagnostics;
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use crate::graph_util::GraphData;
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use crate::graph_util::ModuleEntry;
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use crate::tsc;
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use crate::version;
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use deno_ast::swc::bundler::Hook;
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use deno_ast::swc::bundler::ModuleRecord;
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use deno_ast::swc::common::Span;
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use deno_core::error::AnyError;
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use deno_core::parking_lot::RwLock;
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use deno_core::serde::Deserialize;
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use deno_core::serde::Deserializer;
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use deno_core::serde::Serialize;
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use deno_core::serde::Serializer;
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use deno_core::serde_json;
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use deno_core::serde_json::json;
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use deno_core::ModuleSpecifier;
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use deno_graph::MediaType;
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use deno_graph::ModuleGraphError;
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use deno_graph::ModuleKind;
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use deno_graph::ResolutionError;
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use once_cell::sync::Lazy;
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use regex::Regex;
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use std::fmt;
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use std::sync::Arc;
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/// A structure representing stats from an emit operation for a graph.
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#[derive(Clone, Debug, Default, Eq, PartialEq)]
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pub struct Stats(pub Vec<(String, u32)>);
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impl<'de> Deserialize<'de> for Stats {
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where
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D: Deserializer<'de>,
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{
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let items: Vec<(String, u32)> = Deserialize::deserialize(deserializer)?;
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Ok(Stats(items))
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}
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}
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impl Serialize for Stats {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: Serializer,
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{
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Serialize::serialize(&self.0, serializer)
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}
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}
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impl fmt::Display for Stats {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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writeln!(f, "Compilation statistics:")?;
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for (key, value) in self.0.clone() {
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writeln!(f, " {}: {}", key, value)?;
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}
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Ok(())
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}
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}
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/// Represents the "default" type library that should be used when type
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/// checking the code in the module graph. Note that a user provided config
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/// of `"lib"` would override this value.
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#[derive(Debug, Clone, Copy, Eq, Hash, PartialEq)]
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pub enum TsTypeLib {
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DenoWindow,
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DenoWorker,
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UnstableDenoWindow,
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UnstableDenoWorker,
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}
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impl Default for TsTypeLib {
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fn default() -> Self {
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Self::DenoWindow
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}
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}
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impl Serialize for TsTypeLib {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: Serializer,
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{
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let value = match self {
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Self::DenoWindow => vec!["deno.window".to_string()],
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Self::DenoWorker => vec!["deno.worker".to_string()],
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Self::UnstableDenoWindow => {
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vec!["deno.window".to_string(), "deno.unstable".to_string()]
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}
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Self::UnstableDenoWorker => {
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vec!["deno.worker".to_string(), "deno.unstable".to_string()]
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}
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};
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Serialize::serialize(&value, serializer)
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}
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}
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/// An enum that represents the base tsc configuration to return.
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pub enum TsConfigType {
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/// Return a configuration for bundling, using swc to emit the bundle. This is
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/// independent of type checking.
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Bundle,
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/// Return a configuration to use tsc to type check. This
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/// is independent of either bundling or emitting via swc.
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Check { lib: TsTypeLib },
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/// Return a configuration to use swc to emit single module files.
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Emit,
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}
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pub struct TsConfigWithIgnoredOptions {
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pub ts_config: TsConfig,
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pub maybe_ignored_options: Option<IgnoredCompilerOptions>,
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}
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/// For a given configuration type and optionally a configuration file,
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/// return a `TsConfig` struct and optionally any user configuration
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/// options that were ignored.
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pub fn get_ts_config_for_emit(
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config_type: TsConfigType,
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maybe_config_file: Option<&ConfigFile>,
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) -> Result<TsConfigWithIgnoredOptions, AnyError> {
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let mut ts_config = match config_type {
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TsConfigType::Bundle => TsConfig::new(json!({
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"checkJs": false,
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"emitDecoratorMetadata": false,
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"importsNotUsedAsValues": "remove",
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"inlineSourceMap": false,
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"inlineSources": false,
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"sourceMap": false,
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"jsx": "react",
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"jsxFactory": "React.createElement",
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"jsxFragmentFactory": "React.Fragment",
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})),
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TsConfigType::Check { lib } => TsConfig::new(json!({
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"allowJs": true,
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"allowSyntheticDefaultImports": true,
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"checkJs": false,
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"emitDecoratorMetadata": false,
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"experimentalDecorators": true,
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"incremental": true,
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"jsx": "react",
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"importsNotUsedAsValues": "remove",
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"inlineSourceMap": true,
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"inlineSources": true,
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"isolatedModules": true,
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"lib": lib,
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"module": "esnext",
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"moduleDetection": "force",
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"noEmit": true,
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"resolveJsonModule": true,
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"sourceMap": false,
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"strict": true,
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"target": "esnext",
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"tsBuildInfoFile": "deno:///.tsbuildinfo",
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"useDefineForClassFields": true,
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// TODO(@kitsonk) remove for Deno 2.0
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"useUnknownInCatchVariables": false,
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})),
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TsConfigType::Emit => TsConfig::new(json!({
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"checkJs": false,
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"emitDecoratorMetadata": false,
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"importsNotUsedAsValues": "remove",
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"inlineSourceMap": true,
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"inlineSources": true,
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"sourceMap": false,
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"jsx": "react",
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"jsxFactory": "React.createElement",
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"jsxFragmentFactory": "React.Fragment",
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"resolveJsonModule": true,
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})),
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};
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let maybe_ignored_options =
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ts_config.merge_tsconfig_from_config_file(maybe_config_file)?;
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Ok(TsConfigWithIgnoredOptions {
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ts_config,
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maybe_ignored_options,
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})
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}
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/// Transform the graph into root specifiers that we can feed `tsc`. We have to
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/// provide the media type for root modules because `tsc` does not "resolve" the
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/// media type like other modules, as well as a root specifier needs any
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/// redirects resolved. We need to include all the emittable files in
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/// the roots, so they get type checked and optionally emitted,
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/// otherwise they would be ignored if only imported into JavaScript.
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fn get_tsc_roots(
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graph_data: &GraphData,
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check_js: bool,
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) -> Vec<(ModuleSpecifier, MediaType)> {
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graph_data
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.entries()
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.into_iter()
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.filter_map(|(specifier, module_entry)| match module_entry {
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ModuleEntry::Module {
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media_type, code, ..
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} => match media_type {
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MediaType::TypeScript
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| MediaType::Tsx
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| MediaType::Mts
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| MediaType::Cts
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| MediaType::Jsx => Some((specifier.clone(), *media_type)),
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MediaType::JavaScript | MediaType::Mjs | MediaType::Cjs
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if check_js || has_ts_check(*media_type, code) =>
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{
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Some((specifier.clone(), *media_type))
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}
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_ => None,
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},
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_ => None,
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})
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.collect()
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}
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/// A hashing function that takes the source code, version and optionally a
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/// user provided config and generates a string hash which can be stored to
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/// determine if the cached emit is valid or not.
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pub fn get_source_hash(source_text: &str, emit_options_hash: u64) -> u64 {
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FastInsecureHasher::new()
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.write_str(source_text)
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.write_u64(emit_options_hash)
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.finish()
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}
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pub fn emit_parsed_source(
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emit_cache: &EmitCache,
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parsed_source_cache: &ParsedSourceCache,
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specifier: &ModuleSpecifier,
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media_type: MediaType,
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source: &Arc<str>,
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emit_options: &deno_ast::EmitOptions,
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emit_config_hash: u64,
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) -> Result<String, AnyError> {
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let source_hash = get_source_hash(source, emit_config_hash);
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if let Some(emit_code) =
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emit_cache.get_emit_code(specifier, Some(source_hash))
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{
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Ok(emit_code)
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} else {
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// this will use a cached version if it exists
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let parsed_source = parsed_source_cache.get_or_parse_module(
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specifier,
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source.clone(),
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media_type,
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)?;
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let transpiled_source = parsed_source.transpile(emit_options)?;
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debug_assert!(transpiled_source.source_map.is_none());
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emit_cache.set_emit_code(specifier, source_hash, &transpiled_source.text);
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Ok(transpiled_source.text)
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}
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}
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/// Options for performing a check of a module graph. Note that the decision to
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/// emit or not is determined by the `ts_config` settings.
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pub struct CheckOptions {
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/// The check flag from the option which can effect the filtering of
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/// diagnostics in the emit result.
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pub type_check_mode: TypeCheckMode,
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/// Set the debug flag on the TypeScript type checker.
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pub debug: bool,
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/// The module specifier to the configuration file, passed to tsc so that
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/// configuration related diagnostics are properly formed.
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pub maybe_config_specifier: Option<ModuleSpecifier>,
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/// The derived tsconfig that should be used when checking.
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pub ts_config: TsConfig,
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/// If true, `Check <specifier>` will be written to stdout for each root.
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pub log_checks: bool,
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/// If true, valid `.tsbuildinfo` files will be ignored and type checking
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/// will always occur.
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pub reload: bool,
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}
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/// The result of a check of a module graph.
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#[derive(Debug, Default)]
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pub struct CheckResult {
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pub diagnostics: Diagnostics,
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pub stats: Stats,
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}
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/// Given a set of roots and graph data, type check the module graph.
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///
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/// It is expected that it is determined if a check and/or emit is validated
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/// before the function is called.
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pub fn check(
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roots: &[(ModuleSpecifier, ModuleKind)],
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graph_data: Arc<RwLock<GraphData>>,
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cache: &TypeCheckCache,
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options: CheckOptions,
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) -> Result<CheckResult, AnyError> {
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let check_js = options.ts_config.get_check_js();
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let segment_graph_data = {
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let graph_data = graph_data.read();
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graph_data.graph_segment(roots).unwrap()
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};
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let check_hash = match get_check_hash(&segment_graph_data, &options) {
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CheckHashResult::NoFiles => return Ok(Default::default()),
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CheckHashResult::Hash(hash) => hash,
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};
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// do not type check if we know this is type checked
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if !options.reload && cache.has_check_hash(check_hash) {
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return Ok(Default::default());
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}
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let root_names = get_tsc_roots(&segment_graph_data, check_js);
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if options.log_checks {
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for (root, _) in roots {
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let root_str = root.to_string();
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// `$deno` specifiers are internal, don't print them.
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if !root_str.contains("$deno") {
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log::info!("{} {}", colors::green("Check"), root);
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}
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}
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}
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// while there might be multiple roots, we can't "merge" the build info, so we
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// try to retrieve the build info for first root, which is the most common use
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// case.
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let maybe_tsbuildinfo = if options.reload {
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None
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} else {
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cache.get_tsbuildinfo(&roots[0].0)
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};
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// to make tsc build info work, we need to consistently hash modules, so that
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// tsc can better determine if an emit is still valid or not, so we provide
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// that data here.
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let hash_data = vec![
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options.ts_config.as_bytes(),
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version::deno().as_bytes().to_owned(),
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];
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let response = tsc::exec(tsc::Request {
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config: options.ts_config,
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debug: options.debug,
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graph_data,
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hash_data,
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maybe_config_specifier: options.maybe_config_specifier,
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maybe_tsbuildinfo,
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root_names,
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})?;
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let diagnostics = if options.type_check_mode == TypeCheckMode::Local {
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response.diagnostics.filter(|d| {
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if let Some(file_name) = &d.file_name {
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!file_name.starts_with("http")
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} else {
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true
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}
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})
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} else {
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response.diagnostics
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};
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if let Some(tsbuildinfo) = response.maybe_tsbuildinfo {
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cache.set_tsbuildinfo(&roots[0].0, &tsbuildinfo);
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}
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if diagnostics.is_empty() {
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cache.add_check_hash(check_hash);
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}
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Ok(CheckResult {
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diagnostics,
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stats: response.stats,
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})
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}
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enum CheckHashResult {
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Hash(u64),
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NoFiles,
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}
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/// Gets a hash of the inputs for type checking. This can then
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/// be used to tell
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fn get_check_hash(
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graph_data: &GraphData,
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options: &CheckOptions,
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) -> CheckHashResult {
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let mut hasher = FastInsecureHasher::new();
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hasher.write_u8(match options.type_check_mode {
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TypeCheckMode::All => 0,
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TypeCheckMode::Local => 1,
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TypeCheckMode::None => 2,
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});
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hasher.write(&options.ts_config.as_bytes());
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let check_js = options.ts_config.get_check_js();
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let mut sorted_entries = graph_data.entries().collect::<Vec<_>>();
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sorted_entries.sort_by_key(|(s, _)| s.as_str()); // make it deterministic
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let mut has_file = false;
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let mut has_file_to_type_check = false;
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for (specifier, module_entry) in sorted_entries {
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if let ModuleEntry::Module {
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code, media_type, ..
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} = module_entry
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{
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let ts_check = has_ts_check(*media_type, code);
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if ts_check {
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has_file_to_type_check = true;
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}
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match media_type {
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MediaType::TypeScript
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| MediaType::Dts
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| MediaType::Dmts
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| MediaType::Dcts
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| MediaType::Mts
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| MediaType::Cts
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| MediaType::Tsx => {
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has_file = true;
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has_file_to_type_check = true;
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}
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MediaType::JavaScript
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| MediaType::Mjs
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| MediaType::Cjs
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| MediaType::Jsx => {
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has_file = true;
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if !check_js && !ts_check {
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continue;
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}
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}
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MediaType::Json
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| MediaType::TsBuildInfo
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| MediaType::SourceMap
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| MediaType::Wasm
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| MediaType::Unknown => continue,
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}
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hasher.write_str(specifier.as_str());
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hasher.write_str(code);
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}
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}
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if !has_file || !check_js && !has_file_to_type_check {
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// no files to type check
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CheckHashResult::NoFiles
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} else {
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CheckHashResult::Hash(hasher.finish())
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}
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}
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/// An adapter struct to make a deno_graph::ModuleGraphError display as expected
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/// in the Deno CLI.
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#[derive(Debug)]
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pub struct GraphError(pub ModuleGraphError);
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impl std::error::Error for GraphError {}
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impl From<ModuleGraphError> for GraphError {
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fn from(err: ModuleGraphError) -> Self {
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Self(err)
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}
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}
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impl fmt::Display for GraphError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match &self.0 {
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ModuleGraphError::ResolutionError(err) => {
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if matches!(
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err,
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ResolutionError::InvalidDowngrade { .. }
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| ResolutionError::InvalidLocalImport { .. }
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) {
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write!(f, "{}", err.to_string_with_range())
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} else {
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self.0.fmt(f)
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}
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}
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_ => self.0.fmt(f),
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}
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}
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}
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/// This contains the logic for Deno to rewrite the `import.meta` when bundling.
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pub struct BundleHook;
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|
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impl Hook for BundleHook {
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fn get_import_meta_props(
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&self,
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span: Span,
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module_record: &ModuleRecord,
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) -> Result<Vec<deno_ast::swc::ast::KeyValueProp>, AnyError> {
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use deno_ast::swc::ast;
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Ok(vec![
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ast::KeyValueProp {
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key: ast::PropName::Ident(ast::Ident::new("url".into(), span)),
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value: Box::new(ast::Expr::Lit(ast::Lit::Str(ast::Str {
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span,
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value: module_record.file_name.to_string().into(),
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raw: None,
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}))),
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},
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ast::KeyValueProp {
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key: ast::PropName::Ident(ast::Ident::new("main".into(), span)),
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value: Box::new(if module_record.is_entry {
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ast::Expr::Member(ast::MemberExpr {
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span,
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obj: Box::new(ast::Expr::MetaProp(ast::MetaPropExpr {
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span,
|
|
kind: ast::MetaPropKind::ImportMeta,
|
|
})),
|
|
prop: ast::MemberProp::Ident(ast::Ident::new("main".into(), span)),
|
|
})
|
|
} else {
|
|
ast::Expr::Lit(ast::Lit::Bool(ast::Bool { span, value: false }))
|
|
}),
|
|
},
|
|
])
|
|
}
|
|
}
|
|
|
|
impl From<TsConfig> for deno_ast::EmitOptions {
|
|
fn from(config: TsConfig) -> Self {
|
|
let options: EmitConfigOptions = serde_json::from_value(config.0).unwrap();
|
|
let imports_not_used_as_values =
|
|
match options.imports_not_used_as_values.as_str() {
|
|
"preserve" => deno_ast::ImportsNotUsedAsValues::Preserve,
|
|
"error" => deno_ast::ImportsNotUsedAsValues::Error,
|
|
_ => deno_ast::ImportsNotUsedAsValues::Remove,
|
|
};
|
|
let (transform_jsx, jsx_automatic, jsx_development) =
|
|
match options.jsx.as_str() {
|
|
"react" => (true, false, false),
|
|
"react-jsx" => (true, true, false),
|
|
"react-jsxdev" => (true, true, true),
|
|
_ => (false, false, false),
|
|
};
|
|
deno_ast::EmitOptions {
|
|
emit_metadata: options.emit_decorator_metadata,
|
|
imports_not_used_as_values,
|
|
inline_source_map: options.inline_source_map,
|
|
inline_sources: options.inline_sources,
|
|
source_map: options.source_map,
|
|
jsx_automatic,
|
|
jsx_development,
|
|
jsx_factory: options.jsx_factory,
|
|
jsx_fragment_factory: options.jsx_fragment_factory,
|
|
jsx_import_source: options.jsx_import_source,
|
|
transform_jsx,
|
|
var_decl_imports: false,
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Matches the `@ts-check` pragma.
|
|
static TS_CHECK_RE: Lazy<Regex> =
|
|
Lazy::new(|| Regex::new(r#"(?i)^\s*@ts-check(?:\s+|$)"#).unwrap());
|
|
|
|
fn has_ts_check(media_type: MediaType, file_text: &str) -> bool {
|
|
match &media_type {
|
|
MediaType::JavaScript
|
|
| MediaType::Mjs
|
|
| MediaType::Cjs
|
|
| MediaType::Jsx => get_leading_comments(file_text)
|
|
.iter()
|
|
.any(|text| TS_CHECK_RE.is_match(text)),
|
|
_ => false,
|
|
}
|
|
}
|
|
|
|
fn get_leading_comments(file_text: &str) -> Vec<String> {
|
|
let mut chars = file_text.chars().peekable();
|
|
|
|
// skip over the shebang
|
|
if file_text.starts_with("#!") {
|
|
// skip until the end of the line
|
|
for c in chars.by_ref() {
|
|
if c == '\n' {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
let mut results = Vec::new();
|
|
// now handle the comments
|
|
while chars.peek().is_some() {
|
|
// skip over any whitespace
|
|
while chars
|
|
.peek()
|
|
.map(|c| char::is_whitespace(*c))
|
|
.unwrap_or(false)
|
|
{
|
|
chars.next();
|
|
}
|
|
|
|
if chars.next() != Some('/') {
|
|
break;
|
|
}
|
|
match chars.next() {
|
|
Some('/') => {
|
|
let mut text = String::new();
|
|
for c in chars.by_ref() {
|
|
if c == '\n' {
|
|
break;
|
|
} else {
|
|
text.push(c);
|
|
}
|
|
}
|
|
results.push(text);
|
|
}
|
|
Some('*') => {
|
|
let mut text = String::new();
|
|
while let Some(c) = chars.next() {
|
|
if c == '*' && chars.peek() == Some(&'/') {
|
|
chars.next();
|
|
break;
|
|
} else {
|
|
text.push(c);
|
|
}
|
|
}
|
|
results.push(text);
|
|
}
|
|
_ => break,
|
|
}
|
|
}
|
|
results
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
use deno_ast::MediaType;
|
|
|
|
use super::get_leading_comments;
|
|
use super::has_ts_check;
|
|
|
|
#[test]
|
|
fn get_leading_comments_test() {
|
|
assert_eq!(
|
|
get_leading_comments(
|
|
"#!/usr/bin/env deno\r\n// test\n/* 1 *//*2*///3\n//\n /**/ /*4 */"
|
|
),
|
|
vec![
|
|
" test".to_string(),
|
|
" 1 ".to_string(),
|
|
"2".to_string(),
|
|
"3".to_string(),
|
|
"".to_string(),
|
|
"".to_string(),
|
|
"4 ".to_string(),
|
|
]
|
|
);
|
|
assert_eq!(
|
|
get_leading_comments("//1 /* */ \na;"),
|
|
vec!["1 /* */ ".to_string(),]
|
|
);
|
|
assert_eq!(get_leading_comments("//"), vec!["".to_string()]);
|
|
}
|
|
|
|
#[test]
|
|
fn has_ts_check_test() {
|
|
assert!(has_ts_check(
|
|
MediaType::JavaScript,
|
|
"// @ts-check\nconsole.log(5);"
|
|
));
|
|
assert!(has_ts_check(
|
|
MediaType::JavaScript,
|
|
"// deno-lint-ignore\n// @ts-check\n"
|
|
));
|
|
assert!(!has_ts_check(
|
|
MediaType::JavaScript,
|
|
"test;\n// @ts-check\n"
|
|
));
|
|
assert!(!has_ts_check(
|
|
MediaType::JavaScript,
|
|
"// ts-check\nconsole.log(5);"
|
|
));
|
|
}
|
|
}
|