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x/deno/cli/main.rs

A modern runtime for JavaScript and TypeScript.
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
mod args;mod auth_tokens;mod cache;mod deno_std;mod emit;mod errors;mod file_fetcher;mod graph_util;mod http_util;mod js;mod lsp;mod module_loader;mod napi;mod node;mod npm;mod ops;mod proc_state;mod resolver;mod standalone;mod tools;mod tsc;mod util;mod version;mod worker;
use crate::args::flags_from_vec;use crate::args::DenoSubcommand;use crate::args::Flags;use crate::proc_state::ProcState;use crate::resolver::CliResolver;use crate::util::display;
use args::CliOptions;use deno_core::anyhow::Context;use deno_core::error::AnyError;use deno_core::error::JsError;use deno_core::v8_set_flags;use deno_runtime::colors;use deno_runtime::fmt_errors::format_js_error;use deno_runtime::tokio_util::run_local;use std::env;use std::iter::once;use std::path::PathBuf;
fn init_v8_flags(v8_flags: &[String]) { let v8_flags_includes_help = v8_flags .iter() .any(|flag| flag == "-help" || flag == "--help"); // Keep in sync with `standalone.rs`. let v8_flags = once("UNUSED_BUT_NECESSARY_ARG0".to_owned()) .chain(v8_flags.iter().cloned()) .collect::<Vec<_>>(); let unrecognized_v8_flags = v8_set_flags(v8_flags) .into_iter() .skip(1) .collect::<Vec<_>>(); if !unrecognized_v8_flags.is_empty() { for f in unrecognized_v8_flags { eprintln!("error: V8 did not recognize flag '{}'", f); } eprintln!("\nFor a list of V8 flags, use '--v8-flags=--help'"); std::process::exit(1); } if v8_flags_includes_help { std::process::exit(0); }}
async fn run_subcommand(flags: Flags) -> Result<i32, AnyError> { match flags.subcommand.clone() { DenoSubcommand::Bench(bench_flags) => { let cli_options = CliOptions::from_flags(flags)?; let bench_options = cli_options.resolve_bench_options(bench_flags)?; if cli_options.watch_paths().is_some() { tools::bench::run_benchmarks_with_watch(cli_options, bench_options) .await?; } else { tools::bench::run_benchmarks(cli_options, bench_options).await?; } Ok(0) } DenoSubcommand::Bundle(bundle_flags) => { tools::bundle::bundle(flags, bundle_flags).await?; Ok(0) } DenoSubcommand::Doc(doc_flags) => { tools::doc::print_docs(flags, doc_flags).await?; Ok(0) } DenoSubcommand::Eval(eval_flags) => { tools::run::eval_command(flags, eval_flags).await } DenoSubcommand::Cache(cache_flags) => { let ps = ProcState::build(flags).await?; ps.load_and_type_check_files(&cache_flags.files).await?; ps.cache_module_emits()?; Ok(0) } DenoSubcommand::Check(check_flags) => { let ps = ProcState::build(flags).await?; ps.load_and_type_check_files(&check_flags.files).await?; Ok(0) } DenoSubcommand::Compile(compile_flags) => { tools::standalone::compile(flags, compile_flags).await?; Ok(0) } DenoSubcommand::Coverage(coverage_flags) => { tools::coverage::cover_files(flags, coverage_flags).await?; Ok(0) } DenoSubcommand::Fmt(fmt_flags) => { let cli_options = CliOptions::from_flags(flags)?; let fmt_options = cli_options.resolve_fmt_options(fmt_flags)?; tools::fmt::format(cli_options, fmt_options).await?; Ok(0) } DenoSubcommand::Init(init_flags) => { tools::init::init_project(init_flags).await?; Ok(0) } DenoSubcommand::Info(info_flags) => { tools::info::info(flags, info_flags).await?; Ok(0) } DenoSubcommand::Install(install_flags) => { tools::installer::install_command(flags, install_flags).await?; Ok(0) } DenoSubcommand::Uninstall(uninstall_flags) => { tools::installer::uninstall(uninstall_flags.name, uninstall_flags.root)?; Ok(0) } DenoSubcommand::Lsp => { lsp::start().await?; Ok(0) } DenoSubcommand::Lint(lint_flags) => { if lint_flags.rules { tools::lint::print_rules_list(lint_flags.json); } else { let cli_options = CliOptions::from_flags(flags)?; let lint_options = cli_options.resolve_lint_options(lint_flags)?; tools::lint::lint(cli_options, lint_options).await?; } Ok(0) } DenoSubcommand::Repl(repl_flags) => { tools::repl::run(flags, repl_flags).await } DenoSubcommand::Run(run_flags) => { if run_flags.is_stdin() { tools::run::run_from_stdin(flags).await } else { tools::run::run_script(flags, run_flags).await } } DenoSubcommand::Task(task_flags) => { tools::task::execute_script(flags, task_flags).await } DenoSubcommand::Test(test_flags) => { if let Some(ref coverage_dir) = flags.coverage_dir { std::fs::create_dir_all(coverage_dir) .with_context(|| format!("Failed creating: {}", coverage_dir))?; // this is set in order to ensure spawned processes use the same // coverage directory env::set_var( "DENO_UNSTABLE_COVERAGE_DIR", PathBuf::from(coverage_dir).canonicalize()?, ); } let cli_options = CliOptions::from_flags(flags)?; let test_options = cli_options.resolve_test_options(test_flags)?;
if cli_options.watch_paths().is_some() { tools::test::run_tests_with_watch(cli_options, test_options).await?; } else { tools::test::run_tests(cli_options, test_options).await?; }
Ok(0) } DenoSubcommand::Completions(completions_flags) => { display::write_to_stdout_ignore_sigpipe(&completions_flags.buf)?; Ok(0) } DenoSubcommand::Types => { let types = tsc::get_types_declaration_file_text(flags.unstable); display::write_to_stdout_ignore_sigpipe(types.as_bytes())?; Ok(0) } DenoSubcommand::Upgrade(upgrade_flags) => { tools::upgrade::upgrade(flags, upgrade_flags).await?; Ok(0) } DenoSubcommand::Vendor(vendor_flags) => { tools::vendor::vendor(flags, vendor_flags).await?; Ok(0) } }}
fn setup_panic_hook() { // This function does two things inside of the panic hook: // - Tokio does not exit the process when a task panics, so we define a custom // panic hook to implement this behaviour. // - We print a message to stderr to indicate that this is a bug in Deno, and // should be reported to us. let orig_hook = std::panic::take_hook(); std::panic::set_hook(Box::new(move |panic_info| { eprintln!("\n============================================================"); eprintln!("Deno has panicked. This is a bug in Deno. Please report this"); eprintln!("at https://github.com/denoland/deno/issues/new."); eprintln!("If you can reliably reproduce this panic, include the"); eprintln!("reproduction steps and re-run with the RUST_BACKTRACE=1 env"); eprintln!("var set and include the backtrace in your report."); eprintln!(); eprintln!("Platform: {} {}", env::consts::OS, env::consts::ARCH); eprintln!("Version: {}", version::deno()); eprintln!("Args: {:?}", env::args().collect::<Vec<_>>()); eprintln!(); orig_hook(panic_info); std::process::exit(1); }));}
fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T { match result { Ok(value) => value, Err(error) => { let mut error_string = format!("{:?}", error); let mut error_code = 1;
if let Some(e) = error.downcast_ref::<JsError>() { error_string = format_js_error(e); } else if let Some(e) = error.downcast_ref::<args::LockfileError>() { error_string = e.to_string(); error_code = 10; }
eprintln!( "{}: {}", colors::red_bold("error"), error_string.trim_start_matches("error: ") ); std::process::exit(error_code); } }}
pub fn main() { setup_panic_hook();
util::unix::raise_fd_limit(); util::windows::ensure_stdio_open(); #[cfg(windows)] colors::enable_ansi(); // For Windows 10 deno_runtime::permissions::set_prompt_callbacks( Box::new(util::draw_thread::DrawThread::hide), Box::new(util::draw_thread::DrawThread::show), );
let args: Vec<String> = env::args().collect();
let future = async move { let standalone_res = match standalone::extract_standalone(args.clone()).await { Ok(Some((metadata, eszip))) => standalone::run(eszip, metadata).await, Ok(None) => Ok(()), Err(err) => Err(err), }; // TODO(bartlomieju): doesn't handle exit code set by the runtime properly unwrap_or_exit(standalone_res);
let flags = match flags_from_vec(args) { Ok(flags) => flags, Err(err @ clap::Error { .. }) if err.kind() == clap::ErrorKind::DisplayHelp || err.kind() == clap::ErrorKind::DisplayVersion => { err.print().unwrap(); std::process::exit(0); } Err(err) => unwrap_or_exit(Err(AnyError::from(err))), }; if !flags.v8_flags.is_empty() { init_v8_flags(&flags.v8_flags); }
util::logger::init(flags.log_level);
run_subcommand(flags).await };
let exit_code = unwrap_or_exit(run_local(future));
std::process::exit(exit_code);}