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feat(unstable): Support --watch flag for bundle and fmt subcommands (#8276)

Browse source 
This commit adds support for "--watch" flag for "bundle" 
and "fmt" subcommands.

In addition to this, it refactors "run --watch" command so that
module resolution will occur every time the file watcher detects 
file addition/deletion, which allows the watcher to observe a file 
that is newly added to the dependency as well.
This commit is contained in:
Yusuke Tanaka 2020-11-23 05:45:44 +09:00 committed by GitHub
parent 17d4cd9213
commit e3f73d3ec0
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
8 changed files with 635 additions and 167 deletions
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145
cli/file_watcher.rs
View file

@ -4,7 +4,7 @@ use crate::colors;
use core::task::{Context, Poll};
use deno_core::error::AnyError;
use deno_core::futures::stream::{Stream, StreamExt};
use deno_core::futures::Future;
use deno_core::futures::{Future, FutureExt};
use notify::event::Event as NotifyEvent;
use notify::event::EventKind;
use notify::Config;
@ -18,22 +18,21 @@ use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use std::time::Duration;
use tokio::select;
use tokio::time::{interval, Interval};
use tokio::time::{delay_for, Delay};
const DEBOUNCE_INTERVAL_MS: Duration = Duration::from_millis(200);
// TODO(bartlomieju): rename
type WatchFuture = Pin<Box<dyn Future<Output = Result<(), AnyError>>>>;
type FileWatcherFuture<T> = Pin<Box<dyn Future<Output = Result<T, AnyError>>>>;
struct Debounce {
interval: Interval,
delay: Delay,
event_detected: Arc<AtomicBool>,
}
impl Debounce {
fn new() -> Self {
Self {
interval: interval(DEBOUNCE_INTERVAL_MS),
delay: delay_for(DEBOUNCE_INTERVAL_MS),
event_detected: Arc::new(AtomicBool::new(false)),
}
}
@ -53,13 +52,18 @@ impl Stream for Debounce {
inner.event_detected.store(false, Ordering::Relaxed);
Poll::Ready(Some(()))
} else {
let _ = inner.interval.poll_tick(cx);
Poll::Pending
match inner.delay.poll_unpin(cx) {
Poll::Ready(_) => {
inner.delay = delay_for(DEBOUNCE_INTERVAL_MS);
Poll::Pending
}
Poll::Pending => Poll::Pending,
}
}
}
}
async fn error_handler(watch_future: WatchFuture) {
async fn error_handler(watch_future: FileWatcherFuture<()>) {
let result = watch_future.await;
if let Err(err) = result {
let msg = format!("{}: {}", colors::red_bold("error"), err.to_string(),);
@ -67,19 +71,37 @@ async fn error_handler(watch_future: WatchFuture) {
}
}
pub async fn watch_func<F>(
paths: &[PathBuf],
closure: F,
/// This function adds watcher functionality to subcommands like `fmt` or `lint`.
/// The difference from [`watch_func_with_module_resolution`] is that this doesn't depend on
/// [`ModuleGraph`].
///
/// - `target_resolver` is used for resolving file paths to be watched at every restarting of the watcher. The
/// return value of this closure will then be passed to `operation` as an argument.
///
/// - `operation` is the actual operation we want to run every time the watcher detects file
/// changes. For example, in the case where we would like to apply `fmt`, then `operation` would
/// have the logic for it like calling `format_source_files`.
///
/// - `job_name` is just used for printing watcher status to terminal.
///
/// Note that the watcher will stop working if `target_resolver` fails at some point.
///
/// [`ModuleGraph`]: crate::module_graph::Graph
pub async fn watch_func<F, G>(
target_resolver: F,
operation: G,
job_name: &str,
) -> Result<(), AnyError>
where
F: Fn() -> WatchFuture,
F: Fn() -> Result<Vec<PathBuf>, AnyError>,
G: Fn(Vec<PathBuf>) -> FileWatcherFuture<()>,
{
let mut debounce = Debounce::new();
// This binding is required for the watcher to work properly without being dropped.
let _watcher = new_watcher(paths, &debounce)?;
loop {
let func = error_handler(closure());
let paths = target_resolver()?;
let _watcher = new_watcher(&paths, &debounce)?;
let func = error_handler(operation(paths));
let mut is_file_changed = false;
select! {
_ = debounce.next() => {
@ -90,11 +112,95 @@ where
);
},
_ = func => {},
}
};
if !is_file_changed {
info!(
"{} Process terminated! Restarting on file change...",
"{} {} finished! Restarting on file change...",
colors::intense_blue("Watcher"),
job_name,
);
debounce.next().await;
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
);
}
}
}
/// This function adds watcher functionality to subcommands like `run` or `bundle`.
/// The difference from [`watch_func`] is that this does depend on [`ModuleGraph`].
///
/// - `module_resolver` is used for both resolving file paths to be watched at every restarting
/// of the watcher and building [`ModuleGraph`] or [`ModuleSpecifier`] which will then be passed
/// to `operation`.
///
/// - `operation` is the actual operation we want to run every time the watcher detects file
/// changes. For example, in the case where we would like to bundle, then `operation` would
/// have the logic for it like doing bundle with the help of [`ModuleGraph`].
///
/// - `job_name` is just used for printing watcher status to terminal.
///
/// Note that the watcher will try to continue watching files using the previously resolved
/// data if `module_resolver` fails at some point, which means the watcher won't work at all
/// if `module_resolver` fails at the first attempt.
///
/// [`ModuleGraph`]: crate::module_graph::Graph
/// [`ModuleSpecifier`]: deno_core::ModuleSpecifier
pub async fn watch_func_with_module_resolution<F, G, T>(
module_resolver: F,
operation: G,
job_name: &str,
) -> Result<(), AnyError>
where
F: Fn() -> FileWatcherFuture<(Vec<PathBuf>, T)>,
G: Fn(T) -> FileWatcherFuture<()>,
T: Clone,
{
let mut debounce = Debounce::new();
// Store previous data. If module resolution fails at some point, the watcher will try to
// continue watching files using these data.
let mut paths = None;
let mut module = None;
loop {
match module_resolver().await {
Ok((next_paths, next_module)) => {
paths = Some(next_paths);
module = Some(next_module);
}
Err(e) => {
// If at least one of `paths` and `module` is `None`, the watcher cannot decide which files
// should be watched. So return the error immediately without watching anything.
if paths.is_none() || module.is_none() {
return Err(e);
}
}
}
// These `unwrap`s never cause panic since `None` is already checked above.
let cur_paths = paths.clone().unwrap();
let cur_module = module.clone().unwrap();
let _watcher = new_watcher(&cur_paths, &debounce)?;
let func = error_handler(operation(cur_module));
let mut is_file_changed = false;
select! {
_ = debounce.next() => {
is_file_changed = true;
info!(
"{} File change detected! Restarting!",
colors::intense_blue("Watcher"),
);
},
_ = func => {},
};
if !is_file_changed {
info!(
"{} {} finished! Restarting on file change...",
colors::intense_blue("Watcher"),
job_name,
);
debounce.next().await;
info!(
@ -125,7 +231,8 @@ fn new_watcher(
watcher.configure(Config::PreciseEvents(true)).unwrap();
for path in paths {
watcher.watch(path, RecursiveMode::NonRecursive)?;
// Ignore any error e.g. `PathNotFound`
let _ = watcher.watch(path, RecursiveMode::NonRecursive);
}
Ok(watcher)

66
cli/flags.rs
View file

@ -361,6 +361,7 @@ fn types_parse(flags: &mut Flags, _matches: &clap::ArgMatches) {
}
fn fmt_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
flags.watch = matches.is_present("watch");
let files = match matches.values_of("files") {
Some(f) => f.map(PathBuf::from).collect(),
None => vec![],
@ -418,6 +419,8 @@ fn bundle_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
None
};
flags.watch = matches.is_present("watch");
flags.subcommand = DenoSubcommand::Bundle {
source_file,
out_file,
@ -723,6 +726,7 @@ Ignore formatting a file by adding an ignore comment at the top of the file:
.multiple(true)
.required(false),
)
.arg(watch_arg())
}
fn repl_subcommand<'a, 'b>() -> App<'a, 'b> {
@ -793,6 +797,7 @@ fn bundle_subcommand<'a, 'b>() -> App<'a, 'b> {
.required(true),
)
.arg(Arg::with_name("out_file").takes_value(true).required(false))
.arg(watch_arg())
.about("Bundle module and dependencies into single file")
.long_about(
"Output a single JavaScript file with all dependencies.
@ -1855,6 +1860,44 @@ mod tests {
..Flags::default()
}
);
let r = flags_from_vec_safe(svec!["deno", "fmt", "--watch", "--unstable"]);
assert_eq!(
r.unwrap(),
Flags {
subcommand: DenoSubcommand::Fmt {
ignore: vec![],
check: false,
files: vec![],
},
watch: true,
unstable: true,
..Flags::default()
}
);
let r = flags_from_vec_safe(svec![
"deno",
"fmt",
"--check",
"--watch",
"--unstable",
"foo.ts",
"--ignore=bar.js"
]);
assert_eq!(
r.unwrap(),
Flags {
subcommand: DenoSubcommand::Fmt {
ignore: vec![PathBuf::from("bar.js")],
check: true,
files: vec![PathBuf::from("foo.ts")],
},
watch: true,
unstable: true,
..Flags::default()
}
);
}
#[test]
@ -2405,6 +2448,29 @@ mod tests {
);
}
#[test]
fn bundle_watch() {
let r = flags_from_vec_safe(svec![
"deno",
"bundle",
"--watch",
"--unstable",
"source.ts"
]);
assert_eq!(
r.unwrap(),
Flags {
subcommand: DenoSubcommand::Bundle {
source_file: "source.ts".to_string(),
out_file: None,
},
watch: true,
unstable: true,
..Flags::default()
}
)
}
#[test]
fn run_import_map() {
let r = flags_from_vec_safe(svec![

30
cli/fs_util.rs
View file

@ -88,8 +88,8 @@ pub fn is_supported_ext(path: &Path) -> bool {
/// Collects file paths that satisfy the given predicate, by recursively walking `files`.
/// If the walker visits a path that is listed in `ignore`, it skips descending into the directory.
pub fn collect_files<P>(
files: Vec<PathBuf>,
ignore: Vec<PathBuf>,
files: &[PathBuf],
ignore: &[PathBuf],
predicate: P,
) -> Result<Vec<PathBuf>, AnyError>
where
@ -99,15 +99,12 @@ where
// retain only the paths which exist and ignore the rest
let canonicalized_ignore: Vec<PathBuf> = ignore
.into_iter()
.iter()
.filter_map(|i| i.canonicalize().ok())
.collect();
let files = if files.is_empty() {
vec![std::env::current_dir()?]
} else {
files
};
let cur_dir = [std::env::current_dir()?];
let files = if files.is_empty() { &cur_dir } else { files };
for file in files {
for entry in WalkDir::new(file)
@ -232,15 +229,14 @@ mod tests {
let ignore_dir_files = ["g.d.ts", ".gitignore"];
create_files(&ignore_dir_path, &ignore_dir_files);
let result =
collect_files(vec![root_dir_path], vec![ignore_dir_path], |path| {
// exclude dotfiles
path
.file_name()
.and_then(|f| f.to_str())
.map_or(false, |f| !f.starts_with('.'))
})
.unwrap();
let result = collect_files(&[root_dir_path], &[ignore_dir_path], |path| {
// exclude dotfiles
path
.file_name()
.and_then(|f| f.to_str())
.map_or(false, |f| !f.starts_with('.'))
})
.unwrap();
let expected = [
"a.ts",
"b.js",

291
cli/main.rs
View file

@ -302,84 +302,130 @@ async fn bundle_command(
source_file: String,
out_file: Option<PathBuf>,
) -> Result<(), AnyError> {
let module_specifier = ModuleSpecifier::resolve_url_or_path(&source_file)?;
debug!(">>>>> bundle START");
let program_state = ProgramState::new(flags.clone())?;
info!(
"{} {}",
colors::green("Bundle"),
module_specifier.to_string()
);
let handler = Rc::new(RefCell::new(FetchHandler::new(
&program_state,
// when bundling, dynamic imports are only access for their type safety,
// therefore we will allow the graph to access any module.
Permissions::allow_all(),
)?));
let mut builder = module_graph::GraphBuilder::new(
handler,
program_state.maybe_import_map.clone(),
program_state.lockfile.clone(),
);
builder.add(&module_specifier, false).await?;
let graph = builder.get_graph();
let debug = flags.log_level == Some(log::Level::Debug);
if !flags.no_check {
// TODO(@kitsonk) support bundling for workers
let lib = if flags.unstable {
module_graph::TypeLib::UnstableDenoWindow
} else {
module_graph::TypeLib::DenoWindow
};
let graph = graph.clone();
let result_info = graph.check(module_graph::CheckOptions {
debug,
emit: false,
lib,
maybe_config_path: flags.config_path.clone(),
reload: flags.reload,
})?;
debug!("{}", result_info.stats);
if let Some(ignored_options) = result_info.maybe_ignored_options {
eprintln!("{}", ignored_options);
let module_resolver = || {
let flags = flags.clone();
let source_file = source_file.clone();
async move {
let module_specifier =
ModuleSpecifier::resolve_url_or_path(&source_file)?;
debug!(">>>>> bundle START");
let program_state = ProgramState::new(flags.clone())?;
info!(
"{} {}",
colors::green("Bundle"),
module_specifier.to_string()
);
let handler = Rc::new(RefCell::new(FetchHandler::new(
&program_state,
// when bundling, dynamic imports are only access for their type safety,
// therefore we will allow the graph to access any module.
Permissions::allow_all(),
)?));
let mut builder = module_graph::GraphBuilder::new(
handler,
program_state.maybe_import_map.clone(),
program_state.lockfile.clone(),
);
builder.add(&module_specifier, false).await?;
let module_graph = builder.get_graph();
if !flags.no_check {
// TODO(@kitsonk) support bundling for workers
let lib = if flags.unstable {
module_graph::TypeLib::UnstableDenoWindow
} else {
module_graph::TypeLib::DenoWindow
};
let result_info =
module_graph.clone().check(module_graph::CheckOptions {
debug,
emit: false,
lib,
maybe_config_path: flags.config_path.clone(),
reload: flags.reload,
})?;
debug!("{}", result_info.stats);
if let Some(ignored_options) = result_info.maybe_ignored_options {
eprintln!("{}", ignored_options);
}
if !result_info.diagnostics.is_empty() {
return Err(generic_error(result_info.diagnostics.to_string()));
}
}
let mut paths_to_watch: Vec<PathBuf> = module_graph
.get_modules()
.iter()
.filter_map(|specifier| specifier.as_url().to_file_path().ok())
.collect();
if let Some(import_map) = program_state.flags.import_map_path.as_ref() {
paths_to_watch
.push(fs_util::resolve_from_cwd(std::path::Path::new(import_map))?);
}
Ok((paths_to_watch, module_graph))
}
if !result_info.diagnostics.is_empty() {
return Err(generic_error(result_info.diagnostics.to_string()));
.boxed_local()
};
let operation = |module_graph: module_graph::Graph| {
let flags = flags.clone();
let out_file = out_file.clone();
async move {
let (output, stats, maybe_ignored_options) =
module_graph.bundle(module_graph::BundleOptions {
debug,
maybe_config_path: flags.config_path,
})?;
match maybe_ignored_options {
Some(ignored_options) if flags.no_check => {
eprintln!("{}", ignored_options);
}
_ => {}
}
debug!("{}", stats);
debug!(">>>>> bundle END");
if let Some(out_file) = out_file.as_ref() {
let output_bytes = output.as_bytes();
let output_len = output_bytes.len();
fs_util::write_file(out_file, output_bytes, 0o644)?;
info!(
"{} {:?} ({})",
colors::green("Emit"),
out_file,
colors::gray(&info::human_size(output_len as f64))
);
} else {
println!("{}", output);
}
Ok(())
}
}
.boxed_local()
};
let (output, stats, maybe_ignored_options) =
graph.bundle(module_graph::BundleOptions {
debug,
maybe_config_path: flags.config_path,
})?;
if flags.no_check && maybe_ignored_options.is_some() {
let ignored_options = maybe_ignored_options.unwrap();
eprintln!("{}", ignored_options);
}
debug!("{}", stats);
debug!(">>>>> bundle END");
if let Some(out_file_) = out_file.as_ref() {
let output_bytes = output.as_bytes();
let output_len = output_bytes.len();
fs_util::write_file(out_file_, output_bytes, 0o644)?;
info!(
"{} {:?} ({})",
colors::green("Emit"),
out_file_,
colors::gray(&info::human_size(output_len as f64))
);
if flags.watch {
file_watcher::watch_func_with_module_resolution(
module_resolver,
operation,
"Bundle",
)
.await?;
} else {
println!("{}", output);
let (_, module_graph) = module_resolver().await?;
operation(module_graph).await?;
}
Ok(())
}
@ -504,6 +550,20 @@ async fn doc_command(
}
}
async fn format_command(
flags: Flags,
args: Vec<PathBuf>,
ignore: Vec<PathBuf>,
check: bool,
) -> Result<(), AnyError> {
if args.len() == 1 && args[0].to_string_lossy() == "-" {
return tools::fmt::format_stdin(check);
}
tools::fmt::format(args, ignore, check, flags.watch).await?;
Ok(())
}
async fn run_repl(flags: Flags) -> Result<(), AnyError> {
let main_module =
ModuleSpecifier::resolve_url_or_path("./$deno$repl.ts").unwrap();
@ -548,44 +608,49 @@ async fn run_from_stdin(flags: Flags) -> Result<(), AnyError> {
}
async fn run_with_watch(flags: Flags, script: String) -> Result<(), AnyError> {
let main_module = ModuleSpecifier::resolve_url_or_path(&script)?;
let program_state = ProgramState::new(flags.clone())?;
let handler = Rc::new(RefCell::new(FetchHandler::new(
&program_state,
Permissions::allow_all(),
)?));
let mut builder = module_graph::GraphBuilder::new(
handler,
program_state.maybe_import_map.clone(),
program_state.lockfile.clone(),
);
builder.add(&main_module, false).await?;
let module_graph = builder.get_graph();
// Find all local files in graph
let mut paths_to_watch: Vec<PathBuf> = module_graph
.get_modules()
.iter()
.filter(|specifier| specifier.as_url().scheme() == "file")
.map(|specifier| specifier.as_url().to_file_path().unwrap())
.collect();
if let Some(import_map) = program_state.flags.import_map_path.clone() {
paths_to_watch.push(
fs_util::resolve_from_cwd(std::path::Path::new(&import_map)).unwrap(),
);
}
// FIXME(bartlomieju): new file watcher is created on after each restart
file_watcher::watch_func(&paths_to_watch, move || {
// FIXME(bartlomieju): ProgramState must be created on each restart - otherwise file fetcher
// will use cached source files
let gs = ProgramState::new(flags.clone()).unwrap();
let permissions = Permissions::from_flags(&flags);
let main_module = main_module.clone();
let module_resolver = || {
let script = script.clone();
let flags = flags.clone();
async move {
let mut worker = MainWorker::new(&gs, main_module.clone(), permissions);
let main_module = ModuleSpecifier::resolve_url_or_path(&script)?;
let program_state = ProgramState::new(flags)?;
let handler = Rc::new(RefCell::new(FetchHandler::new(
&program_state,
Permissions::allow_all(),
)?));
let mut builder = module_graph::GraphBuilder::new(
handler,
program_state.maybe_import_map.clone(),
program_state.lockfile.clone(),
);
builder.add(&main_module, false).await?;
let module_graph = builder.get_graph();
// Find all local files in graph
let mut paths_to_watch: Vec<PathBuf> = module_graph
.get_modules()
.iter()
.filter_map(|specifier| specifier.as_url().to_file_path().ok())
.collect();
if let Some(import_map) = program_state.flags.import_map_path.as_ref() {
paths_to_watch
.push(fs_util::resolve_from_cwd(std::path::Path::new(import_map))?);
}
Ok((paths_to_watch, main_module))
}
.boxed_local()
};
let operation = |main_module: ModuleSpecifier| {
let flags = flags.clone();
let permissions = Permissions::from_flags(&flags);
async move {
let main_module = main_module.clone();
let program_state = ProgramState::new(flags)?;
let mut worker =
MainWorker::new(&program_state, main_module.clone(), permissions);
debug!("main_module {}", main_module);
worker.execute_module(&main_module).await?;
worker.execute("window.dispatchEvent(new Event('load'))")?;
@ -594,7 +659,13 @@ async fn run_with_watch(flags: Flags, script: String) -> Result<(), AnyError> {
Ok(())
}
.boxed_local()
})
};
file_watcher::watch_func_with_module_resolution(
module_resolver,
operation,
"Process",
)
.await
}
@ -806,7 +877,7 @@ pub fn main() {
check,
files,
ignore,
} => tools::fmt::format(files, check, ignore).boxed_local(),
} => format_command(flags, files, ignore, check).boxed_local(),
DenoSubcommand::Info { file, json } => {
info_command(flags, file, json).boxed_local()
}

223
cli/tests/integration_tests.rs
View file

@ -474,6 +474,53 @@ fn fmt_test() {
assert_eq!(expected, actual);
}
#[test]
fn fmt_watch_test() {
let t = TempDir::new().expect("tempdir fail");
let fixed = util::root_path().join("cli/tests/badly_formatted_fixed.js");
let badly_formatted_original =
util::root_path().join("cli/tests/badly_formatted.mjs");
let badly_formatted = t.path().join("badly_formatted.js");
std::fs::copy(&badly_formatted_original, &badly_formatted)
.expect("Failed to copy file");
let mut child = util::deno_cmd()
.current_dir(util::root_path())
.arg("fmt")
.arg(&badly_formatted)
.arg("--watch")
.arg("--unstable")
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped())
.spawn()
.expect("Failed to spawn script");
let stderr = child.stderr.as_mut().unwrap();
let mut stderr_lines =
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
// TODO(lucacasonato): remove this timeout. It seems to be needed on Linux.
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("badly_formatted.js"));
let expected = std::fs::read_to_string(fixed.clone()).unwrap();
let actual = std::fs::read_to_string(badly_formatted.clone()).unwrap();
assert_eq!(expected, actual);
// Change content of the file again to be badly formatted
std::fs::copy(&badly_formatted_original, &badly_formatted)
.expect("Failed to copy file");
std::thread::sleep(std::time::Duration::from_secs(1));
// Check if file has been automatically formatted by watcher
let expected = std::fs::read_to_string(fixed).unwrap();
let actual = std::fs::read_to_string(badly_formatted).unwrap();
assert_eq!(expected, actual);
child.kill().unwrap();
drop(t);
}
#[test]
fn fmt_stdin_error() {
use std::io::Write;
@ -1142,6 +1189,103 @@ fn bundle_import_map_no_check() {
assert_eq!(output.stderr, b"");
}
#[test]
fn bundle_js_watch() {
use std::path::PathBuf;
// Test strategy extends this of test bundle_js by adding watcher
let t = TempDir::new().expect("tempdir fail");
let file_to_watch = t.path().join("file_to_watch.js");
std::fs::write(&file_to_watch, "console.log('Hello world');")
.expect("error writing file");
assert!(file_to_watch.is_file());
let t = TempDir::new().expect("tempdir fail");
let bundle = t.path().join("mod6.bundle.js");
let mut deno = util::deno_cmd()
.current_dir(util::root_path())
.arg("bundle")
.arg(&file_to_watch)
.arg(&bundle)
.arg("--watch")
.arg("--unstable")
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped())
.spawn()
.expect("failed to spawn script");
let stderr = deno.stderr.as_mut().unwrap();
let mut stderr_lines =
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("file_to_watch.js"));
assert!(stderr_lines.next().unwrap().contains("mod6.bundle.js"));
let file = PathBuf::from(&bundle);
assert!(file.is_file());
assert!(stderr_lines.next().unwrap().contains("Bundle finished!"));
std::fs::write(&file_to_watch, "console.log('Hello world2');")
.expect("error writing file");
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines
.next()
.unwrap()
.contains("File change detected!"));
assert!(stderr_lines.next().unwrap().contains("file_to_watch.js"));
assert!(stderr_lines.next().unwrap().contains("mod6.bundle.js"));
let file = PathBuf::from(&bundle);
assert!(file.is_file());
assert!(stderr_lines.next().unwrap().contains("Bundle finished!"));
// Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
std::fs::write(&file_to_watch, "syntax error ^^")
.expect("error writing file");
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines
.next()
.unwrap()
.contains("File change detected!"));
assert!(stderr_lines.next().unwrap().contains("file_to_watch.js"));
assert!(stderr_lines.next().unwrap().contains("mod6.bundle.js"));
let file = PathBuf::from(&bundle);
assert!(file.is_file());
assert!(stderr_lines.next().unwrap().contains("Bundle finished!"));
deno.kill().unwrap();
drop(t);
}
/// Confirm that the watcher exits immediately if module resolution fails at the first attempt
#[test]
fn bundle_watch_fail() {
let t = TempDir::new().expect("tempdir fail");
let file_to_watch = t.path().join("file_to_watch.js");
std::fs::write(&file_to_watch, "syntax error ^^")
.expect("error writing file");
let mut deno = util::deno_cmd()
.current_dir(util::root_path())
.arg("bundle")
.arg(&file_to_watch)
.arg("--watch")
.arg("--unstable")
.env("NO_COLOR", "1")
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped())
.spawn()
.expect("failed to spawn script");
let stderr = deno.stderr.as_mut().unwrap();
let mut stderr_lines =
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("file_to_watch.js"));
assert!(stderr_lines.next().unwrap().contains("error:"));
assert!(!deno.wait().unwrap().success());
drop(t);
}
#[test]
fn info_with_compiled_source() {
let _g = util::http_server();
@ -1201,7 +1345,7 @@ fn run_watch() {
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
assert!(stdout_lines.next().unwrap().contains("Hello world"));
assert!(stderr_lines.next().unwrap().contains("Process terminated"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
// TODO(lucacasonato): remove this timeout. It seems to be needed on Linux.
std::thread::sleep(std::time::Duration::from_secs(1));
@ -1209,18 +1353,89 @@ fn run_watch() {
// Change content of the file
std::fs::write(&file_to_watch, "console.log('Hello world2');")
.expect("error writing file");
// Events from the file watcher is "debounced", so we need to wait for the next execution to start
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains("Hello world2"));
assert!(stderr_lines.next().unwrap().contains("Process terminated"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
// Add dependency
let another_file = t.path().join("another_file.js");
std::fs::write(&another_file, "export const foo = 0;")
.expect("error writing file");
std::fs::write(
&file_to_watch,
"import { foo } from './another_file.js'; console.log(foo);",
)
.expect("error writing file");
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains('0'));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
// Confirm that restarting occurs when a new file is updated
std::fs::write(&another_file, "export const foo = 42;")
.expect("error writing file");
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains("42"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
// Confirm that the watcher keeps on working even if the file is updated and has invalid syntax
std::fs::write(&file_to_watch, "syntax error ^^")
.expect("error writing file");
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stderr_lines.next().unwrap().contains("error:"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
// Then restore the file
std::fs::write(
&file_to_watch,
"import { foo } from './another_file.js'; console.log(foo);",
)
.expect("error writing file");
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("Restarting"));
assert!(stdout_lines.next().unwrap().contains("42"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
child.kill().unwrap();
drop(t);
}
/// Confirm that the watcher exits immediately if module resolution fails at the first attempt
#[test]
fn run_watch_fail() {
let t = TempDir::new().expect("tempdir fail");
let file_to_watch = t.path().join("file_to_watch.js");
std::fs::write(&file_to_watch, "syntax error ^^")
.expect("error writing file");
let mut child = util::deno_cmd()
.current_dir(util::root_path())
.arg("run")
.arg(&file_to_watch)
.arg("--watch")
.arg("--unstable")
.env("NO_COLOR", "1")
.stdout(std::process::Stdio::piped())
.stderr(std::process::Stdio::piped())
.spawn()
.expect("failed to spawn script");
let stderr = child.stderr.as_mut().unwrap();
let mut stderr_lines =
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
std::thread::sleep(std::time::Duration::from_secs(1));
assert!(stderr_lines.next().unwrap().contains("error:"));
assert!(!child.wait().unwrap().success());
drop(t);
}
#[cfg(unix)]
#[test]
fn repl_test_pty_multiline() {
@ -1355,7 +1570,7 @@ fn run_watch_with_importmap_and_relative_paths() {
let mut stderr_lines =
std::io::BufReader::new(stderr).lines().map(|r| r.unwrap());
assert!(stderr_lines.next().unwrap().contains("Process terminated"));
assert!(stderr_lines.next().unwrap().contains("Process finished"));
assert!(stdout_lines.next().unwrap().contains("Hello world"));
child.kill().unwrap();

42
cli/tools/fmt.rs
View file

@ -9,11 +9,13 @@
use crate::colors;
use crate::diff::diff;
use crate::file_watcher;
use crate::fs_util::{collect_files, is_supported_ext};
use crate::text_encoding;
use deno_core::error::generic_error;
use deno_core::error::AnyError;
use deno_core::futures;
use deno_core::futures::FutureExt;
use dprint_plugin_typescript as dprint;
use std::fs;
use std::io::stdin;
@ -28,25 +30,37 @@ use std::sync::{Arc, Mutex};
const BOM_CHAR: char = '\u{FEFF}';
/// Format JavaScript/TypeScript files.
///
/// First argument and ignore supports globs, and if it is `None`
/// then the current directory is recursively walked.
pub async fn format(
args: Vec<PathBuf>,
ignore: Vec<PathBuf>,
check: bool,
exclude: Vec<PathBuf>,
watch: bool,
) -> Result<(), AnyError> {
if args.len() == 1 && args[0].to_string_lossy() == "-" {
return format_stdin(check);
}
// collect the files that are to be formatted
let target_files = collect_files(args, exclude, is_supported_ext)?;
let config = get_config();
if check {
check_source_files(config, target_files).await
let target_file_resolver = || {
// collect the files that are to be formatted
collect_files(&args, &ignore, is_supported_ext)
};
let operation = |paths: Vec<PathBuf>| {
let config = get_config();
async move {
if check {
check_source_files(config, paths).await?;
} else {
format_source_files(config, paths).await?;
}
Ok(())
}
.boxed_local()
};
if watch {
file_watcher::watch_func(target_file_resolver, operation, "Fmt").await?;
} else {
format_source_files(config, target_files).await
operation(target_file_resolver()?).await?;
}
Ok(())
}
async fn check_source_files(
@ -166,7 +180,7 @@ async fn format_source_files(
/// Format stdin and write result to stdout.
/// Treats input as TypeScript.
/// Compatible with `--check` flag.
fn format_stdin(check: bool) -> Result<(), AnyError> {
pub fn format_stdin(check: bool) -> Result<(), AnyError> {
let mut source = String::new();
if stdin().read_to_string(&mut source).is_err() {
return Err(generic_error("Failed to read from stdin"));

2
cli/tools/lint.rs
View file

@ -47,7 +47,7 @@ pub async fn lint_files(
if args.len() == 1 && args[0].to_string_lossy() == "-" {
return lint_stdin(json);
}
let target_files = collect_files(args, ignore, is_supported_ext)?;
let target_files = collect_files(&args, &ignore, is_supported_ext)?;
debug!("Found {} files", target_files.len());
let target_files_len = target_files.len();

3
cli/tools/test_runner.rs
View file

@ -44,8 +44,7 @@ pub fn prepare_test_modules_urls(
for path in include_paths {
let p = fs_util::normalize_path(&root_path.join(path));
if p.is_dir() {
let test_files =
crate::fs_util::collect_files(vec![p], vec![], is_supported).unwrap();
let test_files = fs_util::collect_files(&[p], &[], is_supported).unwrap();
let test_files_as_urls = test_files
.iter()
.map(|f| Url::from_file_path(f).unwrap())