feat(cli): run oxlint with no file arguments (#1201)

closes #1190

See: `https://github.com/eslint/eslint/issues/14308`

CONTRIBUTING.md

@@ -112,7 +112,7 @@ The binary is located at `./target/release/oxlint` once the project is built.
 Under the hood, `cargo instruments` invokes the `xcrun` command, equivalent to
 
 ```bash
-xcrun xctrace record --template 'Time Profile' --output . --launch -- /path/to/oxc/target/release/oxlint --quiet .
+xcrun xctrace record --template 'Time Profile' --output . --launch -- /path/to/oxc/target/release/oxlint --quiet
 ```
 
 Running the command above produces the following output

README.md

@@ -36,7 +36,7 @@ The linter is ready to catch mistakes for you. It comes with over 60 default rul
 To start using, install [oxlint][npm-oxlint] or via `npx`:
 
 ```bash
-npx oxlint@latest .
+npx oxlint@latest
 ```
 
 To give you an idea of its capabilities, here is an example from the [vscode] repository, which finishes linting 4000+ files in 0.5 seconds.
@@ -127,7 +127,7 @@ Unlike other linters like [ESLint], which often require intricate configurations
 our linter only requires a single command that you can immediately run on your codebase:
 
 ```bash
-npx oxlint@latest .
+npx oxlint@latest
 ```
 
 We also plan to port essential plugins such as [eslint-plugin-import] and [eslint-plugin-jest].

crates/oxc_cli/src/lint/main.rs

@@ -14,7 +14,7 @@ fn main() -> CliRunResult {
     init_tracing();
     init_miette();
 
-    let command = oxc_cli::lint_command().fallback_to_usage().run();
+    let command = oxc_cli::lint_command().run();
     command.handle_threads();
     LintRunner::new(command.lint_options).run()
 }

crates/oxc_cli/src/lint/mod.rs

@@ -1,4 +1,4 @@
-use std::{io::BufWriter, path::Path, vec::Vec};
+use std::{env, io::BufWriter, path::Path, vec::Vec};
 
 use oxc_diagnostics::DiagnosticService;
 use oxc_linter::{LintOptions, LintService, Linter};
@@ -37,8 +37,16 @@ impl Runner for LintRunner {
             enable_plugins,
         } = self.options;
 
+        let mut paths = paths;
+
         if paths.is_empty() {
-            return CliRunResult::InvalidOptions { message: "No paths provided.".to_string() };
+            if let Ok(cwd) = env::current_dir() {
+                paths.push(cwd);
+            } else {
+                return CliRunResult::InvalidOptions {
+                    message: "Failed to get current working directory.".to_string(),
+                };
+            }
         }
 
         let now = std::time::Instant::now();
@@ -158,6 +166,16 @@ mod test {
         test(args);
     }
 
+    #[test]
+    fn no_arg() {
+        let args = &[];
+        let result = test(args);
+        assert!(result.number_of_rules > 0);
+        assert_eq!(result.number_of_files, 2);
+        assert_eq!(result.number_of_warnings, 2);
+        assert_eq!(result.number_of_errors, 0);
+    }
+
     #[test]
     fn dir() {
         let args = &["fixtures"];

npm/oxlint/README.md

@@ -44,8 +44,8 @@ This is the linter for oxc.
 
 Run
 
-* `npx --yes oxlint@latest .` in your JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations are required.
-* `npx oxlint@latest` --help for usage instructions.
+* `npx --yes oxlint@latest` in your JavaScript / TypeScript codebase and see it complete in milliseconds. No configurations are required.
+* `npx oxlint@latest --help` for usage instructions.
 * `npx oxlint@latest --rules` for the list of rules.