deno_lint 0.2.1

lint for deno
Documentation 
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// Copyright 2020 the Deno authors. All rights reserved. MIT license.
use super::Context;
use super::LintRule;
use swc_ecmascript::ast::DebuggerStmt;
use swc_ecmascript::visit::noop_visit_type;
use swc_ecmascript::visit::Node;
use swc_ecmascript::visit::Visit;

use std::sync::Arc;

pub struct NoDebugger;

impl LintRule for NoDebugger {
  fn new() -> Box<Self> {
    Box::new(NoDebugger)
  }

  fn code(&self) -> &'static str {
    "no-debugger"
  }

  fn lint_module(
    &self,
    context: Arc<Context>,
    module: &swc_ecmascript::ast::Module,
  ) {
    let mut visitor = NoDebuggerVisitor::new(context);
    visitor.visit_module(module, module);
  }
}
struct NoDebuggerVisitor {
  context: Arc<Context>,
}

impl NoDebuggerVisitor {
  fn new(context: Arc<Context>) -> Self {
    Self { context }
  }
}

impl Visit for NoDebuggerVisitor {
  noop_visit_type!();

  fn visit_debugger_stmt(
    &mut self,
    debugger_stmt: &DebuggerStmt,
    _parent: &dyn Node,
  ) {
    self.context.add_diagnostic(
      debugger_stmt.span,
      "no-debugger",
      "`debugger` statement is not allowed",
    );
  }
}

#[cfg(test)]
mod tests {
  use super::*;
  use crate::test_util::*;

  #[test]
  fn no_debugger_test() {
    assert_lint_err::<NoDebugger>(
      r#"function asdf(): number { console.log("asdf"); debugger; return 1; }"#,
      47,
    )
  }
}