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         <h1 id="debugging">Debugging</h1>

 <p>Add the options in the <code class="language-plaintext highlighter-rouge">Support for debugging NodeJS tests</code> section from https://github.com/bazelbuild/rules_nodejs/blob/master/common.bazelrc to your project’s <code class="language-plaintext highlighter-rouge">.bazelrc</code> file to add support for debugging NodeJS programs.</p>

 <p>Using the <code class="language-plaintext highlighter-rouge">--config=debug</code> command line option with bazel will set a number of flags that are specified there are useful for debugging. See the comments under <code class="language-plaintext highlighter-rouge">Support for debugging NodeJS tests</code> for details on the flags that are set.</p>

 <p>Use  <code class="language-plaintext highlighter-rouge">--config=debug</code> with <code class="language-plaintext highlighter-rouge">bazel test</code> as follow,</p>

 <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>bazel test --config=debug //test:...
 </code></pre></div></div>

 <p>or with <code class="language-plaintext highlighter-rouge">bazel run</code>,</p>

 <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>bazel run --config=debug //test:test1
 </code></pre></div></div>

 <p>to also turn on the NodeJS inspector agent which will break before any user code starts. You should then see,</p>

 <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Executing tests from //test:test1
 -----------------------------------------------------------------------------
 Debugger listening on ws://127.0.0.1:9229/3f20777a-242c-4d18-b88b-5ed4b3fed61c
 For help, see: https://nodejs.org/en/docs/inspector
 </code></pre></div></div>

 <p>when the test is run.</p>

 <p>To inspect with Chrome DevTools 55+, open <code class="language-plaintext highlighter-rouge">chrome://inspect</code> in a Chromium-based browser and attach to the waiting process.
 A Chrome DevTools window should open and you should see <code class="language-plaintext highlighter-rouge">Debugger attached.</code> in the console.</p>

 <p>See https://nodejs.org/en/docs/guides/debugging-getting-started/ for more details.</p>

 <h2 id="debugging-with-vs-code">Debugging with VS Code</h2>

 <p>With the above configuration you can use VS Code as your debugger.
 You will first need to configure your <code class="language-plaintext highlighter-rouge">.vscode/launch.json</code>:</p>

 <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>{
       "type": "node",
       "request": "attach",
       "name": "Attach nodejs_binary",
       "internalConsoleOptions": "neverOpen",
       "sourceMapPathOverrides": {
         "../*": "${workspaceRoot}/*",
         "../../*": "${workspaceRoot}/*",
         "../../../*": "${workspaceRoot}/*",
         "../../../../*": "${workspaceRoot}/*",
         "../../../../../*": "${workspaceRoot}/*",
         // do as many levels here as needed for your project
       }
 </code></pre></div></div>
 <p>We use <code class="language-plaintext highlighter-rouge">sourceMapPathOverrides</code> here to rewrite the source maps produced by <code class="language-plaintext highlighter-rouge">ts_library</code> so that breakpoints line up with the source maps.
 Once configured start your process with</p>
 <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>bazel run --config=debug //test:test1
 </code></pre></div></div>
 <p>Then hit <code class="language-plaintext highlighter-rouge">F5</code> which will start the VS Code debugger with the <code class="language-plaintext highlighter-rouge">Attach nodejs_binary</code> configuration.
 VS Code will immediatenly hit a breakpoint to which you can continue and debug using all the normal debug features provided.</p>

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	<h1 id="debugging">Debugging</h1>

	<p>Add the options in the <code class="language-plaintext highlighter-rouge">Support for debugging NodeJS tests</code> section from https://github.com/bazelbuild/rules_nodejs/blob/master/common.bazelrc to your project’s <code class="language-plaintext highlighter-rouge">.bazelrc</code> file to add support for debugging NodeJS programs.</p>

	<p>Using the <code class="language-plaintext highlighter-rouge">--config=debug</code> command line option with bazel will set a number of flags that are specified there are useful for debugging. See the comments under <code class="language-plaintext highlighter-rouge">Support for debugging NodeJS tests</code> for details on the flags that are set.</p>

	<p>Use <code class="language-plaintext highlighter-rouge">--config=debug</code> with <code class="language-plaintext highlighter-rouge">bazel test</code> as follow,</p>

	<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>bazel test --config=debug //test:...
	</code></pre></div></div>

	<p>or with <code class="language-plaintext highlighter-rouge">bazel run</code>,</p>

	<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>bazel run --config=debug //test:test1
	</code></pre></div></div>

	<p>to also turn on the NodeJS inspector agent which will break before any user code starts. You should then see,</p>

	<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Executing tests from //test:test1
	-----------------------------------------------------------------------------
	Debugger listening on ws://127.0.0.1:9229/3f20777a-242c-4d18-b88b-5ed4b3fed61c
	For help, see: https://nodejs.org/en/docs/inspector
	</code></pre></div></div>

	<p>when the test is run.</p>

	<p>To inspect with Chrome DevTools 55+, open <code class="language-plaintext highlighter-rouge">chrome://inspect</code> in a Chromium-based browser and attach to the waiting process.
	A Chrome DevTools window should open and you should see <code class="language-plaintext highlighter-rouge">Debugger attached.</code> in the console.</p>

	<p>See https://nodejs.org/en/docs/guides/debugging-getting-started/ for more details.</p>

	<h2 id="debugging-with-vs-code">Debugging with VS Code</h2>

	<p>With the above configuration you can use VS Code as your debugger.
	You will first need to configure your <code class="language-plaintext highlighter-rouge">.vscode/launch.json</code>:</p>

	<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>{
	"type": "node",
	"request": "attach",
	"name": "Attach nodejs_binary",
	"internalConsoleOptions": "neverOpen",
	"sourceMapPathOverrides": {
	"../": "${workspaceRoot}/",
	"../../": "${workspaceRoot}/",
	"../../../": "${workspaceRoot}/",
	"../../../../": "${workspaceRoot}/",
	"../../../../../": "${workspaceRoot}/",
	// do as many levels here as needed for your project
	}
	</code></pre></div></div>
	<p>We use <code class="language-plaintext highlighter-rouge">sourceMapPathOverrides</code> here to rewrite the source maps produced by <code class="language-plaintext highlighter-rouge">ts_library</code> so that breakpoints line up with the source maps.
	Once configured start your process with</p>
	<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>bazel run --config=debug //test:test1
	</code></pre></div></div>
	<p>Then hit <code class="language-plaintext highlighter-rouge">F5</code> which will start the VS Code debugger with the <code class="language-plaintext highlighter-rouge">Attach nodejs_binary</code> configuration.
	VS Code will immediatenly hit a breakpoint to which you can continue and debug using all the normal debug features provided.</p>

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	// Flip the caret when submenu toggles are clicked.
	$(".sidebar-submenu").on("show.bs.collapse", function () {
	var toggle = $('[href$="#' + $(this).attr('id') + '"]');
	if (toggle) {
	toggle.addClass("dropup");
	}
	});
	$(".sidebar-submenu").on("hide.bs.collapse", function () {
	var toggle = $('[href$="#' + $(this).attr('id') + '"]');
	if (toggle) {
	toggle.removeClass("dropup");
	}
	});

	// Highlight the current page on the sidebar nav.
	highlightCurrentSidebarNav();
	});
	</script>

	</body>
	</html>