<p dir="auto">A failed assertion in unit_test.ts gives me incorrect line numbers, plus the following scary error:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="=====Error inside of prepareStackTrace====
TypeError: CallSite method toString expects CallSite as receiver
    at Object.toString (&lt;anonymous&gt;)
    at stack.map (gen/bundle/main.js:126369:77)
    at Array.map (&lt;anonymous&gt;)
    at prepareStackTrace$1 (gen/bundle/main.js:126369:28)
    at Function.prepareStackTraceWrapper (gen/bundle/main.js:126358:18)
    at Object.runTests [as cb] (C:/Users/BertBelder/d/deno/js/testing/testing.ts:60:39)
=====Original error=======================
Error
    at Object.assert (eval at _gatherDependencies (gen/bundle/main.js:126631:16), &lt;anonymous&gt;:32:19)
    at makeTempDir (C:/Users/BertBelder/d/deno/js/unit_tests.ts:72:28)
    at Object.runTests [as cb] (C:/Users/BertBelder/d/deno/js/testing/testing.ts:55:23)
out\debug\deno.exe js/unit_tests.ts permW0N0
out\debug\deno.exe js/unit_tests.ts permW1N0 --allow-write"><pre class="notranslate"><code class="notranslate">=====Error inside of prepareStackTrace====
TypeError: CallSite method toString expects CallSite as receiver
    at Object.toString (&lt;anonymous&gt;)
    at stack.map (gen/bundle/main.js:126369:77)
    at Array.map (&lt;anonymous&gt;)
    at prepareStackTrace$1 (gen/bundle/main.js:126369:28)
    at Function.prepareStackTraceWrapper (gen/bundle/main.js:126358:18)
    at Object.runTests [as cb] (C:/Users/BertBelder/d/deno/js/testing/testing.ts:60:39)
=====Original error=======================
Error
    at Object.assert (eval at _gatherDependencies (gen/bundle/main.js:126631:16), &lt;anonymous&gt;:32:19)
    at makeTempDir (C:/Users/BertBelder/d/deno/js/unit_tests.ts:72:28)
    at Object.runTests [as cb] (C:/Users/BertBelder/d/deno/js/testing/testing.ts:55:23)
out\debug\deno.exe js/unit_tests.ts permW0N0
out\debug\deno.exe js/unit_tests.ts permW1N0 --allow-write
</code></pre></div>
<p dir="auto">When running</p>
<div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="eval(&quot;unknownVariable&quot;)"><pre class="notranslate"><span class="pl-en">eval</span><span class="pl-kos">(</span><span class="pl-s">"unknownVariable"</span><span class="pl-kos">)</span></pre></div>
<p dir="auto">Deno gives the following cryptic error message.</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="=====Error inside of prepareStackTrace====
TypeError: CallSite method toString expects CallSite as receiver
    at Object.toString (&lt;anonymous&gt;)
    at stack.map (gen/bundle/main.js:127367:77)
    at Array.map (&lt;anonymous&gt;)
    at prepareStackTrace$1 (gen/bundle/main.js:127367:28)
    at Function.prepareStackTraceWrapper (gen/bundle/main.js:127355:18)
    at onGlobalError (gen/bundle/main.js:127912:25)
=====Original error=======================
ERROR RS -"><pre class="notranslate"><code class="notranslate">=====Error inside of prepareStackTrace====
TypeError: CallSite method toString expects CallSite as receiver
    at Object.toString (&lt;anonymous&gt;)
    at stack.map (gen/bundle/main.js:127367:77)
    at Array.map (&lt;anonymous&gt;)
    at prepareStackTrace$1 (gen/bundle/main.js:127367:28)
    at Function.prepareStackTraceWrapper (gen/bundle/main.js:127355:18)
    at onGlobalError (gen/bundle/main.js:127912:25)
=====Original error=======================
ERROR RS -
</code></pre></div>