ref: Build to ESM for tree shaking (#117)

This PR changes updates our webpack config to use ESM instead of CJS
modules so we can actually do tree shaking. The reason for this is our
extension failed Chrome's review process due to some third party script
loading code from the Sentry SDK. We don't actually use this code and it
should be removed from our bundle with tree shaking.

feat: Cache flags and components for one hour (#114)

This PR adds a caching layer to the background service worker for the
flags and components fetchers. The cache just uses localstorage and will
start with a one hour TTL.

Closes #110

fix: Coverage not clearing on file navigation (#112)

Fixes a bug where on navigating between files, coverage highlights were
not clearing and updating.

Closes #108

Revert "Bump the npm_and_yarn group with 3 updates" (#105)

Reverts #104

I did my testing wrong, stuff is actually broken.

Bump the npm_and_yarn group with 3 updates (#104)

Bumps the npm_and_yarn group with 3 updates:
[postcss](https://github.com/postcss/postcss),
[webpack](https://github.com/webpack/webpack) and
[braces](https://github.com/micromatch/braces).

Updates `postcss` from 8.4.21 to 8.4.49
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/postcss/releases">postcss's
releases</a>.</em></p>
<blockquote>
<h2>8.4.49</h2>
<ul>
<li>Fixed custom syntax without <code>source.offset</code> (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.48</h2>
<ul>
<li>Fixed position calculation in error/warnings methods (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.47</h2>
<ul>
<li>Removed debug code.</li>
</ul>
<h2>8.4.46</h2>
<ul>
<li>Fixed <code>Cannot read properties of undefined (reading
'before')</code>.</li>
</ul>
<h2>8.4.45</h2>
<ul>
<li>Removed unnecessary fix which could lead to infinite loop.</li>
</ul>
<h2>8.4.44</h2>
<ul>
<li>Another way to fix <code>markClean is not a function</code>
error.</li>
</ul>
<h2>8.4.43</h2>
<ul>
<li>Fixed <code>markClean is not a function</code> error.</li>
</ul>
<h2>8.4.42</h2>
<ul>
<li>Fixed CSS syntax error on long minified files (by <a
href="https://github.com/varpstar"><code>@​varpstar</code></a>).</li>
</ul>
<h2>8.4.41</h2>
<ul>
<li>Fixed types (by <a
href="https://github.com/nex3"><code>@​nex3</code></a> and <a
href="https://github.com/querkmachine"><code>@​querkmachine</code></a>).</li>
<li>Cleaned up RegExps (by <a
href="https://github.com/bluwy"><code>@​bluwy</code></a>).</li>
</ul>
<h2>8.4.40</h2>
<ul>
<li>Moved to getter/setter in nodes types to help Sass team (by <a
href="https://github.com/nex3"><code>@​nex3</code></a>).</li>
</ul>
<h2>8.4.39</h2>
<ul>
<li>Fixed <code>CssSyntaxError</code> types (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.38</h2>
<ul>
<li>Fixed <code>endIndex: 0</code> in errors and warnings (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.37</h2>
<ul>
<li>Fixed <code>original.column are not numbers</code> error in another
case.</li>
</ul>
<h2>8.4.36</h2>
<ul>
<li>Fixed <code>original.column are not numbers</code> error on broken
previous source map.</li>
</ul>
<h2>8.4.35</h2>
<ul>
<li>Avoid <code>!</code> in <code>node.parent.nodes</code> type.</li>
<li>Allow to pass <code>undefined</code> to node adding method to
simplify types.</li>
</ul>
<h2>8.4.34</h2>
<ul>
<li>Fixed <code>AtRule#nodes</code> type (by <a
href="https://github.com/tim-we"><code>@​tim-we</code></a>).</li>
<li>Cleaned up code (by <a
href="https://github.com/DrKiraDmitry"><code>@​DrKiraDmitry</code></a>).</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/postcss/blob/main/CHANGELOG.md">postcss's
changelog</a>.</em></p>
<blockquote>
<h2>8.4.49</h2>
<ul>
<li>Fixed custom syntax without <code>source.offset</code> (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.48</h2>
<ul>
<li>Fixed position calculation in error/warnings methods (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.47</h2>
<ul>
<li>Removed debug code.</li>
</ul>
<h2>8.4.46</h2>
<ul>
<li>Fixed <code>Cannot read properties of undefined (reading
'before')</code>.</li>
</ul>
<h2>8.4.45</h2>
<ul>
<li>Removed unnecessary fix which could lead to infinite loop.</li>
</ul>
<h2>8.4.44</h2>
<ul>
<li>Another way to fix <code>markClean is not a function</code>
error.</li>
</ul>
<h2>8.4.43</h2>
<ul>
<li>Fixed <code>markClean is not a function</code> error.</li>
</ul>
<h2>8.4.42</h2>
<ul>
<li>Fixed CSS syntax error on long minified files (by <a
href="https://github.com/varpstar"><code>@​varpstar</code></a>).</li>
</ul>
<h2>8.4.41</h2>
<ul>
<li>Fixed types (by <a
href="https://github.com/nex3"><code>@​nex3</code></a> and <a
href="https://github.com/querkmachine"><code>@​querkmachine</code></a>).</li>
<li>Cleaned up RegExps (by <a
href="https://github.com/bluwy"><code>@​bluwy</code></a>).</li>
</ul>
<h2>8.4.40</h2>
<ul>
<li>Moved to getter/setter in nodes types to help Sass team (by <a
href="https://github.com/nex3"><code>@​nex3</code></a>).</li>
</ul>
<h2>8.4.39</h2>
<ul>
<li>Fixed <code>CssSyntaxError</code> types (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.38</h2>
<ul>
<li>Fixed <code>endIndex: 0</code> in errors and warnings (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.37</h2>
<ul>
<li>Fixed <code>original.column are not numbers</code> error in another
case.</li>
</ul>
<h2>8.4.36</h2>
<ul>
<li>Fixed <code>original.column are not numbers</code> error on broken
previous source map.</li>
</ul>
<h2>8.4.35</h2>
<ul>
<li>Avoid <code>!</code> in <code>node.parent.nodes</code> type.</li>
<li>Allow to pass <code>undefined</code> to node adding method to
simplify types.</li>
</ul>
<h2>8.4.34</h2>
<ul>
<li>Fixed <code>AtRule#nodes</code> type (by Tim Weißenfels).</li>
<li>Cleaned up code (by Dmitry Kirillov).</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/postcss/postcss/commit/aed8b899884db4bc89f60782771eecd8c7861b32"><code>aed8b89</code></a>
Release 8.4.49 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/345063010bf5a9724589a9ee420bd511ec2b12bf"><code>3450630</code></a>
Fix position calculations when offset is missing (<a
href="https://redirect.github.com/postcss/postcss/issues/1983">#1983</a>)</li>
<li><a
href="https://github.com/postcss/postcss/commit/77420d62919b4d53921a113bbc939ad5e5b49fe6"><code>77420d6</code></a>
Release 8.4.48 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/341529ff4e78d7b90526e6e2eb178573192b47e3"><code>341529f</code></a>
Update dependencies</li>
<li><a
href="https://github.com/postcss/postcss/commit/66fa667831bae59696d0b9ba54c2ee5b9dd74b6a"><code>66fa667</code></a>
Add Node.js 23 to CI</li>
<li><a
href="https://github.com/postcss/postcss/commit/1a8b261404348c7ba495af0707d6d244d66cf566"><code>1a8b261</code></a>
fix inconsistent position calculations (<a
href="https://redirect.github.com/postcss/postcss/issues/1980">#1980</a>)</li>
<li><a
href="https://github.com/postcss/postcss/commit/1cc6ac3bf43a12460d3396e2cb76f14075daea1b"><code>1cc6ac3</code></a>
Clarify usage in docs</li>
<li><a
href="https://github.com/postcss/postcss/commit/5e6fd1302d2cc9a844ac99282b2b7745e4ac0ed3"><code>5e6fd13</code></a>
Release 8.4.47 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/714bc10258bfa96be26bc201d218c67df09da82c"><code>714bc10</code></a>
Typo</li>
<li><a
href="https://github.com/postcss/postcss/commit/439d20e651098d9d16d31ede62df6f7916925e91"><code>439d20e</code></a>
Release 8.4.46 version</li>
<li>Additional commits viewable in <a
href="https://github.com/postcss/postcss/compare/8.4.21...8.4.49">compare
view</a></li>
</ul>
</details>
<br />

Updates `webpack` from 5.76.0 to 5.97.1
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/webpack/webpack/releases">webpack's
releases</a>.</em></p>
<blockquote>
<h2>v5.97.1</h2>
<h2>Bug Fixes</h2>
<ul>
<li>Performance regression</li>
<li>Sub define key should't be renamed when it's a defined variable</li>
</ul>
<h2>v5.97.0</h2>
<h2>Bug Fixes</h2>
<ul>
<li>Don't crash with filesystem cache and unknown scheme</li>
<li>Generate a valid code when <code>output.iife</code> is
<code>true</code> and output.library.type is <code>umd</code></li>
<li>Fixed conflict variable name with concatenate modules and runtime
code</li>
<li>Merge duplicate chunks before</li>
<li>Collisions in ESM library</li>
<li>Use recursive search for versions of shared dependencies</li>
<li><strong>[WASM]</strong> Don't crash WebAssembly with Reference Types
(sync and async)</li>
<li><strong>[WASM]</strong> Fixed wasm loading for sync and async
webassembly</li>
<li><strong>[CSS]</strong> Don't add <code>[uniqueName]</code> to
<code>localIdentName</code> when it is empty</li>
<li><strong>[CSS]</strong> Parsing strings on Windows</li>
<li><strong>[CSS]</strong> Fixed CSS local escaping</li>
</ul>
<h2>New Features</h2>
<ul>
<li>Added support for injecting debug IDs</li>
<li>Export the <code>MergeDuplicateChunks</code> plugin</li>
<li>Added universal loading for JS chunks and JS worker chunks (only ES
modules)</li>
<li><strong>[WASM]</strong> Added universal loading for WebAssembly
chunks (only for async WebAssembly)</li>
<li><strong>[CSS]</strong> Allow initial CSS chunks to be placed
anywhere - <strong>the <code>output.cssHeadDataCompression</code> option
was deleted</strong></li>
<li><strong>[CSS]</strong> Added universal loading for CSS chunks</li>
<li><strong>[CSS]</strong> Parse ICSS <code>@value</code> at-rules in
CSS modules</li>
<li><strong>[CSS]</strong> Parse ICSS <code>:import</code> rules in CSS
modules</li>
<li><strong>[CSS]</strong> Added the <code>url</code> and
<code>import</code> options for CSS</li>
<li><strong>[CSS]</strong> Allow to import custom properties in CSS
modules</li>
</ul>
<h2>Performance</h2>
<ul>
<li>Faster Queue implementation, also fixed queue iterator state in
dequeue method to ensure correct behavior after item removal</li>
</ul>
<h2>v5.96.1</h2>
<h2>Bug Fixes</h2>
<ul>
<li><strong>[Types]</strong> Add <code>@types/eslint-scope</code> to
dependencieS</li>
<li><strong>[Types]</strong> Fixed regression in
<code>validate</code></li>
</ul>
<h2>v5.96.0</h2>
<h2>Bug Fixes</h2>
<ul>
<li>Fixed Module Federation should track all referenced chunks</li>
<li>Handle Data URI without base64 word</li>
<li>HotUpdateChunk have correct runtime when modified with new
runtime</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/webpack/webpack/commit/3612d36e44bda5644dc3b353e2cade7fe442ba59"><code>3612d36</code></a>
chore(release): 5.97.1</li>
<li><a
href="https://github.com/webpack/webpack/commit/eb7ac6f39ae33baf962ce516f6ef772737de8742"><code>eb7ac6f</code></a>
fix: perf regression</li>
<li><a
href="https://github.com/webpack/webpack/commit/554be24d3b6160b345b84abc037a4576296ee3fe"><code>554be24</code></a>
fix: sub define key should't be renamed when it's a defined
variable</li>
<li><a
href="https://github.com/webpack/webpack/commit/5e0e78085359e731aa7ac43a2f9aebb9a16b6ff1"><code>5e0e780</code></a>
refactor: issue <a
href="https://redirect.github.com/webpack/webpack/issues/19030">#19030</a></li>
<li><a
href="https://github.com/webpack/webpack/commit/58fb03552cdb98da0502a272178fcfbfa187daab"><code>58fb035</code></a>
fix: sub define key should't be renamed when it's a defined
variable</li>
<li><a
href="https://github.com/webpack/webpack/commit/af1fd12efe6a625cc3edae667f36228af958edec"><code>af1fd12</code></a>
perf: regression</li>
<li><a
href="https://github.com/webpack/webpack/commit/34f19cbcd9997dd57ea9c8cae392a30a3c3d3afe"><code>34f19cb</code></a>
fix: package.json</li>
<li><a
href="https://github.com/webpack/webpack/commit/0ec7f5db974dbf6936943031c1df237b36c47851"><code>0ec7f5d</code></a>
refactor: issue <a
href="https://redirect.github.com/webpack/webpack/issues/19030">#19030</a></li>
<li><a
href="https://github.com/webpack/webpack/commit/5e7b8a23aaa4a514032e0045ebb0cd4aeaa4c0dc"><code>5e7b8a2</code></a>
fix: <code>package.json</code></li>
<li><a
href="https://github.com/webpack/webpack/commit/644f1d12716ba8f3c96d2efa279262560dd8c7fb"><code>644f1d1</code></a>
refactor: no extra work for CSS unescaping</li>
<li>Additional commits viewable in <a
href="https://github.com/webpack/webpack/compare/v5.76.0...v5.97.1">compare
view</a></li>
</ul>
</details>
<br />

Updates `braces` from 3.0.2 to 3.0.3
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/micromatch/braces/commit/74b2db2938fad48a2ea54a9c8bf27a37a62c350d"><code>74b2db2</code></a>
3.0.3</li>
<li><a
href="https://github.com/micromatch/braces/commit/88f1429a0f47e1dd3813de35211fc97ffda27f9e"><code>88f1429</code></a>
update eslint. lint, fix unit tests.</li>
<li><a
href="https://github.com/micromatch/braces/commit/415d660c3002d1ab7e63dbf490c9851da80596ff"><code>415d660</code></a>
Snyk js braces 6838727 (<a
href="https://redirect.github.com/micromatch/braces/issues/40">#40</a>)</li>
<li><a
href="https://github.com/micromatch/braces/commit/190510f79db1adf21d92798b0bb6fccc1f72c9d6"><code>190510f</code></a>
fix tests, skip 1 test in test/braces.expand</li>
<li><a
href="https://github.com/micromatch/braces/commit/716eb9f12d820b145a831ad678618731927e8856"><code>716eb9f</code></a>
readme bump</li>
<li><a
href="https://github.com/micromatch/braces/commit/a5851e57f45c3431a94d83fc565754bc10f5bbc3"><code>a5851e5</code></a>
Merge pull request <a
href="https://redirect.github.com/micromatch/braces/issues/37">#37</a>
from coderaiser/fix/vulnerability</li>
<li><a
href="https://github.com/micromatch/braces/commit/2092bd1fb108d2c59bd62e243b70ad98db961538"><code>2092bd1</code></a>
feature: braces: add maxSymbols (<a
href="https://github.com/micromatch/braces/issues/">https://github.com/micromatch/braces/issues/</a>...</li>
<li><a
href="https://github.com/micromatch/braces/commit/9f5b4cf47329351bcb64287223ffb6ecc9a5e6d3"><code>9f5b4cf</code></a>
fix: vulnerability (<a
href="https://security.snyk.io/vuln/SNYK-JS-BRACES-6838727">https://security.snyk.io/vuln/SNYK-JS-BRACES-6838727</a>)</li>
<li><a
href="https://github.com/micromatch/braces/commit/98414f9f1fabe021736e26836d8306d5de747e0d"><code>98414f9</code></a>
remove funding file</li>
<li><a
href="https://github.com/micromatch/braces/commit/665ab5d561c017a38ba7aafd92cc6655b91d8c14"><code>665ab5d</code></a>
update keepEscaping doc (<a
href="https://redirect.github.com/micromatch/braces/issues/27">#27</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/micromatch/braces/compare/3.0.2...3.0.3">compare
view</a></li>
</ul>
</details>
<br />


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fix: Change replaceChildren access to safe (#94)

This PR removes the defined assertion from a couple lines of code and
optional chains the param in case it doesn't exist

Merge pull request #93 from codecov/spalmurray/sentry-tracing-2

Add sentry tracing attempt two

Merge pull request #92 from codecov/revert-91-spalmurray/sentry-tracing

Revert "Add sentry tracing to network requests"

Merge pull request #91 from codecov/spalmurray/sentry-tracing

Add sentry tracing to network requests

Merge pull request #91 from codecov/spalmurray/sentry-tracing

Add sentry tracing to network requests