chore(deps-dev): Bump esbuild from 0.15.16 to 0.15.18 (#171)

Bumps [esbuild](https://github.com/evanw/esbuild) from 0.15.16 to 0.15.18.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/evanw/esbuild/releases">esbuild's releases</a>.</em></p>
<blockquote>
<h2>v0.15.18</h2>
<ul>
<li>
<p>Performance improvements for both JS and CSS</p>
<p>This release brings noticeable performance improvements for JS parsing and for CSS parsing and printing. Here's an example benchmark for using esbuild to pretty-print a single large minified CSS file and JS file:</p>
<table>
<thead>
<tr>
<th>Test case</th>
<th>Previous release</th>
<th>This release</th>
</tr>
</thead>
<tbody>
<tr>
<td>4.8mb CSS file</td>
<td>19ms</td>
<td>11ms (1.7x faster)</td>
</tr>
<tr>
<td>5.8mb JS file</td>
<td>36ms</td>
<td>32ms (1.1x faster)</td>
</tr>
</tbody>
</table>
<p>The performance improvements were very straightforward:</p>
<ul>
<li>
<p>Identifiers were being scanned using a generic character advancement function instead of using custom inline code. Advancing past each character involved UTF-8 decoding as well as updating multiple member variables. This was sped up using loop that skips UTF-8 decoding entirely and that only updates member variables once at the end. This is faster because identifiers are plain ASCII in the vast majority of cases, so Unicode decoding is almost always unnecessary.</p>
</li>
<li>
<p>CSS identifiers and CSS strings were still being printed one character at a time. Apparently I forgot to move this part of esbuild's CSS infrastructure beyond the proof-of-concept stage. These were both very obvious in the profiler, so I think maybe I have just never profiled esbuild's CSS printing before?</p>
</li>
<li>
<p>There was unnecessary work being done that was related to source maps when source map output was disabled. I likely haven't observed this before because esbuild's benchmarks always have source maps enabled. This work is now disabled when it's not going to be used.</p>
</li>
</ul>
<p>I definitely should have caught these performance issues earlier. Better late than never I suppose.</p>
</li>
</ul>
<h2>v0.15.17</h2>
<ul>
<li>
<p>Search for missing source map code on the file system (<a href="https://github-redirect.dependabot.com/evanw/esbuild/issues/2711">#2711</a>)</p>
<p><a href="https://sourcemaps.info/spec.html">Source maps</a> are JSON files that map from compiled code back to the original code. They provide the original source code using two arrays: <code>sources</code> (required) and <code>sourcesContent</code> (optional). When bundling is enabled, esbuild is able to bundle code with source maps that was compiled by other tools (e.g. with Webpack) and emit source maps that map all the way back to the original code (e.g. before Webpack compiled it).</p>
<p>Previously if the input source maps omitted the optional <code>sourcesContent</code> array, esbuild would use <code>null</code> for the source content in the source map that it generates (since the source content isn't available). However, sometimes the original source code is actually still present on the file system. With this release, esbuild will now try to find the original source code using the path in the <code>sources</code> array and will use that instead of <code>null</code> if it was found.</p>
</li>
<li>
<p>Fix parsing bug with TypeScript <code>infer</code> and <code>extends</code> (<a href="https://github-redirect.dependabot.com/evanw/esbuild/issues/2712">#2712</a>)</p>
<p>This release fixes a bug where esbuild incorrectly failed to parse valid TypeScript code that nests <code>extends</code> inside <code>infer</code> inside <code>extends</code>, such as in the example below:</p>
<pre lang="ts"><code>type A&lt;T&gt; = {};
type B = {} extends infer T extends {} ? A&lt;T&gt; : never;
</code></pre>
<p>TypeScript code that does this should now be parsed correctly.</p>
</li>
<li>
<p>Use <code>WebAssembly.instantiateStreaming</code> if available (<a href="https://github-redirect.dependabot.com/evanw/esbuild/pull/1036">#1036</a>, <a href="https://github-redirect.dependabot.com/evanw/esbuild/pull/1900">#1900</a>)</p>
<p>Currently the WebAssembly version of esbuild uses <code>fetch</code> to download <code>esbuild.wasm</code> and then <code>WebAssembly.instantiate</code> to compile it. There is a newer API called <code>WebAssembly.instantiateStreaming</code> that both downloads and compiles at the same time, which can be a performance improvement if both downloading and compiling are slow. With this release, esbuild now attempts to use <code>WebAssembly.instantiateStreaming</code> and falls back to the original approach if that fails.</p>
<p>The implementation for this builds on a PR by <a href="https://github.com/lbwa"><code>@​lbwa</code></a>.</p>
</li>
<li>
<p>Preserve Webpack comments inside constructor calls (<a href="https://github-redirect.dependabot.com/evanw/esbuild/issues/2439">#2439</a>)</p>
<p>This improves the use of esbuild as a faster TypeScript-to-JavaScript frontend for Webpack, which has special <a href="https://webpack.js.org/api/module-methods/#magic-comments">magic comments</a> inside <code>new Worker()</code> expressions that affect Webpack's behavior.</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/evanw/esbuild/blob/master/CHANGELOG.md">esbuild's changelog</a>.</em></p>
<blockquote>
<h2>0.15.18</h2>
<ul>
<li>
<p>Performance improvements for both JS and CSS</p>
<p>This release brings noticeable performance improvements for JS parsing and for CSS parsing and printing. Here's an example benchmark for using esbuild to pretty-print a single large minified CSS file and JS file:</p>
<table>
<thead>
<tr>
<th>Test case</th>
<th>Previous release</th>
<th>This release</th>
</tr>
</thead>
<tbody>
<tr>
<td>4.8mb CSS file</td>
<td>19ms</td>
<td>11ms (1.7x faster)</td>
</tr>
<tr>
<td>5.8mb JS file</td>
<td>36ms</td>
<td>32ms (1.1x faster)</td>
</tr>
</tbody>
</table>
<p>The performance improvements were very straightforward:</p>
<ul>
<li>
<p>Identifiers were being scanned using a generic character advancement function instead of using custom inline code. Advancing past each character involved UTF-8 decoding as well as updating multiple member variables. This was sped up using loop that skips UTF-8 decoding entirely and that only updates member variables once at the end. This is faster because identifiers are plain ASCII in the vast majority of cases, so Unicode decoding is almost always unnecessary.</p>
</li>
<li>
<p>CSS identifiers and CSS strings were still being printed one character at a time. Apparently I forgot to move this part of esbuild's CSS infrastructure beyond the proof-of-concept stage. These were both very obvious in the profiler, so I think maybe I have just never profiled esbuild's CSS printing before?</p>
</li>
<li>
<p>There was unnecessary work being done that was related to source maps when source map output was disabled. I likely haven't observed this before because esbuild's benchmarks always have source maps enabled. This work is now disabled when it's not going to be used.</p>
</li>
</ul>
<p>I definitely should have caught these performance issues earlier. Better late than never I suppose.</p>
</li>
</ul>
<h2>0.15.17</h2>
<ul>
<li>
<p>Search for missing source map code on the file system (<a href="https://github-redirect.dependabot.com/evanw/esbuild/issues/2711">#2711</a>)</p>
<p><a href="https://sourcemaps.info/spec.html">Source maps</a> are JSON files that map from compiled code back to the original code. They provide the original source code using two arrays: <code>sources</code> (required) and <code>sourcesContent</code> (optional). When bundling is enabled, esbuild is able to bundle code with source maps that was compiled by other tools (e.g. with Webpack) and emit source maps that map all the way back to the original code (e.g. before Webpack compiled it).</p>
<p>Previously if the input source maps omitted the optional <code>sourcesContent</code> array, esbuild would use <code>null</code> for the source content in the source map that it generates (since the source content isn't available). However, sometimes the original source code is actually still present on the file system. With this release, esbuild will now try to find the original source code using the path in the <code>sources</code> array and will use that instead of <code>null</code> if it was found.</p>
</li>
<li>
<p>Fix parsing bug with TypeScript <code>infer</code> and <code>extends</code> (<a href="https://github-redirect.dependabot.com/evanw/esbuild/issues/2712">#2712</a>)</p>
<p>This release fixes a bug where esbuild incorrectly failed to parse valid TypeScript code that nests <code>extends</code> inside <code>infer</code> inside <code>extends</code>, such as in the example below:</p>
<pre lang="ts"><code>type A&lt;T&gt; = {};
type B = {} extends infer T extends {} ? A&lt;T&gt; : never;
</code></pre>
<p>TypeScript code that does this should now be parsed correctly.</p>
</li>
<li>
<p>Use <code>WebAssembly.instantiateStreaming</code> if available (<a href="https://github-redirect.dependabot.com/evanw/esbuild/pull/1036">#1036</a>, <a href="https://github-redirect.dependabot.com/evanw/esbuild/pull/1900">#1900</a>)</p>
<p>Currently the WebAssembly version of esbuild uses <code>fetch</code> to download <code>esbuild.wasm</code> and then <code>WebAssembly.instantiate</code> to compile it. There is a newer API called <code>WebAssembly.instantiateStreaming</code> that both downloads and compiles at the same time, which can be a performance improvement if both downloading and compiling are slow. With this release, esbuild now attempts to use <code>WebAssembly.instantiateStreaming</code> and falls back to the original approach if that fails.</p>
<p>The implementation for this builds on a PR by <a href="https://github.com/lbwa"><code>@​lbwa</code></a>.</p>
</li>
<li>
<p>Preserve Webpack comments inside constructor calls (<a href="https://github-redirect.dependabot.com/evanw/esbuild/issues/2439">#2439</a>)</p>
<p>This improves the use of esbuild as a faster TypeScript-to-JavaScript frontend for Webpack, which has special <a href="https://webpack.js.org/api/module-methods/#magic-comments">magic comments</a> inside <code>new Worker()</code> expressions that affect Webpack's behavior.</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/evanw/esbuild/commit/2953831c60ea7e76dd1372204e23bdf7ff4ea459"><code>2953831</code></a> publish 0.15.18 to npm</li>
<li><a href="https://github.com/evanw/esbuild/commit/a3ba2b25d4d1f388ffdd63b07ea105810e4249d7"><code>a3ba2b2</code></a> perf release notes</li>
<li><a href="https://github.com/evanw/esbuild/commit/f0d8fdda9b789bd2f9ba9b3002b486249898ceb1"><code>f0d8fdd</code></a> oops: skip source maps for improved performance</li>
<li><a href="https://github.com/evanw/esbuild/commit/e49e093ad80178feaf947739ce0d4d411a023544"><code>e49e093</code></a> css: optimize printing quoted unescaped strings</li>
<li><a href="https://github.com/evanw/esbuild/commit/a193324e8f5621c30ad6ef61ffae419dfc0e72a1"><code>a193324</code></a> css: improve identifier printing performance</li>
<li><a href="https://github.com/evanw/esbuild/commit/83b558034af1bb1f4b8f43639958b12c76e17b6f"><code>83b5580</code></a> css: pretty-print test failures</li>
<li><a href="https://github.com/evanw/esbuild/commit/2b8883cae1e4e9b1eb4ec46da1954260db545cf6"><code>2b8883c</code></a> css: improve lexer identifier parsing performance</li>
<li><a href="https://github.com/evanw/esbuild/commit/f6f8b27a0d58acff793049873902286e35d0de4b"><code>f6f8b27</code></a> js: improve lexer identifier parsing performance</li>
<li><a href="https://github.com/evanw/esbuild/commit/decf208045e3bfa588368bf6be8e7ea02c87a82c"><code>decf208</code></a> restrict gc disable to not serve or watch mode</li>
<li><a href="https://github.com/evanw/esbuild/commit/2030df11c79513126481d65a088a4509d09d8082"><code>2030df1</code></a> don't disable the gc with multiple entry points</li>
<li>Additional commits viewable in <a href="https://github.com/evanw/esbuild/compare/v0.15.16...v0.15.18">compare view</a></li>
</ul>
</details>
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