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4 changes: 1 addition & 3 deletions docs/portfolio-skills.md
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ author:
- Claude Code
- GitHub Copilot
date: 2026-05-27
modified_date: 2026-07-10
modified_date: 2026-07-15
toc: true
---

Expand Down Expand Up @@ -94,13 +94,11 @@ This keeps the package API small while still allowing clear internal organizatio
### String and number type-guard utilities

`StringUtility` and `NumberUtility` provide static runtime type guards, such as non-empty and single-line trimmed string checks and positive-integer checks, so consuming code gets both TypeScript narrowing and JavaScript-safe runtime validation from a single call.
`ColorStringUtility` builds on `StringUtility` to validate hex color string formats (`#RRGGBB` and `#RRGGBBAA`).

**Evidence:**

- [src/string/string-utility.ts](https://github.com/blwatkins/typescript-utils/blob/main/src/string/string-utility.ts)
- [src/number/number-utility.ts](https://github.com/blwatkins/typescript-utils/blob/main/src/number/number-utility.ts)
- [src/string/color-string-utility.ts](https://github.com/blwatkins/typescript-utils/blob/main/src/string/color-string-utility.ts)

### Discriminator-based type guard registry

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Expand Up @@ -20,7 +20,7 @@ <h1>Class DiscriminatorRegistry</h1></div>
<h4 class="tsd-anchor-link" id="since">Since<a href="#since" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
</div></div></section><aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/discriminator/discriminator-registry.ts#L71">discriminator/discriminator-registry.ts:71</a></li></ul></aside>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/discriminator/discriminator-registry.ts#L71">discriminator/discriminator-registry.ts:71</a></li></ul></aside>
<section class="tsd-panel-group tsd-index-group">
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<details class="tsd-index-content tsd-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>
Expand Down Expand Up @@ -58,7 +58,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
<h4 class="tsd-anchor-link" id="since-1">Since<a href="#since-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
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<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/discriminator/discriminator-registry.ts#L102">discriminator/discriminator-registry.ts:102</a></li></ul></aside></div></li></ul></section>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/discriminator/discriminator-registry.ts#L102">discriminator/discriminator-registry.ts:102</a></li></ul></aside></div></li></ul></section>
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<h3 class="tsd-anchor-link" id="register"><code class="tsd-tag">Static</code><span>register</span><a href="#register" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3>
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Expand Down Expand Up @@ -98,7 +98,7 @@ <h4 class="tsd-anchor-link" id="throws-3">Throws<a href="#throws-3" aria-label="
<h4 class="tsd-anchor-link" id="since-2">Since<a href="#since-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
</div></div><aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/discriminator/discriminator-registry.ts#L121">discriminator/discriminator-registry.ts:121</a></li></ul></aside></div></li></ul></section>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/discriminator/discriminator-registry.ts#L121">discriminator/discriminator-registry.ts:121</a></li></ul></aside></div></li></ul></section>
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<h3 class="tsd-anchor-link" id="validate"><code class="tsd-tag">Static</code><span>validate</span><a href="#validate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3>
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Expand All @@ -125,7 +125,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</
<h4 class="tsd-anchor-link" id="since-3">Since<a href="#since-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
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<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/discriminator/discriminator-registry.ts#L141">discriminator/discriminator-registry.ts:141</a></li></ul></aside></div></li></ul></section></section></details></div>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/discriminator/discriminator-registry.ts#L141">discriminator/discriminator-registry.ts:141</a></li></ul></aside></div></li></ul></section></section></details></div>
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Expand Up @@ -19,7 +19,7 @@ <h1>Class NumberUtility</h1></div>
<h4 class="tsd-anchor-link" id="since">Since<a href="#since" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
</div></div></section><aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/number/number-utility.ts#L26">number/number-utility.ts:26</a></li></ul></aside>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/number/number-utility.ts#L26">number/number-utility.ts:26</a></li></ul></aside>
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Expand Down Expand Up @@ -55,7 +55,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-kind-parameter">input</sp
<h4 class="tsd-anchor-link" id="since-1">Since<a href="#since-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
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<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/number/number-utility.ts#L48">number/number-utility.ts:48</a></li></ul></aside></div></li></ul></section>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/number/number-utility.ts#L48">number/number-utility.ts:48</a></li></ul></aside></div></li></ul></section>
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<h3 class="tsd-anchor-link" id="isinteger"><code class="tsd-tag">Static</code><span>is<wbr/>Integer</span><a href="#isinteger" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3>
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Expand All @@ -77,7 +77,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-kind-parameter">input</sp
<h4 class="tsd-anchor-link" id="since-2">Since<a href="#since-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
</div></div><aside class="tsd-sources">
<ul>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/number/number-utility.ts#L62">number/number-utility.ts:62</a></li></ul></aside></div></li></ul></section>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/number/number-utility.ts#L62">number/number-utility.ts:62</a></li></ul></aside></div></li></ul></section>
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<h3 class="tsd-anchor-link" id="ispositiveinteger"><code class="tsd-tag">Static</code><span>is<wbr/>Positive<wbr/>Integer</span><a href="#ispositiveinteger" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3>
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Expand All @@ -104,7 +104,7 @@ <h4 class="tsd-returns-title">Returns <span class="tsd-kind-parameter">input</sp
<h4 class="tsd-anchor-link" id="since-3">Since<a href="#since-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><p>0.1.0</p>
</div></div><aside class="tsd-sources">
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<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/a96bfc19a3ffdf6d622e8a329274ce51bda1752a/src/number/number-utility.ts#L79">number/number-utility.ts:79</a></li></ul></aside></div></li></ul></section></section></details></div>
<li>Defined in <a href="https://github.com/blwatkins/typescript-utils/blob/d5c5f63a5199133fc71fd8f2f98e2b0bcc230dd3/src/number/number-utility.ts#L79">number/number-utility.ts:79</a></li></ul></aside></div></li></ul></section></section></details></div>
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