<p>In TypeScript, there are four types that help developers handle string manipulation. These types are built-in to the compiler and you can't build your own implementation for them. Additionally, they can’t be found in the <code>.d.ts</code> files included with TypeScript.</p>
<h1 id="heading-uppercase">Uppercase</h1>
<p>Transform each charcater to uppercase. </p>
<pre><code>type Name = <span class="hljs-string">"John"</span>

type Modifiedname = Uppercase&lt;Name&gt;
</code></pre><h1 id="heading-lowercase">Lowercase</h1>
<p>Convert each character of a string to lowercase. </p>
<pre><code>type Name = <span class="hljs-string">"JOHN"</span>

type ModifiedName = Lowercase&lt;Name&gt;
</code></pre><h1 id="heading-capitalize">Capitalize</h1>
<p>Transform first character of a string to uppercase. </p>
<pre><code>type Name = <span class="hljs-string">"john"</span>

type ModifiedName = Capitalize&lt;Name&gt;
</code></pre><h1 id="heading-uncapitalize">Uncapitalize</h1>
<p>Converts first character of a string to lowercase. </p>
<pre><code>type Name = <span class="hljs-string">"John"</span>

type modifiedName = Uncapitalize&lt;Name&gt;
</code></pre>

In TypeScript, there are four types that help developers handle string manipulation. These types are built-in to the compiler and you can't build your own implementation for them. Additionally, they can’t be found in the `.d.ts` files included with TypeScript.

# Uppercase 
Transform each charcater to uppercase. 

```
type Name = "John"

type Modifiedname = Uppercase<Name>
``` 

# Lowercase
Convert each character of a string to lowercase. 

```
type Name = "JOHN"

type ModifiedName = Lowercase<Name>
``` 
# Capitalize
Transform first character of a string to uppercase. 

```
type Name = "john"

type ModifiedName = Capitalize<Name>
``` 

# Uncapitalize
Converts first character of a string to lowercase. 

```
type Name = "John"

type modifiedName = Uncapitalize<Name>
``` 




String manipulation is easy with TypeScript intrinsic string manipulation types.

4 Intrinsic String Manipulation Types In TypeScript

Table of contents

Uppercase

Lowercase

Capitalize

Uncapitalize