Create Bubble & Circled Unicode Text Convert text to circled (bubble) Unicode characters.

The tool works by utilizing React's useState and useCallback hooks to manage the state of the filled checkbox and memoize the onProcess function. This function takes an input string, maps over each character, and applies code point arithmetic to convert it to its circled equivalent using Unicode characters from the Enclosed Alphanumerics block. For example, when converting uppercase letters, it uses Array.from to generate arrays of circled uppercase and filled uppercase characters, such as CIRCLED_UPPER and FILLED_UPPER, which are then used to replace the original characters. The tool also handles circled digits by mapping input digits to their corresponding Unicode characters, including U+24EA for the digit 0.

The conversion process relies on JavaScript's built-in charCodeAt method to determine the code point of each character, allowing it to correctly map characters to their circled equivalents. When a character does not have a circled equivalent, such as punctuation or spaces, it passes through unchanged. The use of TypeScript also helps catch type-related errors and ensures that the onProcess function is properly typed. Additionally, the tool uses React's TextToolLayout component to render the input field, output label, and checkbox, making it easy to manage the layout and styling of the tool.

In terms of data structures, the tool relies heavily on arrays to store the circled and filled characters, which are then used to map input characters to their corresponding bubble text equivalents. The use of Unicode characters also ensures that the output is compatible with most platforms and devices, making it easy to copy and paste the generated bubble text into social media posts or documents. By using a combination of React hooks, JavaScript methods, and Unicode characters, the tool provides an efficient and effective way to generate bubble text.