Question

How to convert a string to PascalCase using RegEx in TypeScript

Answer 1

function getPascalCase(input: string): string {
    if (!input.includes(" ")) {
        input = input.replace(/(?<=[a-z])(?=[A-Z])/g, " ");
    }
 
    const words: string[] = input.toLowerCase().split(/[\s_]+/);
    let result: string = "";
 
    for (let word of words) {
        if (word.length > 0) {
            result += word[0].toUpperCase() + word.slice(1);
        }
    }
 
    return result;
}
 
console.log(getPascalCase("get file content"));
console.log(getPascalCase("get_file_content"));
console.log(getPascalCase("get______file___content"));
console.log(getPascalCase("get______file____  content"));
console.log(getPascalCase("GET FILE CONTENT"));
console.log(getPascalCase("get    file      content"));
console.log(getPascalCase("getFileContent"));
 
 
    
/*
run:
    
"GetFileContent" 
"GetFileContent" 
"GetFileContent" 
"GetFileContent" 
"GetFileContent" 
"GetFileContent" 
"GetFileContent" 
   
*/

 

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