need typescript

by Maxim_Wolf

JavaScript

const transform = (value) => value.replace('с', 'б');

let data = 'соль'

console.log(transform(data).toUpperCase())
data = null;
try {
  console.log(transform(data).toUpperCase())
} catch (err) {
  console.log(err.message)
}

const transform2 = (value) => {
  if (typeof value === 'string') {
    return value.replace('с', 'б');
  }
}
data = 'соль';
console.log(transform2(data).toUpperCase())
data = null
try {
  console.log(transform2(data).toUpperCase())
} catch (err) {
  console.log(err.message)
}