Code block testing

index.ts

interface Todo {
  Todo.title: stringtitle: string
}

Custom log message
const const todo: Readonly<Todo>todo: type Readonly<T> = { readonly [P in keyof T]: T[P]; }
Make all properties in T readonly
Readonly<Todo> = {
  title: stringtitle: 'Delete inactive users'.String.toUpperCase(): string
Converts all the alphabetic characters in a string to uppercase.
toUpperCase(),
}

const todo: Readonly<Todo>todo.title = 'Hello'
Cannot assign to 'title' because it is a read-only property.
var Number: NumberConstructor
An object that represents a number of any kind. All JavaScript numbers are 64-bit floating-point numbers.
Number.NumberConstructor.parseInt(string: string, radix?: number | undefined): number
Converts A string to an integer.
@paramstring A string to convert into a number.@paramradix A value between 2 and 36 that specifies the base of the number in `string`.
If this argument is not supplied, strings with a prefix of '0x' are considered hexadecimal.
All other strings are considered decimal.
parseInt('123', 10)