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To use `shift()` on an array in TypeScript, we first need to declare the array with a type. For example, we can declare an array of strings like this:
let myArray: string = ["apple", "banana", "orange"];
Now that we have an array, we can use the `shift()` method to remove the first element:
let firstElement: string = myArray.shift();
In this example, `firstElement` will be assigned the value of `”apple”`, and `myArray` will now be `[“banana”, “orange”]`.
It’s important to note that `shift()` modifies the original array. If you want to remove the first element without modifying the original array, you can use the `slice()` method:
let myArrayCopy: string = myArray.slice(1);
In this example, `myArrayCopy` will be a new array with all elements of `myArray` except for the first one.
In conclusion, using `shift()` on arrays in TypeScript is a simple and effective way to remove the first element. By declaring the array with a type, we can ensure type safety and catch errors at compile time.