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To retrieve an array from a different TypeScript file, you need to export the array from the file that contains it and import it into the file where you want to retrieve it.

For example, if you have an array called myArray in a file called data.ts, you can export it by adding the following line at the end of the file:

export const myArray: string[] = ["a", "b", "c"];

Then, in the file where you want to retrieve the array, you can import it using the following line:

import { myArray } from "./data";

This will import the myArray array from the data.ts file and assign it to a variable of the same name in the current file. You can then use the myArray variable as you would any other array.

Note that you will need to adjust the path in the import statement to match the location of the data.ts file relative to the current file.