Function ensureLength

Returns a copy of an array with specified length - padded or truncated as needed.

If the input array is too short, it will be expanded based on the expand strategy:

• 'undefined': fill with undefined (default)
• 'repeat': repeat array elements, starting from position 0
• 'first': repeat with first element from data
• 'last': repeat with last element from data

Truncate:

ensureLength([1,2,3], 2); // [1,2]
Copy

Padded:

ensureLength([1,2,3], 5, `undefined`); // [1,2,3,undefined,undefined]
ensureLength([1,2,3], 5, `repeat`);    // [1,2,3,1,2]
ensureLength([1,2,3], 5, `first`);     // [1,2,3,1,1]
ensureLength([1,2,3], 5, `last`);      // [1,2,3,3,3]
Copy