trim

The trim function in the viem library removes leading or trailing zero byte data from a hex value or byte array. By default, the function trims leading zero bytes, but you can also specify a direction parameter to trim trailing zero bytes instead.

The trim function is useful when working with binary data that may have unnecessary zero bytes at the beginning or end. For example, when deserializing data from a hex string, you may want to remove leading zero bytes to get the actual data. Similarly, when working with byte arrays, you may want to remove trailing zero bytes to ensure that the data is properly formatted.

Here are some examples of using the trim function:

• returns, which is the trimmed version of the hex string.
• returns, which is the trimmed version of the byte array.
• returns, which is the trimmed version of the hex string with the trailing zero bytes removed.

The trim function takes an optional dir parameter, which specifies the direction in which to trim the zero byte data. The default value of dir is "left", which means that the function trims leading zero bytes. If you set dir to "right", the function trims trailing zero bytes instead.