String helpers in $util.str - Amazon AppSync
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String helpers in $util.str

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$util.str contains methods to help with common String operations.

$util.str.toUpper(String) : String

Takes a string and converts it to be entirely uppercase.

$util.str.toLower(String) : String

Takes a string and converts it to be entirely lowercase.

$util.str.toReplace(String, String, String) : String

Replaces a substring within a string with another string. The first argument specifies the string on which to perform the replacement operation. The second argument specifies the substring to replace. The third argument specifies the string to replace the second argument with. The following is an example of this utility's usage: 


 INPUT:      $util.str.toReplace("hello world", "hello", "mellow")
 OUTPUT:     "mellow world"
$util.str.normalize(String, String) : String

Normalizes a string using one of the four unicode normalization forms: NFC, NFD, NFKC, or NFKD. The first argument is the string to normalize. The second argument is either "nfc", "nfd", "nfkc", or "nfkd" specifying the normalization type to use for the normalization process.