string
Asserts that the input value is a string. If multiple values are provided, each one is evaluated in order until a string value is obtained. If none of the inputs are strings, the expression is an error. The asserted input value is returned as result.
Return
expression
Parameters
input
expression input
See also
<a href="https://maplibre. org/maplibre-style-spec/expressions/#types-string">Style specification</a>