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>