[Home](./index.md) > [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) > [ExpressionAstExpressionBuilder](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.md) > [toString](./kibana-plugin-plugins-expressions-public.expressionastexpressionbuilder.tostring.md) ## ExpressionAstExpressionBuilder.toString property Converts expression to an expression string. `string` Signature: ```typescript toString: () => string; ```