[Home](./index.md) > [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) > [parseExpression](./kibana-plugin-plugins-expressions-public.parseexpression.md) ## parseExpression() function Given expression pipeline string, returns parsed AST. Signature: ```typescript export declare function parseExpression(expression: string): ExpressionAstExpression; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | expression | string | | Returns: `ExpressionAstExpression`