#eval

Evaluates an arbitrary expression, either from a path or literal value, and returns the result.

#eval(expression)

Category Control flowValid in Property name, Property valueUnsafe requires WithUnsafeAllowed

Unsafe method

This method is disabled unless you call WithUnsafeAllowed() on the JoltOptions passed to your transformer. Use it only with trusted input.

Parameters

Name	Type	Description
expression	path | string	Jolt expression text to evaluate.

Returns

any

Notes

• #eval can execute any expression, including ones with unwanted side effects or security implications. Use it only with trusted input. Enable it with WithUnsafeAllowed on JoltOptions.

Examples

Evaluate expression text

#eval('1 + 2 == 3')