kibana/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.execution.start.md
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Home > kibana-plugin-plugins-expressions-public > Execution > start

Execution.start() method

Call this method to start execution.

N.B. input is initialized to null rather than undefined for legacy reasons, because in legacy interpreter it was set to null by default.

Signature:

start(input?: Input, isSubExpression?: boolean): Observable<ExecutionResult<Output | ExpressionValueError>>;

Parameters

Parameter Type Description
input Input
isSubExpression boolean

Returns:

Observable<ExecutionResult<Output | ExpressionValueError>>