kibana/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.buildexpression.md

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buildExpression() function

Makes it easy to progressively build, update, and traverse an expression AST. You can either start with an empty AST, or provide an expression string, AST, or array of expression function builders to use as initial state.

Signature:

export declare function buildExpression(initialState?: ExpressionAstFunctionBuilder[] | ExpressionAstExpression | string): ExpressionAstExpressionBuilder;

Parameters

Parameter	Type	Description
initialState	ExpressionAstFunctionBuilder[] | ExpressionAstExpression | string

Returns:

ExpressionAstExpressionBuilder