[Home](./index.md) > [@apextoaster/js-utils](./js-utils.md) > [MissingKeyError](./js-utils.missingkeyerror.md) ## MissingKeyError class Signature: ```typescript export declare class MissingKeyError extends BaseError ``` ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(msg, nested)](./js-utils.missingkeyerror._constructor_.md) | | Constructs a new instance of the MissingKeyError class |