react-instantsearch-core/dist/es/lib/invariant.d.ts

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/**
 * Throws an error if the condition is not met.
 *
 * The error is exhaustive in development, and becomes generic in production.
 *
 * This is used to make development a better experience to provide guidance as
 * to where the error comes from.
 */
export declare function invariant(condition: boolean, message: string | (() => string)): asserts condition;