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| // @flow
| // This file is not actually executed
| // It is just used by flow for typing
|
| const prefix: string = 'Invariant failed';
|
| export default function invariant(condition: mixed, message?: string | (() => string)) {
| if (condition) {
| return;
| }
| throw new Error(`${prefix}: ${message || ''}`);
| }
|
|
