[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [TExtractIndexes](./rc-js-util.textractindexes.md) ## TExtractIndexes type Extract numerical indexes out of a type, if there aren't any fallback to number. **Signature:** ```typescript export type TExtractIndexes = TNeverFallback, number>; ``` **References:** [TNeverFallback](./rc-js-util.tneverfallback.md)