# `@jupyterlite/kernel` ## Variables ### `FALLBACK_KERNEL` > > `Const` **`FALLBACK_KERNEL`**: ``"javascript"`` The kernel name of last resort. #### Defined in [packages/kernel/src/tokens.ts:24](https://github.com/jupyterlite/jupyterlite/blob/999c7f0/packages/kernel/src/tokens.ts#L24) ### `IKernelSpecs` > > `Const` **`IKernelSpecs`**: `Token`<[`IKernelSpecs`](jupyterlite_kernel.md#ikernelspecs)\> The token for the kernel spec service. #### Defined in [packages/kernel/src/tokens.ts:135](https://github.com/jupyterlite/jupyterlite/blob/999c7f0/packages/kernel/src/tokens.ts#L135) [packages/kernel/src/tokens.ts:140](https://github.com/jupyterlite/jupyterlite/blob/999c7f0/packages/kernel/src/tokens.ts#L140) ### `IKernels` > > `Const` **`IKernels`**: `Token`<[`IKernels`](jupyterlite_kernel.md#ikernels)\> The token for the kernels service. #### Defined in [packages/kernel/src/tokens.ts:19](https://github.com/jupyterlite/jupyterlite/blob/999c7f0/packages/kernel/src/tokens.ts#L19) [packages/kernel/src/tokens.ts:29](https://github.com/jupyterlite/jupyterlite/blob/999c7f0/packages/kernel/src/tokens.ts#L29)