Function invariant

invariant(condition: any, message?: string | (() => string)): asserts condition
Assert that a Condition is True.

Usage: invariant(context?.params?.slug, "Expected Slug to be Defined")

Returns
Nothing, but Throws an Error if the Condition Fails
Parameters
- condition: any
  
  The thing to check for
- Optional message: string | (() => string)
  
  The Error Message to be Returned
Returns asserts condition
- Defined in invariant.ts:10

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