Function isSome

isSome<Value>(value?): value is NonNullable<Value>
Generic TypeGuard against null or undefined values.
Type Parameters
- Value
  The type of the value to test.
Parameters
- Optional value: null | Value
  The value to test.
Returns value is NonNullable<Value>
Example
```
const maybeValue: string | undefined = "TypeScript";
isSome(maybeValue)
// => true
// typeof maybeValue is string
```
- Defined in src/typeguard/is-some.ts:11

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