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Function: throwIfNull() ​

throwIfNull<T>(value, message): asserts value is NonNullable<T>

Defined in: src/lib/guards/guards.ts:19

Assert that value is neither null nor undefined. A genuine TypeScript assertion function: once called, TypeScript narrows value to NonNullable<T> for the rest of the calling scope, so callers get type narrowing for free instead of needing a separate if/cast.

Type Parameters ​

T ​

T

Parameters ​

value ​

T

The value to check.

message ​

string

Human-readable explanation of what was unexpectedly null/undefined. Forwarded as-is to the thrown NullError.

Returns ​

asserts value is NonNullable<T>

Throws ​

If value is null or undefined.