15 lines
373 B
TypeScript
15 lines
373 B
TypeScript
|
/** Throws if argument is null/undefined. */
|
||
|
|
export function expectNotNull<T>(val: T | null | undefined): T {
|
||
|
|
if (val === null || val === undefined) {
|
||
|
|
throw Error("Unexpected missing value.");
|
||
|
|
}
|
||
|
|
return val as T;
|
||
|
|
}
|
||
|
|
|
||
|
|
//* Throws if argument is not truthy. */
|
||
|
|
export function assert<T>(val: T): asserts val {
|
||
|
|
if (!val) {
|
||
|
|
throw Error("Assertion failed.");
|
||
|
|
}
|
||
|
|
}
|