rc-js-util
Version:
A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.
20 lines • 513 B
JavaScript
/**
* @public
* Returns true if both `A` and `B` are both null, undefined or 'defined'. Defined is not null and not undefined.
* @remarks
* See {@link equalityAreConsistentlyDefined}.
*/
export function equalityAreConsistentlyDefined(a, b) {
if (a == null) {
if (a === undefined) {
return b === undefined;
}
else {
return b === null;
}
}
else {
return b != null;
}
}
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