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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.flatMapOptional = exports.mapOptional = exports.unsafeUnwrapOptional = exports.unwrapOptional = exports.isSome = exports.isNothing = exports.unsafeUninitialized = void 0;
/**
* Bypass the protection provided by the `Optional` type
* and pretend to produce a value of `Some<T>` while
* actually returning `Nothing`.
*/
function unsafeUninitialized() {
return undefined;
}
exports.unsafeUninitialized = unsafeUninitialized;
/**
* Test whether an optional does not contain a value.
*
* @param value - An optional value to test.
*/
function isNothing(value) {
return value === undefined || value === null;
}
exports.isNothing = isNothing;
/**
* Test whether an optional contains a value.
* @param value - An optional value to test.
*/
function isSome(value) {
return value !== undefined && value !== null;
}
exports.isSome = isSome;
/**
* Unwrap the value contained in a given optional,
* throwing an error if there is no value.
*
* @param value - A value to unwrap.
*/
function unwrapOptional(value) {
if (isNothing(value)) {
throw new ReferenceError();
}
return value;
}
exports.unwrapOptional = unwrapOptional;
/**
* Unwrap the value contained in a given optional
* without checking if the value exists.
*
* @param value - A value to unwrap.
*/
function unsafeUnwrapOptional(value) {
return value;
}
exports.unsafeUnwrapOptional = unsafeUnwrapOptional;
function mapOptional(value, body) {
if (isSome(value)) {
return body(value);
}
else {
return value;
}
}
exports.mapOptional = mapOptional;
function flatMapOptional(value, body) {
if (isSome(value)) {
return body(value);
}
else {
return value;
}
}
exports.flatMapOptional = flatMapOptional;
//# sourceMappingURL=optional.js.map
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