@rimbu/common
Version:
Common types and objects used in many other Rimbu packages
48 lines • 1.72 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.OptLazyOr = exports.OptLazy = void 0;
var tslib_1 = require("tslib");
/**
* Returns the value contained in an `OptLazy` instance of type T.
* @param optLazy - the `OptLazy` value of type T
* @param args - when needed, the extra arguments to pass to the lazy invocation
* @typeparam T - the value type
* @typeparam A - (default: []) types of the argument array that can be passed in the lazy case
* @example
* ```ts
* OptLazy(1) // => 1
* OptLazy(() => 1) // => 1
* OptLazy(() => () => 1) // => () => 1
* ```
*/
function OptLazy(optLazy) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
if (optLazy instanceof Function)
return optLazy.apply(void 0, tslib_1.__spreadArray([], tslib_1.__read(args), false));
return optLazy;
}
exports.OptLazy = OptLazy;
/**
* Returns the value contained in an `OptLazyOr` instance of type T, or the given
* `otherValue` if the lazy function returns it.
* @param optLazyOr - a value or a function returning a value or otherwise the received value
* @param otherValue - the value to return if the optLazyOr does not return its own value
* @typeparam T - the value type
* @typeparam O - the default value type
* @example
* ```ts
* OptLazyOr(1, 'a') // => 1
* OptLazyOr(() => 1, 'a') // => 1
* OptLazyOr((none) => none, 'a') // => 'a'
* ```
*/
function OptLazyOr(optLazyOr, otherValue) {
if (optLazyOr instanceof Function)
return optLazyOr(otherValue);
return optLazyOr;
}
exports.OptLazyOr = OptLazyOr;
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