Innovenergy_trunk/frontend/node_modules/fp-ts/lib/Random.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.randomElem = exports.randomBool = exports.randomRange = exports.randomInt = exports.random = void 0;
/**
* @since 2.0.0
*/
var IO_1 = require("./IO");
var function_1 = require("./function");
/**
* Returns a random number between 0 (inclusive) and 1 (exclusive). This is a direct wrapper around JavaScript's
* `Math.random()`.
*
* @since 2.0.0
*/
var random = function () { return Math.random(); };
exports.random = random;
/**
* Takes a range specified by `low` (the first argument) and `high` (the second), and returns a random integer uniformly
* distributed in the closed interval `[low, high]`. It is unspecified what happens if `low > high`, or if either of
* `low` or `high` is not an integer.
*
* @since 2.0.0
*/
function randomInt(low, high) {
return (0, function_1.pipe)(exports.random, (0, IO_1.map)(function (n) { return Math.floor((high - low + 1) * n + low); }));
}
exports.randomInt = randomInt;
/**
* Returns a random number between a minimum value (inclusive) and a maximum value (exclusive). It is unspecified what
* happens if `maximum < minimum`.
*
* @since 2.0.0
*/
function randomRange(min, max) {
return (0, function_1.pipe)(exports.random, (0, IO_1.map)(function (n) { return (max - min) * n + min; }));
}
exports.randomRange = randomRange;
/**
* Returns a random boolean value with an equal chance of being `true` or `false`
*
* @since 2.0.0
*/
exports.randomBool = (0, function_1.pipe)(exports.random, (0, IO_1.map)(function (n) { return n < 0.5; }));
/**
* Returns a random element of a `ReadonlyNonEmptyArray`.
*
* @since 2.10.0
*/
var randomElem = function (as) {
return (0, function_1.pipe)(randomInt(0, as.length - 1), (0, IO_1.map)(function (i) { return as[i]; }));
};
exports.randomElem = randomElem;