@quenk/preconditions/lib/number.js

Make data satisfy constraints before using.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.toNumber = exports.isNumber = exports.max = exports.min = exports.range = exports.lt = exports.gt = void 0;
const result_1 = require("./result");
/**
 * gt test.
 */
const gt = (target) => (value) => value > target
    ? (0, result_1.succeed)(value)
    : (0, result_1.fail)('gt', value, { target, value });
exports.gt = gt;
/**
 * lt test.
 */
const lt = (target) => (value) => value < target
    ? (0, result_1.succeed)(value)
    : (0, result_1.fail)('lt', value, { target, value });
exports.lt = lt;
/**
 * range tests whether a number falls within a specified range.
 */
const range = (min, max) => (value) => value < min
    ? (0, result_1.fail)('range.min', value, { min, max })
    : value > max
        ? (0, result_1.fail)('range.max', value, { min, max })
        : (0, result_1.succeed)(value);
exports.range = range;
/**
 * min tests whether a value is more than or equal to the desired target.
 */
const min = (target) => value => value >= target
    ? (0, result_1.succeed)(value)
    : (0, result_1.fail)('min', value, { target, value });
exports.min = min;
/**
 * max tests whether a value is less than or equal to the desired target.
 */
const max = (target) => value => value <= target
    ? (0, result_1.succeed)(value)
    : (0, result_1.fail)('max', value, { target, value });
exports.max = max;
/**
 * isNumber tests if a value is a number.
 */
const isNumber = (n) => typeof n === 'number' && !isNaN(n)
    ? (0, result_1.succeed)(n)
    : (0, result_1.fail)('isNumber', n);
exports.isNumber = isNumber;
/**
 * toNumber casts a string to a number.
 */
const toNumber = (value) => {
    if (value === null)
        return (0, result_1.succeed)(0);
    else if (Array.isArray(value))
        return (0, result_1.fail)('NaN', value, {});
    let n = Number(value);
    return isNaN(n) ? (0, result_1.fail)('NaN', value, {}) : (0, result_1.succeed)(n);
};
exports.toNumber = toNumber;
//# sourceMappingURL=number.js.map