ts-cast/lib/engine/optional.js

Runtime typechecking

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var names_1 = require("../helpers/names");
var throw_type_error_1 = require("./throw-type-error");
var optional = function (caster) {
    return (0, names_1.withName)(function (value, context, reportError) {
        if (reportError === void 0) { reportError = throw_type_error_1.throwTypeError; }
        return (value !== undefined
            ? caster(value, context, reportError)
            : value);
    }, "".concat(caster.name, " | undefined"));
};
exports.default = optional;