ts-cast/lib/engine/required.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 required = function (typeName, typeGuard, transform) { return (0, names_1.withName)(function (value, context, reportError) {
    if (reportError === void 0) { reportError = throw_type_error_1.throwTypeError; }
    if (value === undefined || !typeGuard(value)) {
        return reportError("".concat(typeName, " is expected").concat(context ? " in ".concat(context) : '', " but \"").concat(value, "\" received."), context);
    }
    return (typeof transform === 'function'
        ? transform(value, context, reportError)
        : value);
}, typeName); };
exports.default = required;