ts-cast/lib/engine/restrict.js

Runtime typechecking

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.restrict = void 0;
var guards_1 = require("./guards");
var throw_type_error_1 = require("./throw-type-error");
var applyRule = function (value, context, reportError) {
    return function (rule) {
        var error = rule(value);
        if (!error)
            return;
        reportError("".concat(context ? "".concat(context, " should be") : 'expected value is', " ").concat(error, " but received ").concat(value, "."), context);
    };
};
var restrict = function (caster, rules) {
    var validator = function (value, context, reportError) {
        if (reportError === void 0) { reportError = throw_type_error_1.throwTypeError; }
        var typedValue = caster(value, context, reportError);
        if (!(0, guards_1.isEmpty)(typedValue))
            rules.forEach(applyRule(typedValue, context, reportError));
        return typedValue;
    };
    Reflect.defineProperty(validator, 'name', { value: caster.name });
    return validator;
};
exports.restrict = restrict;