runtime-type
Version:
Module for casting to types at runtime.
188 lines (187 loc) • 10.6 kB
JavaScript
;
function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _smartError = _interopRequireDefault(require("smart-error"));
var _nullable = _interopRequireDefault(require("./base/nullable"));
var _base = _interopRequireDefault(require("./base"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, "prototype", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
var Shape = /*#__PURE__*/function (_Base) {
_inherits(Shape, _Base);
var _super = _createSuper(Shape);
function Shape(shape) {
var _this;
_classCallCheck(this, Shape);
_this = _super.call(this);
_this._shape = null;
_this._required = [];
_this._dynamic = [];
Object.keys(shape).forEach(function (key) {
var type = shape[key];
if (!(type instanceof _base["default"])) {
throw new _smartError["default"]("The type ".concat(type, " must be an instance of Type."), 'unsupported_operation');
}
if (key.indexOf('?') === key.length - 1) {
delete shape[key];
var k = key.substr(0, key.length - 1);
shape[k] = type;
if (_this._isKeyDynamic(k)) {
_this._dynamic.push(k);
}
return;
}
if (_this._isKeyDynamic(key)) {
_this._dynamic.push(key);
}
_this._required.push(key);
});
_this._shape = shape;
return _this;
}
_createClass(Shape, [{
key: "cast",
value: function cast(value) {
var _this2 = this;
var o = {};
Object.keys(this._shape).forEach(function (key) {
if (_this2._dynamic.includes(key)) {
return;
}
var type = _this2._shape[key];
if (value[key] === undefined) {
if (_this2._required.includes(key)) {
throw new _smartError["default"]("Missing key '".concat(key, "' in the shape."), 'unsupported_operation');
}
return;
}
try {
o[key] = type.cast(value[key]);
} catch (e) {
if (e.code === 'ERR_INVALID_CAST') {
throw new _smartError["default"]("The value at key '".concat(key, "' cannot be cast to ").concat(type.getName().toLowerCase(), "."), 'invalid_cast');
}
throw e;
}
});
var usedDynamicKeys = [];
Object.keys(value).forEach(function (key) {
if (_this2._shape[key] === undefined) {
var _iterator = _createForOfIteratorHelper(_this2._dynamic),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var dynamicKey = _step.value;
var type = _this2._shape[dynamicKey];
if (type.canCast(value[key])) {
o[key] = type.cast(value[key]);
if (_this2._isKeyRequired(dynamicKey) && !usedDynamicKeys.includes(dynamicKey)) {
usedDynamicKeys.push(dynamicKey);
}
}
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
if (o[key] !== undefined) {
return;
}
throw new _smartError["default"]("The key '".concat(key, "' is not defined in the shape."), 'unsupported_operation');
}
});
if (usedDynamicKeys.length !== this._dynamic.length) {
this._dynamic.forEach(function (key) {
if (usedDynamicKeys.includes(key)) {
return;
}
if (_this2._isKeyOptional(key)) {
return;
}
throw new _smartError["default"]("Missing key '".concat(key, "' in the shape."), 'unsupported_operation');
});
}
return o;
}
}, {
key: "getName",
value: function getName() {
return 'Shape';
}
}, {
key: "toString",
value: function toString() {
var _this3 = this;
var o = {};
Object.keys(this._shape).forEach(function (key) {
var k = _this3._isKeyRequired(key) ? key : "".concat(key, "?");
o[k] = _this3._shape[key].toString();
});
return "shape(".concat(JSON.stringify(o), ")");
}
}, {
key: "getTSType",
value: function getTSType() {
var _this4 = this;
var format = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
var level = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
var a = Object.keys(this._shape).map(function (key) {
var k = _this4._isKeyRequired(key) ? key : "".concat(key, "?");
if (_this4._isKeyDynamic(key)) {
k = "[".concat(key.replace(/^\[(\w+)\]$/, '$1'), ": string]");
}
if (_this4._shape[key] instanceof Shape && format) {
return "".concat(k, ": ").concat(_this4._shape[key].getTSType(format, level + 1));
}
return "".concat(k, ": ").concat(_this4._shape[key].getTSType(format));
});
if (!a.length) {
return '{}';
}
if (!format) {
return "{ ".concat(a.join(', '), " }");
}
var tabs = new Array(level + 1).fill('\t').join('');
return "{\n".concat(a.map(function (v) {
return "".concat(tabs).concat(v, ";");
}).join('\n'), "\n").concat(tabs.substr(1), "}");
}
}, {
key: "_getTypeOf",
value: function _getTypeOf() {
return 'object';
}
}, {
key: "_isKeyDynamic",
value: function _isKeyDynamic(key) {
return /^\[\w+\]$/.test(key);
}
}, {
key: "_isKeyOptional",
value: function _isKeyOptional(key) {
return !this._isKeyRequired(key);
}
}, {
key: "_isKeyRequired",
value: function _isKeyRequired(key) {
return this._required.includes(key);
}
}]);
return Shape;
}(_nullable["default"]);
exports["default"] = Shape;