babel & tsc

[EdwardZZZ]

class A {
    m() {}
    static a = 1;
}

class B extends A {}

// tsc
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) {
                    d.__proto__ = b;
                }
            ) ||
            function (d, b) {
                for (var p in b)
                    if (b.hasOwnProperty(p)) d[p] = b[p];
            };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);

        function __() {
            this.constructor = d;
        }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var A = /** @class */ (function () {
    function A() {}
    A.prototype.m = function () {};
    A.a = 1;
    return A;
}());
var B = /** @class */ (function (_super) {
    __extends(B, _super);

    function B() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    return B;
}(A));

// babel
var _createClass = 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);
        }
    }
    return function (Constructor, protoProps, staticProps) {
        if (protoProps) defineProperties(Constructor.prototype, protoProps);
        if (staticProps) defineProperties(Constructor, staticProps);
        return Constructor;
    };
}();

function _possibleConstructorReturn(self, call) {
    if (!self) {
        throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }
    return call && (typeof call === "object" || typeof call === "function") ? call : self;
}

function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
        throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
    }
    subClass.prototype = Object.create(superClass && superClass.prototype, {
        constructor: {
            value: subClass,
            enumerable: false,
            writable: true,
            configurable: true
        }
    });
    if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
}

function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
        throw new TypeError("Cannot call a class as a function");
    }
}

var A = function () {
    function A() {
        _classCallCheck(this, A);
    }

    _createClass(A, [{
        key: "m",
        value: function m() {}
    }]);

    return A;
}();

var B = function (_A) {
    _inherits(B, _A);

    function B() {
        _classCallCheck(this, B);

        return _possibleConstructorReturn(this, (B.__proto__ || Object.getPrototypeOf(B)).apply(this, arguments));
    }

    return B;
}(A);

[EdwardZZZ]

TS 有属性装饰器