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Fix incorrect value of _cache in _wrapNativeSuper (#7570)

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The boolean expressions returns false in environments where Map is missing.
This change explicitly sets _cache to undefined in such cases, to ensure the cache methods will be ignored.
This commit is contained in:
Simon Kjellberg
2018-03-14 21:37:51 +01:00
committed by Henry Zhu
parent 91a114f74a
commit 07ab02f6b2
4 changed files with 4 additions and 4 deletions
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2
packages/babel-plugin-transform-classes/test/fixtures/extend-builtins/loose/output.js vendored
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@@ -6,7 +6,7 @@ var _sPO = Object.setPrototypeOf || function _sPO(o, p) { o.__proto__ = p; retur
var _construct = typeof Reflect === "object" && Reflect.construct || function _construct(Parent, args, Class) { var Constructor, a = [null]; a.push.apply(a, args); Constructor = Parent.bind.apply(Parent, a); return _sPO(new Constructor(), Class.prototype); };
var _cache = typeof Map === "function" && new Map();
var _cache = typeof Map === "function" ? new Map() : undefined;
function _wrapNativeSuper(Class) { if (typeof Class !== "function") { throw new TypeError("Super expression must either be null or a function"); } if (typeof _cache !== "undefined") { if (_cache.has(Class)) return _cache.get(Class); _cache.set(Class, Wrapper); } function Wrapper() {} Wrapper.prototype = Object.create(Class.prototype, { constructor: { value: Wrapper, enumerable: false, writable: true, configurable: true } }); return _sPO(Wrapper, _sPO(function Super() { return _construct(Class, arguments, _gPO(this).constructor); }, Class)); }

2
packages/babel-plugin-transform-classes/test/fixtures/extend-builtins/spec/output.js vendored
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@@ -12,7 +12,7 @@ var _sPO = Object.setPrototypeOf || function _sPO(o, p) { o.__proto__ = p; retur
var _construct = typeof Reflect === "object" && Reflect.construct || function _construct(Parent, args, Class) { var Constructor, a = [null]; a.push.apply(a, args); Constructor = Parent.bind.apply(Parent, a); return _sPO(new Constructor(), Class.prototype); };
var _cache = typeof Map === "function" && new Map();
var _cache = typeof Map === "function" ? new Map() : undefined;
function _wrapNativeSuper(Class) { if (typeof Class !== "function") { throw new TypeError("Super expression must either be null or a function"); } if (typeof _cache !== "undefined") { if (_cache.has(Class)) return _cache.get(Class); _cache.set(Class, Wrapper); } function Wrapper() {} Wrapper.prototype = Object.create(Class.prototype, { constructor: { value: Wrapper, enumerable: false, writable: true, configurable: true } }); return _sPO(Wrapper, _sPO(function Super() { return _construct(Class, arguments, _gPO(this).constructor); }, Class)); }