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Implement MemberExpressionToFunctions helper (#7763)

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* Implement MemberExpressionToFunctions helper

Fixes #7733.

This will also be used to simplify the Private Fields transform, which had [almost the same code](ccd941057a/packages/babel-plugin-proposal-class-properties/src/index.js (L114-L217)) hand written.

* Cleanup

* Little more comment cleanup

* Use unary plus

This can't be redefined, unlike the `Number` identifier.

* Review comments

* Remove unused deps
This commit is contained in:
Justin Ridgewell
2018-04-21 13:13:42 -04:00
committed by GitHub
parent dbdce0e4e4
commit 8f24f91166
11 changed files with 252 additions and 213 deletions
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8
packages/babel-plugin-transform-object-super/test/fixtures/object-super/super-exponentiation/output.js vendored
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@@ -1,21 +1,19 @@
var _obj;
function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
function set(target, property, value, receiver) { if (typeof Reflect !== "undefined" && Reflect.set) { set = Reflect.set; } else { set = function set(target, property, value, receiver) { var base = _superPropBase(target, property); var desc; if (base) { desc = Object.getOwnPropertyDescriptor(base, property); if (desc.set) { desc.set.call(receiver, value); return true; } else if (!desc.writable) { return false; } } desc = Object.getOwnPropertyDescriptor(receiver, property); if (desc) { if (!desc.writable) { return false; } desc.value = value; Object.defineProperty(receiver, property, desc); } else { _defineProperty(receiver, property, value); } return true; }; } return set(target, property, value, receiver); }
function _set(target, property, value, receiver, isStrict) { const s = set(target, property, value, receiver || target); if (!s && isStrict) { throw new Error('failed to set property'); } return value; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
function _getPrototypeOf(o) { _getPrototypeOf = Object.getPrototypeOf || function _getPrototypeOf(o) { return o.__proto__; }; return _getPrototypeOf(o); }
foo = _obj = {
bar: function () {
var _super$baz;
return _super$baz = _get(_getPrototypeOf(_obj), "baz", this), _set(_getPrototypeOf(_obj), "baz", _super$baz ** 12, this, false);
return _set(_getPrototypeOf(_obj), "baz", _get(_getPrototypeOf(_obj), "baz", this) ** 12, this, false);
}
};

2
packages/babel-plugin-transform-object-super/test/fixtures/object-super/super-increment-postfix/output.js vendored
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@@ -7,7 +7,7 @@ var obj = _obj = {
bar: function () {
var _super$test;
return _super$test = Number(babelHelpers.get(babelHelpers.getPrototypeOf(_obj), "test", this)), babelHelpers.set(babelHelpers.getPrototypeOf(_obj), "test", _super$test + 1, this, false), _super$test;
return babelHelpers.set(babelHelpers.getPrototypeOf(_obj), "test", (_super$test = +babelHelpers.get(babelHelpers.getPrototypeOf(_obj), "test", this)) + 1, this, false), _super$test;
}
};
Object.setPrototypeOf(obj, Base);

4
packages/babel-plugin-transform-object-super/test/fixtures/object-super/super-increment-prefix/output.js vendored
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@@ -5,9 +5,7 @@ var Base = {
};
var obj = _obj = {
bar: function () {
var _super$test;
return _super$test = Number(babelHelpers.get(babelHelpers.getPrototypeOf(_obj), "test", this)), babelHelpers.set(babelHelpers.getPrototypeOf(_obj), "test", _super$test + 1, this, false);
return babelHelpers.set(babelHelpers.getPrototypeOf(_obj), "test", +babelHelpers.get(babelHelpers.getPrototypeOf(_obj), "test", this) + 1, this, false);
}
};
Object.setPrototypeOf(obj, Base);