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Differentiate object spread and non-spread properties (#9341)

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* add isSpread field

* use argument

* t.booleanLiteral

* fix typo

* push empty-argument object

* .object

* .value

* object field should be an expression

* lint

* update outputs

* isSpread for the second argument is redundant

* add test

* alternating spread
This commit is contained in:
Kagami Sascha Rosylight 2019-01-22 06:04:47 +09:00 committed by Nicolò Ribaudo
parent e9331aa0c0
commit 3ae5e79ec8
10 changed files with 42 additions and 21 deletions
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4
packages/babel-helpers/src/helpers.js
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@ -389,6 +389,7 @@ helpers.objectSpread = helper("7.0.0-beta.0")`
export default function _objectSpread(target) {
for (var i = 1; i < arguments.length; i++) {
if (i % 2) {
var source = (arguments[i] != null) ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === 'function') {
@ -399,6 +400,9 @@ helpers.objectSpread = helper("7.0.0-beta.0")`
ownKeys.forEach(function(key) {
defineProperty(target, key, source[key]);
});
} else {
Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i]));
}
}
return target;
}

7
packages/babel-plugin-proposal-object-rest-spread/src/index.js
View File

@ -412,15 +412,10 @@ export default declare((api, opts) => {
let props = [];
function push() {
if (!props.length) return;
args.push(t.objectExpression(props));
props = [];
}
if (t.isSpreadElement(path.node.properties[0])) {
args.push(t.objectExpression([]));
}
for (const prop of (path.node.properties: Array)) {
if (t.isSpreadElement(prop)) {
push();
@ -430,7 +425,9 @@ export default declare((api, opts) => {
}
}
if (props.length) {
push();
}
let helper;
if (loose) {

2
packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/assignment/output.js vendored
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@ -1,4 +1,4 @@
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { if (i % 2) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } else { Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i])); } } return target; }
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; }

8
packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/exec.js vendored Normal file
View File

@ -0,0 +1,8 @@
var log = [];
var a = {
...{ get foo() { log.push(1); } },
get bar() { log.push(2); }
};
expect(log).toEqual([1]);

2
packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/input.js vendored
View File

@ -4,4 +4,6 @@
({ ...{ foo: 'bar' } });
({ ...{ foo: 'bar' }, ...{ bar: 'baz' } });
({ ...{ get foo () { return 'foo' } } });

8
packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/expression/output.js vendored
View File

@ -1,4 +1,4 @@
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { if (i % 2) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } else { Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i])); } } return target; }
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; }
@ -16,6 +16,12 @@ _objectSpread({}, {
foo: 'bar'
});
_objectSpread({}, {
foo: 'bar'
}, {}, {
bar: 'baz'
});
_objectSpread({}, {
get foo() {
return 'foo';

2
packages/babel-plugin-proposal-object-rest-spread/test/fixtures/object-spread/variable-declaration/output.js vendored
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@ -1,4 +1,4 @@
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { if (i % 2) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } else { Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i])); } } return target; }
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; }

2
packages/babel-preset-env/test/fixtures/preset-options/shippedProposals-use-builtins-entry/output.js vendored
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@ -1,4 +1,4 @@
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { if (i % 2) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } else { Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i])); } } return target; }
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; }

6
packages/babel-preset-env/test/fixtures/preset-options/shippedProposals-use-builtins-usage/output.js vendored
View File

@ -1,5 +1,9 @@
"use strict";
require("core-js/modules/es7.object.get-own-property-descriptors");
require("core-js/modules/es6.object.define-properties");
require("core-js/modules/es6.array.for-each");
require("core-js/modules/es6.array.filter");
@ -22,7 +26,7 @@ require("core-js/modules/es6.symbol");
require("core-js/modules/es6.promise");
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { if (i % 2) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } else { Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i])); } } return target; }
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; }

2
packages/babel-preset-env/test/fixtures/preset-options/shippedProposals/output.js vendored
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@ -1,4 +1,4 @@
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { if (i % 2) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } else { Object.defineProperties(target, Object.getOwnPropertyDescriptors(arguments[i])); } } return target; }
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; }