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Fix bug incorrect dereferencing rest argument (#5810)

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* Fix bug incorrect dereferencing rest argument

* Fix pure path

* Minor refactor
This commit is contained in:
Buu Nguyen
2017-07-11 20:26:57 -07:00
committed by Henry Zhu
parent 650cd43096
commit 8decefe8bc
6 changed files with 56 additions and 10 deletions
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2
packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/regression-4348/expected.js vendored
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@@ -2,5 +2,5 @@ function first() {
var _ref;
var index = 0;
return _ref = index++, arguments.length <= _ref ? undefined : arguments[_ref];
return _ref = index++, _ref < 0 || arguments.length <= _ref ? undefined : arguments[_ref];
}

10
packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/regression-5787/actual.js vendored Normal file
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@@ -0,0 +1,10 @@
function f(a, ...rest) {
let b = rest[rest.length - 3];
let c = rest[rest.length - 2];
let d = rest[rest.length - 1];
return [a, b, c, d];
}
function f(a, ...rest) {
return rest[-1];
}

12
packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/regression-5787/exec.js vendored Normal file
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@@ -0,0 +1,12 @@
function f1(a, ...rest) {
let b = rest[rest.length - 3];
let c = rest[rest.length - 2];
let d = rest[rest.length - 1];
return [a, b, c, d];
}
assert.deepEqual(f1(1, 2), [1, undefined, undefined, 2])
function f2(a, ...rest) {
return rest[-1];
}
assert.equal(f2(1, 2), undefined)

12
packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/regression-5787/expected.js vendored Normal file
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@@ -0,0 +1,12 @@
function f(a) {
var _ref, _ref2, _ref3;
var b = (_ref = (arguments.length <= 1 ? 0 : arguments.length - 1) - 3 + 1, _ref < 1 || arguments.length <= _ref ? undefined : arguments[_ref]);
var c = (_ref2 = (arguments.length <= 1 ? 0 : arguments.length - 1) - 2 + 1, _ref2 < 1 || arguments.length <= _ref2 ? undefined : arguments[_ref2]);
var d = (_ref3 = (arguments.length <= 1 ? 0 : arguments.length - 1) - 1 + 1, _ref3 < 1 || arguments.length <= _ref3 ? undefined : arguments[_ref3]);
return [a, b, c, d];
}
function f(a) {
return void 0;
}

2
packages/babel-plugin-transform-es2015-parameters/test/fixtures/parameters/rest-length/expected.js vendored
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@@ -2,7 +2,7 @@ var t = function (f) {
var _ref;
arguments.length <= 1 ? undefined : arguments[1];
_ref = (arguments.length <= 1 ? 0 : arguments.length - 1) - 1 + 1, arguments.length <= _ref ? undefined : arguments[_ref];
_ref = (arguments.length <= 1 ? 0 : arguments.length - 1) - 1 + 1, _ref < 1 || arguments.length <= _ref ? undefined : arguments[_ref];
};
function t(f) {