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Move array reference into for head initializer (#9698)

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* Move array reference into for head initializer

* Update packages/babel-plugin-transform-for-of/src/index.js

Co-Authored-By: danez <daniel@tschinder.de>

* Fix tests
This commit is contained in:
Daniel Tschinder
2019-03-23 17:57:17 -07:00
committed by GitHub
parent d610289812
commit a559397feb
9 changed files with 26 additions and 56 deletions
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10
packages/babel-plugin-transform-for-of/test/fixtures/opt/array-binding/output.js vendored
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@@ -1,13 +1,11 @@
const x = [];
var _arr = x;
for (var _i = 0; _i < _arr.length; _i++) {
const y = _arr[_i];
for (var _i = 0, _x = x; _i < _x.length; _i++) {
const y = _x[_i];
}
const arr = Object.entries(x);
var _arr2 = arr;
for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
const y = _arr2[_i2];
for (var _i2 = 0, _arr = arr; _i2 < _arr.length; _i2++) {
const y = _arr[_i2];
}

28
packages/babel-plugin-transform-for-of/test/fixtures/opt/built-ins/output.js vendored
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@@ -1,29 +1,19 @@
var _arr = [];
for (var _i = 0; _i < _arr.length; _i++) {
for (var _i = 0, _arr = []; _i < _arr.length; _i++) {
const y = _arr[_i];
}
var _arr2 = Array.from(x);
for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
const y = _arr2[_i2];
for (var _i2 = 0, _Array$from = Array.from(x); _i2 < _Array$from.length; _i2++) {
const y = _Array$from[_i2];
}
var _arr3 = Object.keys(x);
for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
const y = _arr3[_i3];
for (var _i3 = 0, _Object$keys = Object.keys(x); _i3 < _Object$keys.length; _i3++) {
const y = _Object$keys[_i3];
}
var _arr4 = Object.values(x);
for (var _i4 = 0; _i4 < _arr4.length; _i4++) {
const y = _arr4[_i4];
for (var _i4 = 0, _Object$values = Object.values(x); _i4 < _Object$values.length; _i4++) {
const y = _Object$values[_i4];
}
var _arr5 = Object.entries(x);
for (var _i5 = 0; _i5 < _arr5.length; _i5++) {
const y = _arr5[_i5];
for (var _i5 = 0, _Object$entries = Object.entries(x); _i5 < _Object$entries.length; _i5++) {
const y = _Object$entries[_i5];
}

4
packages/babel-plugin-transform-for-of/test/fixtures/opt/typeannotation/output.js vendored
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@@ -1,6 +1,4 @@
var _arr = b;
for (var _i = 0; _i < _arr.length; _i++) {
for (var _i = 0, _arr = b; _i < _arr.length; _i++) {
const y = _arr[_i];
}

4
packages/babel-plugin-transform-for-of/test/fixtures/regression/if-block-label-3858/output.js vendored
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@@ -1,7 +1,5 @@
if (true) {
var _arr = [];
loop: for (var _i = 0; _i < _arr.length; _i++) {
loop: for (var _i = 0, _arr = []; _i < _arr.length; _i++) {
let ch = _arr[_i];
}
}

4
packages/babel-plugin-transform-for-of/test/fixtures/regression/if-label-3858/output.js vendored
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@@ -1,7 +1,5 @@
if (true) {
var _arr = [];
loop: for (var _i = 0; _i < _arr.length; _i++) {
loop: for (var _i = 0, _arr = []; _i < _arr.length; _i++) {
let ch = _arr[_i];
}
}

6
packages/babel-plugin-transform-for-of/test/fixtures/regression/redeclare-array-8913/output.js vendored
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@@ -1,8 +1,6 @@
function f(...t) {
var _arr = t;
for (var _i = 0; _i < _arr.length; _i++) {
let o = _arr[_i];
for (var _i = 0, _t = t; _i < _t.length; _i++) {
let o = _t[_i];
const t = o;
}
}

3
packages/babel-plugin-transform-for-of/test/fixtures/regression/scope-9696/output.js vendored
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@@ -1,7 +1,6 @@
var arr = [1, 2, 3];
var _arr = arr;
for (var _i = 0; _i < _arr.length; _i++) {
for (var _i = 0, _arr = arr; _i < _arr.length; _i++) {
let v = _arr[_i];
console.log(v);
arr = null;