852348d700
When the rest parameter shared the same name as a default identifier
for a param, the loop would be hoisted outside the function!
```js
var a = 1;
for (var _len = arguments.length, a = Array(_len > 1 ? _len - 1 : 0),
_key = 1; _key < _len; _key++) {
a[_key - 1] = arguments[_key];
}
function foo2() {
var b = arguments.length <= 0 || arguments[0] === undefined ? a :
arguments[0];
assert.equal(b, 1);
}
foo2(undefined, 2);
```
And if you tried to reference any index or `#length`, it’d blow up and
refuse to transpile.
22 lines
518 B
JavaScript
22 lines
518 B
JavaScript
var a = 1;
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function rest() {
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var b = arguments.length <= 0 || arguments[0] === undefined ? a : arguments[0];
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assert.equal(b, 1);
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}
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rest(undefined, 2);
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function rest2() {
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var b = arguments.length <= 0 || arguments[0] === undefined ? a : arguments[0];
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assert.equal(arguments.length <= 1 ? undefined : arguments[1], 2);
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}
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rest2(undefined, 2);
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function rest3() {
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var b = arguments.length <= 0 || arguments[0] === undefined ? a : arguments[0];
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assert.equal(arguments.length - 1, 1);
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}
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rest3(undefined, 2);
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