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Deoptimize typeof for regular expression literals to better support e…
…s6-shim (#2916)
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,3 @@ | ||
module.exports = { | ||
description: 'deoptimizes typeof for regular expressions to better support es6-sim' | ||
}; |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,10 @@ | ||
const isCallable = | ||
typeof /abc/ === 'function' | ||
? function IsCallableSlow(x) { | ||
return typeof x === 'function' && _toString(x) === '[object Function]'; | ||
} | ||
: function IsCallableFast(x) { | ||
return typeof x === 'function'; | ||
}; | ||
|
||
console.log(isCallable(/x/)); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,10 @@ | ||
const isCallable = | ||
typeof /abc/ === 'function' | ||
? function IsCallableSlow(x) { | ||
return typeof x === 'function' && _toString(x) === '[object Function]'; | ||
} | ||
: function IsCallableFast(x) { | ||
return typeof x === 'function'; | ||
}; | ||
|
||
console.log(isCallable(/x/)); |