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remove redundant transform (#4123)

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This commit is contained in:
Alex Lam S.L
2020-09-18 00:04:46 +01:00
committed by GitHub
parent 7f501f9fed
commit 0f0759ec15
1 changed files with 0 additions and 23 deletions
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23
lib/compress.js
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@@ -7660,29 +7660,6 @@ merge(Compressor.prototype, {
})
});
}
// (x + "foo") + ("bar" + y) => (x + "foobar") + y
if (self.left instanceof AST_Binary
&& self.left.operator == "+"
&& self.left.is_string(compressor)
&& self.left.right instanceof AST_Constant
&& self.right instanceof AST_Binary
&& self.right.operator == "+"
&& self.right.left instanceof AST_Constant
&& self.right.is_string(compressor)) {
self = make_node(AST_Binary, self, {
operator: "+",
left: make_node(AST_Binary, self.left, {
operator: "+",
left: self.left.left,
right: make_node(AST_String, self.left.right, {
value: "" + self.left.right.value + self.right.left.value,
start: self.left.right.start,
end: self.right.left.end
})
}),
right: self.right.right
});
}
// a + -b => a - b
if (self.right instanceof AST_UnaryPrefix
&& self.right.operator == "-"