1529ab965a
1b6bcca7 was a first attempt at this. That commit made Uglify stop replacing
holes with undefined, but instead it started replacing undefined with
holes. This is slightly problematic, because there is a difference between a
hole and an undefined value. More problematically, it changed [1,undefined] to
[1,] which generally doesn't even parse as a hole (just as a trailing comma), so
it didn't even preserve the length of the array!
Instead, parse holes as their own special AST node which prints invisibly.
13 lines
216 B
JavaScript
13 lines
216 B
JavaScript
holes_and_undefined: {
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input: {
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x = [1, 2, undefined];
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y = [1, , 2, ];
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z = [1, undefined, 3];
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}
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expect: {
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x=[1,2,void 0];
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y=[1,,2];
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z=[1,void 0,3];
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}
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}
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