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fix corner cases with spread syntax (#4358)

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This commit is contained in:
Alex Lam S.L
2020-12-10 22:59:21 +00:00
committed by GitHub
parent 77e1bda426
commit 57105b299e
5 changed files with 357 additions and 60 deletions
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279
test/compress/spread.js
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@@ -250,21 +250,7 @@ reduce_vars_2: {
node_version: ">=6"
}
drop_object: {
options = {
side_effects: true,
}
input: {
({ ...console.log("PASS") });
}
expect: {
console.log("PASS");
}
expect_stdout: "PASS"
node_version: ">=8"
}
keep_getter: {
keep_getter_1: {
options = {
side_effects: true,
}
@@ -293,6 +279,96 @@ keep_getter: {
node_version: ">=8"
}
keep_getter_2: {
options = {
side_effects: true,
}
input: {
({
...(console.log("foo"), {
get p() {
console.log("bar");
},
}),
});
}
expect: {
({
...(console.log("foo"), {
get p() {
console.log("bar");
},
}),
});
}
expect_stdout: [
"foo",
"bar",
]
node_version: ">=8"
}
keep_getter_3: {
options = {
side_effects: true,
}
input: {
({
...function() {
return {
get p() {
console.log("PASS");
},
};
}(),
});
}
expect: {
({
...function() {
return {
get p() {
console.log("PASS");
},
};
}(),
});
}
expect_stdout: "PASS"
node_version: ">=8"
}
keep_getter_4: {
options = {
reduce_vars: true,
side_effects: true,
toplevel: true,
}
input: {
var o = {
get p() {
console.log("PASS");
},
};
({
q: o,
...o,
});
}
expect: {
var o = {
get p() {
console.log("PASS");
},
};
({
...o,
});
}
expect_stdout: "PASS"
node_version: ">=8"
}
keep_accessor: {
options = {
objects: true,
@@ -341,6 +417,179 @@ keep_accessor: {
node_version: ">=8"
}
object_key_order_1: {
options = {
objects: true,
spread: true,
}
input: {
var o = {
...{},
a: 1,
b: 2,
a: 3,
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
a: (1, 3),
b: 2,
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"a 3",
"b 2",
]
node_version: ">=8 <=10"
}
object_key_order_2: {
options = {
objects: true,
spread: true,
}
input: {
var o = {
a: 1,
...{},
b: 2,
a: 3,
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
a: (1, 3),
b: 2,
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"a 3",
"b 2",
]
node_version: ">=8"
}
object_key_order_3: {
options = {
objects: true,
spread: true,
}
input: {
var o = {
a: 1,
b: 2,
...{},
a: 3,
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
a: (1, 3),
b: 2,
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"a 3",
"b 2",
]
node_version: ">=8"
}
object_key_order_4: {
options = {
objects: true,
spread: true,
}
input: {
var o = {
a: 1,
b: 2,
a: 3,
...{},
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
a: (1, 3),
b: 2,
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"a 3",
"b 2",
]
node_version: ">=8"
}
object_spread_array: {
options = {
objects: true,
spread: true,
}
input: {
var o = {
...[ "foo", "bar" ],
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
...[ "foo", "bar" ],
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"0 foo",
"1 bar",
]
node_version: ">=8"
}
object_spread_string: {
options = {
objects: true,
spread: true,
}
input: {
var o = {
..."foo",
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
..."foo",
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"0 f",
"1 o",
"2 o",
]
node_version: ">=8"
}
unused_var_side_effects: {
options = {
unused: true,