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support spread syntax (#4328)

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This commit is contained in:
Alex Lam S.L
2020-12-05 21:19:31 +00:00
committed by GitHub
parent d2d56e301e
commit 1e4985ed9e
8 changed files with 635 additions and 56 deletions
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371
test/compress/spread.js Normal file
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@@ -0,0 +1,371 @@
collapse_vars_1: {
options = {
collapse_vars: true,
}
input: {
var a;
[ ...a = "PASS", "PASS"].slice();
console.log(a);
}
expect: {
var a;
[ ...a = "PASS", "PASS"].slice();
console.log(a);
}
expect_stdout: "PASS"
node_version: ">=6"
}
collapse_vars_2: {
options = {
collapse_vars: true,
}
input: {
var a = "FAIL";
try {
a = "PASS";
[ ...42, "PASS"].slice();
} catch (e) {
console.log(a);
}
}
expect: {
var a = "FAIL";
try {
a = "PASS";
[ ...42, "PASS"].slice();
} catch (e) {
console.log(a);
}
}
expect_stdout: "PASS"
node_version: ">=6"
}
collapse_vars_3: {
options = {
collapse_vars: true,
}
input: {
var a = "FAIL";
try {
[ ...(a = "PASS", 42), "PASS"].slice();
} catch (e) {
console.log(a);
}
}
expect: {
var a = "FAIL";
try {
[ ...(a = "PASS", 42), "PASS"].slice();
} catch (e) {
console.log(a);
}
}
expect_stdout: "PASS"
node_version: ">=6"
}
collapse_vars_4: {
options = {
collapse_vars: true,
unused: true,
}
input: {
console.log(function(a) {
return a;
}(...[ "PASS", "FAIL" ]));
}
expect: {
console.log(function(a) {
return a;
}(...[ "PASS", "FAIL" ]));
}
expect_stdout: "PASS"
node_version: ">=6"
}
dont_inline: {
options = {
inline: true,
}
input: {
console.log(function(a) {
return a;
}(...[ "PASS", "FAIL" ]));
}
expect: {
console.log(function(a) {
return a;
}(...[ "PASS", "FAIL" ]));
}
expect_stdout: "PASS"
node_version: ">=6"
}
do_inline: {
options = {
properties: true,
inline: true,
}
input: {
console.log(function(a) {
return a;
}(...[ "PASS", "FAIL" ]));
}
expect: {
console.log(("FAIL", "PASS"));
}
expect_stdout: "PASS"
node_version: ">=6"
}
drop_empty_call_1: {
options = {
side_effects: true,
}
input: {
try {
(function() {})(...null);
} catch (e) {
console.log("PASS");
}
}
expect: {
try {
[ ...null ];
} catch (e) {
console.log("PASS");
}
}
expect_stdout: "PASS"
node_version: ">=6"
}
drop_empty_call_2: {
options = {
properties: true,
side_effects: true,
}
input: {
(function() {})(...[ console.log("PASS") ]);
}
expect: {
console.log("PASS");
}
expect_stdout: "PASS"
node_version: ">=6"
}
convert_hole: {
options = {
properties: true,
}
input: {
console.log(...[ "PASS", , 42 ]);
}
expect: {
console.log("PASS", void 0, 42);
}
expect_stdout: "PASS undefined 42"
node_version: ">=6"
}
keep_property_access: {
options = {
properties: true,
side_effects: true,
}
input: {
console.log(function() {
return [ ..."foo" ][0];
}());
}
expect: {
console.log(function() {
return [ ..."foo" ][0];
}());
}
expect_stdout: "f"
node_version: ">=6"
}
keep_fargs: {
options = {
keep_fargs: "strict",
unused: true,
}
input: {
var a = [ "PASS" ];
(function(b, c) {
console.log(c);
})(console, ...a);
}
expect: {
var a = [ "PASS" ];
(function(b, c) {
console.log(c);
})(console, ...a);
}
expect_stdout: "PASS"
node_version: ">=6"
}
reduce_vars_1: {
options = {
reduce_vars: true,
unused: true,
}
input: {
console.log(function(b, c) {
return c ? "PASS" : "FAIL";
}(..."foo"));
}
expect: {
console.log(function(b, c) {
return c ? "PASS" : "FAIL";
}(..."foo"));
}
expect_stdout: "PASS"
node_version: ">=6"
}
reduce_vars_2: {
options = {
conditionals: true,
evaluate: true,
reduce_vars: true,
}
input: {
console.log(function(b, c) {
return c ? "PASS" : "FAIL";
}(..."foo"));
}
expect: {
console.log(function(b, c) {
return c ? "PASS" : "FAIL";
}(..."foo"));
}
expect_stdout: "PASS"
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: {
options = {
side_effects: true,
}
input: {
({
...{
get p() {
console.log("PASS");
},
},
get q() {
console.log("FAIL");
},
});
}
expect: {
({
...{
get p() {
console.log("PASS");
},
},
});
}
expect_stdout: "PASS"
node_version: ">=8"
}
keep_accessor: {
options = {
properties: true,
}
input: {
var o = {
...{
get p() {
console.log("GET");
return this.r;
},
set q(v) {
console.log("SET", v);
},
r: 42,
},
r: null,
};
for (var k in o)
console.log(k, o[k]);
}
expect: {
var o = {
...{
get p() {
console.log("GET");
return this.r;
},
set q(v) {
console.log("SET", v);
},
r: 42,
},
r: null,
};
for (var k in o)
console.log(k, o[k]);
}
expect_stdout: [
"GET",
"p 42",
"q undefined",
"r null",
]
node_version: ">=8"
}
unused_var_side_effects: {
options = {
unused: true,
}
input: {
(function f(a) {
var b = {
...a,
};
})({
get p() {
console.log("PASS");
},
});
}
expect: {
(function(a) {
({
...a,
});
})({
get p() {
console.log("PASS");
},
});
}
expect_stdout: "PASS"
node_version: ">=8"
}