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enhance pure_getters, reduce_vars & unused (#4863)

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This commit is contained in:
Alex Lam S.L
2021-04-24 00:17:30 +01:00
committed by GitHub
parent f46209b7e5
commit 9b8deff64d
6 changed files with 125 additions and 43 deletions
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2
test/compress/classes.js
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@@ -1546,6 +1546,8 @@ drop_unused_self_reference: {
options = {
pure_getters: "strict",
reduce_vars: true,
sequences: true,
side_effects: true,
toplevel: true,
unused: true,
}

6
test/compress/drop-unused.js
View File

@@ -2371,6 +2371,7 @@ function_parameter_ie8: {
issue_3664: {
options = {
pure_getters: "strict",
side_effects: true,
unused: true,
}
input: {
@@ -2381,7 +2382,7 @@ issue_3664: {
}
expect: {
console.log(function() {
var b = ([ b && console.log("FAIL") ].p = 0, 0);
var b = (b && console.log("FAIL"), 0, 0);
return "PASS";
}());
}
@@ -2391,6 +2392,7 @@ issue_3664: {
issue_3673: {
options = {
pure_getters: "strict",
sequences: true,
side_effects: true,
toplevel: true,
unused: true,
@@ -2401,8 +2403,6 @@ issue_3673: {
console.log("PASS");
}
expect: {
var a;
(a = [ a ]).p = 42;
console.log("PASS");
}
expect_stdout: "PASS"

2
test/compress/functions.js
View File

@@ -6026,6 +6026,8 @@ drop_unused_self_reference: {
options = {
pure_getters: "strict",
reduce_vars: true,
sequences: true,
side_effects: true,
toplevel: true,
unused: true,
}

74
test/compress/pure_getters.js
View File

@@ -1564,3 +1564,77 @@ issue_4803: {
}
expect_stdout: "PASS"
}
nested_property_assignments_1: {
options = {
pure_getters: "strict",
reduce_vars: true,
sequences: true,
side_effects: true,
toplevel: true,
unused: true,
}
input: {
var f;
((f = function() {
console.log("FAIL");
}).p = f).q = console.log("PASS");
}
expect: {
console.log("PASS");
}
expect_stdout: "PASS"
}
nested_property_assignments_2: {
options = {
pure_getters: "strict",
unused: true,
}
input: {
var o = {};
(function() {
var a;
(o.p = a = {}).q = "PASS";
})();
console.log(o.p.q);
}
expect: {
var o = {};
(function() {
(o.p = {}).q = "PASS";
})();
console.log(o.p.q);
}
expect_stdout: "PASS"
}
nested_property_assignments_3: {
options = {
collapse_vars: true,
pure_getters: true,
side_effects: true,
unused: true,
}
input: {
var o = { p: {} };
(function(a) {
console && a;
if (console) {
a = a.p;
a.q = a;
}
})(o);
console.log(o.p.q === o.p ? "PASS" : "FAIL");
}
expect: {
var o = { p: {} };
(function(a) {
console;
if (console)
(a = a.p).q = a;
})(o);
console.log(o.p.q === o.p ? "PASS" : "FAIL");
}
expect_stdout: "PASS"
}