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enhance reduce_vars & side_effects (#4712)

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This commit is contained in:
Alex Lam S.L
2021-03-02 05:43:10 +00:00
committed by GitHub
parent 62887f2c66
commit ee27d87a08
2 changed files with 247 additions and 24 deletions
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196
test/compress/classes.js
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@@ -269,6 +269,43 @@ block_scoped: {
node_version: ">=4"
}
drop_extends: {
options = {
inline: true,
passes: 2,
pure_getters: "strict",
reduce_vars: true,
sequences: true,
side_effects: true,
unused: true,
}
input: {
"use strict";
try {
(function() {
var f = () => {};
class A extends f {
get p() {}
}
A.q = 42;
return class B extends A {};
})();
} catch (e) {
console.log("PASS");
}
}
expect: {
"use strict";
try {
(class extends (() => {}) {});
} catch (e) {
console.log("PASS");
}
}
expect_stdout: "PASS"
node_version: ">=4"
}
keep_extends: {
options = {
toplevel: true,
@@ -370,7 +407,7 @@ static_side_effects: {
node_version: ">=12"
}
single_use: {
single_use_1: {
options = {
reduce_vars: true,
toplevel: true,
@@ -389,6 +426,163 @@ single_use: {
node_version: ">=4"
}
single_use_2: {
options = {
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
"use strict";
class A {
f(a) {
console.log(a);
}
}
new A().f("PASS");
}
expect: {
"use strict";
new class {
f(a) {
console.log(a);
}
}().f("PASS");
}
expect_stdout: "PASS"
node_version: ">=4"
}
single_use_3: {
options = {
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
"use strict";
class A {
f() {
return A;
}
}
console.log(typeof new A().f());
}
expect: {
"use strict";
console.log(typeof new class A {
f() {
return A;
}
}().f());
}
expect_stdout: "function"
node_version: ">=4"
}
single_use_4: {
options = {
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
"use strict";
console.log(new class A {
f() {
return typeof A;
}
}().f());
}
expect: {
"use strict";
console.log(new class A {
f() {
return typeof A;
}
}().f());
}
expect_stdout: "function"
node_version: ">=4"
}
single_use_5: {
options = {
reduce_vars: true,
unused: true,
}
input: {
function f() {
console.log("foo");
}
(function() {
"use strict";
class A extends f {
f() {
console.log("bar");
}
}
console.log("baz");
new A().f();
})();
}
expect: {
function f() {
console.log("foo");
}
(function() {
"use strict";
class A extends f {
f() {
console.log("bar");
}
}
console.log("baz");
new A().f();
})();
}
expect_stdout: [
"baz",
"foo",
"bar",
]
node_version: ">=4"
}
single_use_6: {
options = {
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
"use strict";
class A {
[(console.log("foo"), "f")]() {
console.log("bar");
}
}
console.log("baz");
new A().f();
}
expect: {
"use strict";
class A {
[(console.log("foo"), "f")]() {
console.log("bar");
}
}
console.log("baz");
new A().f();
}
expect_stdout: [
"foo",
"baz",
"bar",
]
node_version: ">=4"
}
collapse_non_strict: {
options = {
collapse_vars: true,