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improve AST_ConciseMethod compression (#2202)

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p(){return x;} ---> p:()=>x

Optimization subject to the `compress` option `arrows`.
This commit is contained in:
Alex Lam S.L
2017-07-06 01:21:04 +08:00
committed by GitHub
parent fdbb1d09ef
commit f5c46db738
4 changed files with 177 additions and 20 deletions
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86
test/compress/object.js
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@@ -561,6 +561,32 @@ prop_arrow_to_concise_method: {
node_version: ">=6"
}
concise_method_to_prop_arrow: {
options = {
arrows: true,
ecma: 6,
}
input: {
console.log(({ a: () => 1 }).a());
console.log(({ a: () => { return 2; } }).a());
console.log(({ a() { return 3; } }).a());
console.log(({ a() { return this.b; }, b: 4 }).a());
}
expect: {
console.log({ a: () => 1 }.a());
console.log({ a: () => 2 }.a());
console.log({ a: () => 3 }.a());
console.log({ a() { return this.b; }, b: 4 }.a());
}
expect_stdout: [
"1",
"2",
"3",
"4",
]
node_version: ">=4"
}
prop_func_to_async_concise_method: {
options = {
ecma: 8,
@@ -648,19 +674,71 @@ prop_arrow_with_this: {
ecma: 6,
}
input: {
({
function run(arg) {
console.log(arg === this ? "global" : arg === foo ? "foo" : arg);
}
var foo = {
func_no_this: function() { run(); },
func_with_this: function() { run(this); },
arrow_no_this: () => { run(); },
arrow_with_this: () => { run(this); },
});
};
for (var key in foo) foo[key]();
}
expect: {
({
function run(arg) {
console.log(arg === this ? "global" : arg === foo ? "foo" : arg);
}
var foo = {
func_no_this() { run(); },
func_with_this() { run(this); },
arrow_no_this() { run(); },
arrow_with_this: () => { run(this); },
});
};
for (var key in foo) foo[key]();
}
expect_stdout: [
"undefined",
"foo",
"undefined",
"global",
]
node_version: ">=4"
}
prop_arrow_with_nested_this: {
options = {
ecma: 6,
}
input: {
function run(arg) {
console.log(arg === this ? "global" : arg === foo ? "foo" : arg);
}
var foo = {
func_func_this: function() { (function() { run(this); })(); },
func_arrow_this: function() { (() => { run(this); })(); },
arrow_func_this: () => { (function() { run(this); })(); },
arrow_arrow_this: () => { (() => { run(this); })(); },
};
for (var key in foo) foo[key]();
}
expect: {
function run(arg) {
console.log(arg === this ? "global" : arg === foo ? "foo" : arg);
}
var foo = {
func_func_this() { (function() { run(this); })(); },
func_arrow_this() { (() => { run(this); })(); },
arrow_func_this() { (function() { run(this); })(); },
arrow_arrow_this: () => { (() => { run(this); })(); },
};
for (var key in foo) foo[key]();
}
expect_stdout: [
"global",
"foo",
"global",
"global",
]
node_version: ">=4"
}