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fix corner cases in typeofs (#5301)

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This commit is contained in:
Alex Lam S.L
2022-01-17 06:03:41 +00:00
committed by GitHub
parent 43807c26fb
commit 35d7f316ef
3 changed files with 139 additions and 7 deletions
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100
test/compress/typeof.js
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@@ -527,6 +527,102 @@ reassign_conditional: {
node_version: ">=15"
}
reassign_do: {
options = {
comparisons: true,
conditionals: true,
if_return: true,
passes: 2,
reduce_vars: true,
typeofs: true,
}
input: {
A = console;
(function() {
if ("undefined" == typeof A)
return;
var a = A, i = 2;
do {
console.log(void 0 === A, void 0 === a);
A = void 0;
} while (--i);
})();
}
expect: {
A = console;
(function() {
if ("undefined" != typeof A) {
var a = A, i = 2;
do {
console.log(void 0 === A, (a, false));
A = void 0;
} while (--i);
}
})();
}
expect_stdout: [
"false false",
"true false",
]
}
reassign_for: {
options = {
comparisons: true,
conditionals: true,
passes: 2,
reduce_vars: true,
toplevel: true,
typeofs: true,
}
input: {
if (A = console, "undefined" != typeof A)
for (var a = A, i = 0; i < 2; i++)
console.log(void 0 === A, void 0 === a),
A = void 0;
}
expect: {
if (A = console, "undefined" != typeof A)
for (var a = A, i = 0; i < 2; i++)
console.log(void 0 === A, (a, false)),
A = void 0;
}
expect_stdout: [
"false false",
"true false",
]
}
reassign_for_in: {
options = {
comparisons: true,
conditionals: true,
passes: 2,
reduce_vars: true,
typeofs: true,
}
input: {
(A = console) && "undefined" != typeof A && function(a) {
for (var k in [ a = A, 42 ]) {
console.log(void 0 === A, void 0 === a);
A = void 0;
}
}();
}
expect: {
(A = console) && "undefined" != typeof A && function(a) {
for (var k in [ a = A, 42 ]) {
console.log(void 0 === A, (a, false));
A = void 0;
}
}();
}
expect_stdout: [
"false false",
"true false",
]
}
reassign_iife: {
options = {
comparisons: true,
@@ -564,7 +660,7 @@ reassign_property: {
console.log("FAIL 1");
else {
A.p = void 0;
while (console.log(void 0 === A ? "FAIL 2" : "PASS"));
console.log(void 0 === A ? "FAIL 2" : "PASS");
}
}
expect: {
@@ -573,7 +669,7 @@ reassign_property: {
console.log("FAIL 1");
else {
A.p = void 0;
while (console.log((A, false) ? "FAIL 2" : "PASS"));
console.log((A, false) ? "FAIL 2" : "PASS");
}
}
expect_stdout: "PASS"