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fix corner case in booleans (#3691)

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fixes #3690
This commit is contained in:
Alex Lam S.L
2020-01-28 02:04:44 +08:00
committed by GitHub
parent 36a430cd1e
commit 0dcedad2d5
2 changed files with 24 additions and 2 deletions
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4
lib/compress.js
View File

@@ -4453,7 +4453,7 @@ merge(Compressor.prototype, {
var ev = value.is_truthy() || value.tail_node().evaluate(compressor);
if (!ev) {
value = value.drop_side_effect_free(compressor);
if (node.value !== value) node.value = value ? make_sequence(node.value, [
node.value = value ? make_sequence(node.value, [
value,
make_node(AST_Number, node.value, {
value: 0
@@ -4461,7 +4461,7 @@ merge(Compressor.prototype, {
]) : null;
} else if (ev && !(ev instanceof AST_Node)) {
value = value.drop_side_effect_free(compressor);
if (node.value !== value) node.value = value ? make_sequence(node.value, [
node.value = value ? make_sequence(node.value, [
value,
make_node(AST_Number, node.value, {
value: 1

22
test/compress/booleans.js
View File

@@ -131,3 +131,25 @@ issue_3658: {
}
expect_stdout: "PASS"
}
issue_3690: {
options = {
booleans: true,
unused: true,
}
input: {
console.log(function(a) {
return function() {
return a = [ this ];
}() ? "PASS" : "FAIL";
}());
}
expect: {
console.log(function(a) {
return function() {
return 1;
}() ? "PASS" : "FAIL";
}());
}
expect_stdout: "PASS"
}