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drop assignment in AST_VarDef.value (#2522)

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fixes #2516
This commit is contained in:
Alex Lam S.L
2017-11-28 13:08:40 +08:00
committed by GitHub
parent b37a68c84f
commit ecc9f6b770
3 changed files with 118 additions and 37 deletions
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80
test/compress/drop-unused.js
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@@ -1299,3 +1299,83 @@ issue_2288: {
}
}
}
issue_2516_1: {
options = {
collapse_vars: true,
reduce_funcs: true,
reduce_vars: true,
unused: true,
}
input: {
function foo() {
function qux(x) {
bar.call(null, x);
}
function bar(x) {
var FOUR = 4;
var trouble = x || never_called();
var value = (FOUR - 1) * trouble;
console.log(value == 6 ? "PASS" : value);
}
Baz = qux;
}
var Baz;
foo();
Baz(2);
}
expect: {
function foo() {
Baz = function(x) {
(function(x) {
var trouble = x || never_called();
var value = (4 - 1) * trouble;
console.log(6 == value ? "PASS" : value);
}).call(null, x);
};
}
var Baz;
foo();
Baz(2);
}
}
issue_2516_2: {
options = {
collapse_vars: true,
reduce_funcs: true,
reduce_vars: true,
passes: 2,
unused: true,
}
input: {
function foo() {
function qux(x) {
bar.call(null, x);
}
function bar(x) {
var FOUR = 4;
var trouble = x || never_called();
var value = (FOUR - 1) * trouble;
console.log(value == 6 ? "PASS" : value);
}
Baz = qux;
}
var Baz;
foo();
Baz(2);
}
expect: {
function foo() {
Baz = function(x) {
(function(x) {
var value = (4 - 1) * (x || never_called());
console.log(6 == value ? "PASS" : value);
}).call(null, x);
};
}
var Baz;
foo();
Baz(2);
}
}