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dead_code_1: {
options = {
dead_code: true
};
input: {
function f() {
a();
b();
x = 10;
return;
if (x) {
y();
}
}
}
expect: {
function f() {
a();
b();
x = 10;
return;
}
}
}
dead_code_2_should_warn: {
options = {
dead_code: true
};
input: {
function f() {
g();
x = 10;
throw "foo";
// completely discarding the `if` would introduce some
// bugs. UglifyJS v1 doesn't deal with this issue; in v2
// we copy any declarations to the upper scope.
if (x) {
y();
var x;
function g(){};
// but nested declarations should not be kept.
(function(){
var q;
function y(){};
})();
}
}
}
expect: {
function f() {
g();
x = 10;
throw "foo";
var x;
function g(){};
}
}
}
dead_code_constant_boolean_should_warn_more: {
options = {
dead_code : true,
loops : true,
booleans : true,
conditionals : true,
evaluate : true
};
input: {
while (!((foo && bar) || (x + "0"))) {
console.log("unreachable");
var foo;
function bar() {}
}
for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
asdf();
foo();
var moo;
}
}
expect: {
var foo;
function bar() {}
// nothing for the while
// as for the for, it should keep:
var x = 10, y;
var moo;
}
}
dead_code_const_declaration: {
options = {
dead_code : true,
loops : true,
booleans : true,
conditionals : true,
evaluate : true
};
input: {
var unused;
const CONST_FOO = false;
if (CONST_FOO) {
console.log("unreachable");
var moo;
function bar() {}
}
}
expect: {
var unused;
const CONST_FOO = !1;
var moo;
function bar() {}
}
}
dead_code_const_annotation: {
options = {
dead_code : true,
loops : true,
booleans : true,
conditionals : true,
evaluate : true
};
input: {
var unused;
/** @const */ var CONST_FOO_ANN = false;
if (CONST_FOO_ANN) {
console.log("unreachable");
var moo;
function bar() {}
}
}
expect: {
var unused;
var CONST_FOO_ANN = !1;
var moo;
function bar() {}
}
}
dead_code_const_annotation_complex_scope: {
options = {
dead_code : true,
loops : true,
booleans : true,
conditionals : true,
evaluate : true
};
input: {
var unused_var;
/** @const */ var test = 'test';
/** @const */ var CONST_FOO_ANN = false;
var unused_var_2;
if (CONST_FOO_ANN) {
console.log("unreachable");
var moo;
function bar() {}
}
if (test === 'test') {
var beef = 'good';
/** @const */ var meat = 'beef';
var pork = 'bad';
if (meat === 'pork') {
console.log('also unreachable');
} else if (pork === 'good') {
console.log('reached, not const');
}
}
}
expect: {
var unused_var;
var test = 'test';
var CONST_FOO_ANN = !1;
var unused_var_2;
var moo;
function bar() {}
var beef = 'good';
var meat = 'beef';
var pork = 'bad';
'good' === pork && console.log('reached, not const');
}
}
|
