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fix destructing crash in reduce_vars

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fixes #1531
This commit is contained in:
alexlamsl
2017-03-03 07:23:46 +08:00
parent 0b77d861a8
commit f704e9b65c
2 changed files with 51 additions and 5 deletions
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14
lib/compress.js
View File

@@ -205,12 +205,16 @@ merge(Compressor.prototype, {
} }
} }
if (node instanceof AST_VarDef) { if (node instanceof AST_VarDef) {
var d = node.name.definition(); if (node.name instanceof AST_Destructuring) {
if (d.fixed === undefined) { node.name.walk(suppressor);
d.fixed = node.value || make_node(AST_Undefined, node);
mark_as_safe(d);
} else { } else {
d.fixed = false; var d = node.name.definition();
if (d.fixed === undefined) {
d.fixed = node.value || make_node(AST_Undefined, node);
mark_as_safe(d);
} else {
d.fixed = false;
}
} }
} }
var iife; var iife;

42
test/compress/destructuring.js
View File

@@ -251,3 +251,45 @@ destructuring_dont_evaluate_with_undefined_as_default_assignment: {
[foo = void 0] = bar; [foo = void 0] = bar;
} }
} }
reduce_vars: {
options = {
reduce_vars: true,
}
input: {
{const [aa, [bb, cc]] = dd;}
{let [aa, [bb, cc]] = dd;}
var [aa, [bb, cc]] = dd;
[aa, [bb, cc]] = dd;
{const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
{let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
({aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}});
const [{a},b] = c;
let [{a},b] = c;
var [{a},b] = c;
[{a},b] = c;
for (const [x,y] in pairs);
for (let [x,y] in pairs);
for (var [x,y] in pairs);
for ([x,y] in pairs);
}
expect: {
{const [aa, [bb, cc]] = dd;}
{let [aa, [bb, cc]] = dd;}
var [aa, [bb, cc]] = dd;
[aa, [bb, cc]] = dd;
{const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
{let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
({aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}});
const [{a},b] = c;
let [{a},b] = c;
var [{a},b] = c;
[{a},b] = c;
for (const [x,y] in pairs);
for (let [x,y] in pairs);
for (var [x,y] in pairs);
for ([x,y] in pairs);
}
}