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Fix walker not able to handle destr pattern in spread when compressing (#1438)

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This commit is contained in:
Anthony Van de Gejuchte
2017-04-03 19:23:22 +02:00
committed by Alex Lam S.L
parent 603d92effc
commit 2377171200
2 changed files with 12 additions and 2 deletions
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2
lib/compress.js
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@@ -1922,6 +1922,8 @@ merge(Compressor.prototype, {
else if (node.names[i] instanceof AST_Expansion) {
if (node.names[i].expression instanceof AST_Symbol) {
initializations.add(node.names[i].expression.name, destructuring_value);
} else if (node.names[i].expression instanceof AST_Destructuring) {
node.names[i].expression.walk(tw);
} else {
throw new Error(string_template("Can't handle expansion of type: {type}", {
type: Object.getPrototypeOf(node.names[i].expression).TYPE

12
test/compress/destructuring.js
View File

@@ -151,8 +151,12 @@ destructuring_remove_unused_1: {
function e() {
var unused = "foo";
var a = [1, 2, 3, 4, 5];
var x = [[1, 2, 3]];
var y = {h: 1};
var [b, ...c] = a;
f(b, c);
var [...[e, f]] = x;
var [...{g: h}] = y;
f(b, c, e, f, g);
}
}
expect: {
@@ -178,8 +182,12 @@ destructuring_remove_unused_1: {
}
function e() {
var a = [1, 2, 3, 4, 5];
var x = [[1, 2, 3]];
var y = {h: 1};
var [b, ...c] = a;
f(b, c);
var [...[e, f]] = x;
var [...{g: h}] = y;
f(b, c, e, f, g);
}
}
}