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Fix negate_iife transform to return a correct tree for nested IIFEs

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Fix for #1256, partially reverts d854523783
This commit is contained in:
Richard van Velzen
2016-08-17 11:43:50 +02:00
parent 614db97cca
commit 8430123e9d
4 changed files with 29 additions and 3 deletions
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9
lib/compress.js
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@@ -831,6 +831,13 @@ merge(Compressor.prototype, {
};
function negate_iifes(statements, compressor) {
function is_iife_call(node) {
if (node instanceof AST_Call) {
return node.expression instanceof AST_Function || is_iife_call(node.expression);
}
return false;
}
statements.forEach(function(stat){
if (stat instanceof AST_SimpleStatement) {
stat.body = (function transform(thing) {
@@ -838,7 +845,7 @@ merge(Compressor.prototype, {
if (node instanceof AST_New) {
return node;
}
if (node instanceof AST_Call && node.expression instanceof AST_Function) {
if (is_iife_call(node)) {
return make_node(AST_UnaryPrefix, node, {
operator: "!",
expression: node