JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix corner case in hoist_funs (#4790)

Browse Source
This commit is contained in:
Alex Lam S.L
2021-03-16 17:48:23 +00:00
committed by GitHub
parent 9a9543013c
commit b872ffee01
2 changed files with 23 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
lib/compress.js
View File

@@ -6801,21 +6801,25 @@ merge(Compressor.prototype, {
var dirs = [];
var hoisted = [];
var vars = new Dictionary(), vars_found = 0;
var tt = new TreeTransformer(function(node) {
var tt = new TreeTransformer(function(node, descend, in_list) {
if (node === self) return;
if (node instanceof AST_Directive) {
dirs.push(node);
return make_node(AST_EmptyStatement, node);
return in_list ? List.skip : make_node(AST_EmptyStatement, node);
}
if (node instanceof AST_Defun) {
if (node instanceof AST_LambdaDefinition) {
if (!hoist_funs) return node;
if (tt.parent() !== self && compressor.has_directive("use strict")) return node;
var p = tt.parent();
if (p instanceof AST_ExportDeclaration) return node;
if (p instanceof AST_ExportDefault) return node;
if (p !== self && compressor.has_directive("use strict")) return node;
hoisted.push(node);
return make_node(AST_EmptyStatement, node);
return in_list ? List.skip : make_node(AST_EmptyStatement, node);
}
if (node instanceof AST_Var) {
if (!hoist_vars) return node;
if (tt.parent() instanceof AST_ExportDeclaration) return node;
var p = tt.parent();
if (p instanceof AST_ExportDeclaration) return node;
if (!all(node.definitions, function(defn) {
var sym = defn.name;
return sym instanceof AST_SymbolVar
@@ -6827,17 +6831,14 @@ merge(Compressor.prototype, {
++vars_found;
});
var seq = node.to_assignments();
var p = tt.parent();
if (p instanceof AST_ForEnumeration && p.init === node) {
if (seq) return seq;
var def = node.definitions[0].name;
return make_node(AST_SymbolRef, def, def);
}
if (p instanceof AST_For && p.init === node) return seq;
if (!seq) return make_node(AST_EmptyStatement, node);
return make_node(AST_SimpleStatement, node, {
body: seq
});
if (!seq) return in_list ? List.skip : make_node(AST_EmptyStatement, node);
return make_node(AST_SimpleStatement, node, { body: seq });
}
if (node instanceof AST_Scope) return node;
if (node instanceof AST_SymbolConst) {