JoBoEVD/UglifyJS
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reduce memory pressure via bit fields (#5203)

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This commit is contained in:
Alex Lam S.L
2021-12-06 03:30:05 +00:00
committed by GitHub
parent b0799105c2
commit 033d8d9405
8 changed files with 97 additions and 21 deletions
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bin/uglifyjs
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@@ -10,7 +10,9 @@ var info = require("../package.json");
var path = require("path");
var UglifyJS = require("../tools/node");
var skip_keys = [ "cname", "fixed", "inlined", "parent_scope", "scope", "uses_eval", "uses_with" ];
var skip_keys = [ "cname", "fixed", "inlined", "length_read", "parent_scope", "scope" ];
var truthy_keys = [ "optional", "pure", "terminal", "uses_arguments", "uses_eval", "uses_with" ];
var files = {};
var options = {};
var short_forms = {
@@ -430,7 +432,7 @@ function run() {
case "thedef":
return symdef(value);
}
if (skip_key(key)) return;
if (skip_property(key, value)) return;
if (value instanceof UglifyJS.AST_Token) return;
if (value instanceof UglifyJS.Dictionary) return;
if (value instanceof UglifyJS.AST_Node) {
@@ -559,8 +561,10 @@ function parse_js(value, options, flag) {
return options;
}
function skip_key(key) {
return skip_keys.indexOf(key) >= 0;
function skip_property(key, value) {
return skip_keys.indexOf(key) >= 0
// only skip truthy_keys if their value is falsy
|| truthy_keys.indexOf(key) >= 0 && !value;
}
function symdef(def) {