/usr/lib/nodejs/uglify-js/tools/node.js is in node-uglify 2.7.5-2+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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[process.stdout, process.stderr].forEach(function(stream){
if (stream._handle && stream._handle.setBlocking)
stream._handle.setBlocking(true);
});
var path = require("path");
var fs = require("fs");
var sourceMap;
try {
sourceMap = require("source-map");
} catch(e) {
}
var FILES = exports.FILES = [
"../lib/utils.js",
"../lib/ast.js",
"../lib/parse.js",
"../lib/transform.js",
"../lib/scope.js",
"../lib/output.js",
"../lib/compress.js",
"../lib/sourcemap.js",
"../lib/mozilla-ast.js",
"../lib/propmangle.js",
"./exports.js",
].map(function(file){
return fs.realpathSync(path.join(path.dirname(__filename), file));
});
var UglifyJS = exports;
new Function("MOZ_SourceMap", "exports", "DEBUG", FILES.map(function(file){
return fs.readFileSync(file, "utf8");
}).join("\n\n"))(
sourceMap,
UglifyJS,
!!global.UGLIFY_DEBUG
);
UglifyJS.AST_Node.warn_function = function(txt) {
console.error("WARN: %s", txt);
};
exports.minify = function(files, options) {
options = UglifyJS.defaults(options, {
spidermonkey : false,
outSourceMap : null,
outFileName : null,
sourceRoot : null,
inSourceMap : null,
sourceMapUrl : null,
sourceMapInline : false,
fromString : false,
warnings : false,
mangle : {},
mangleProperties : false,
nameCache : null,
output : null,
compress : {},
parse : {}
});
UglifyJS.base54.reset();
// 1. parse
var toplevel = null,
sourcesContent = {};
if (options.spidermonkey) {
toplevel = UglifyJS.AST_Node.from_mozilla_ast(files);
} else {
function addFile(file, fileUrl) {
var code = options.fromString
? file
: fs.readFileSync(file, "utf8");
sourcesContent[fileUrl] = code;
toplevel = UglifyJS.parse(code, {
filename: fileUrl,
toplevel: toplevel,
bare_returns: options.parse ? options.parse.bare_returns : undefined
});
}
if (!options.fromString) files = UglifyJS.simple_glob(files);
[].concat(files).forEach(function (files, i) {
if (typeof files === 'string') {
addFile(files, options.fromString ? i : files);
} else {
for (var fileUrl in files) {
addFile(files[fileUrl], fileUrl);
}
}
});
}
if (options.wrap) {
toplevel = toplevel.wrap_commonjs(options.wrap, options.exportAll);
}
// 2. compress
if (options.compress) {
var compress = { warnings: options.warnings };
UglifyJS.merge(compress, options.compress);
toplevel.figure_out_scope();
var sq = UglifyJS.Compressor(compress);
toplevel = sq.compress(toplevel);
}
// 3. mangle properties
if (options.mangleProperties || options.nameCache) {
options.mangleProperties.cache = UglifyJS.readNameCache(options.nameCache, "props");
toplevel = UglifyJS.mangle_properties(toplevel, options.mangleProperties);
UglifyJS.writeNameCache(options.nameCache, "props", options.mangleProperties.cache);
}
// 4. mangle
if (options.mangle) {
toplevel.figure_out_scope(options.mangle);
toplevel.compute_char_frequency(options.mangle);
toplevel.mangle_names(options.mangle);
}
// 5. output
var inMap = options.inSourceMap;
var output = {};
if (typeof options.inSourceMap == "string") {
inMap = JSON.parse(fs.readFileSync(options.inSourceMap, "utf8"));
}
if (options.outSourceMap || options.sourceMapInline) {
if (sourceMap) {
output.source_map = UglifyJS.SourceMap({
// prefer outFileName, otherwise use outSourceMap without .map suffix
file: options.outFileName || (typeof options.outSourceMap === 'string' ? options.outSourceMap.replace(/\.map$/i, '') : null),
orig: inMap,
root: options.sourceRoot
});
if (options.sourceMapIncludeSources) {
for (var file in sourcesContent) {
if (sourcesContent.hasOwnProperty(file)) {
output.source_map.get().setSourceContent(file, sourcesContent[file]);
}
}
}
} else {
console.error("source-map module is missing and needed by outSourceMap option");
}
}
if (options.output) {
UglifyJS.merge(output, options.output);
}
var stream = UglifyJS.OutputStream(output);
toplevel.print(stream);
var source_map = output.source_map;
if (source_map) {
source_map = source_map + "";
}
var mappingUrlPrefix = "\n//# sourceMappingURL=";
if (options.sourceMapInline) {
stream += mappingUrlPrefix + "data:application/json;charset=utf-8;base64," + new Buffer(source_map).toString("base64");
} else if (options.outSourceMap && typeof options.outSourceMap === "string" && options.sourceMapUrl !== false) {
stream += mappingUrlPrefix + (typeof options.sourceMapUrl === "string" ? options.sourceMapUrl : options.outSourceMap);
}
return {
code : stream + "",
map : source_map
};
};
// exports.describe_ast = function() {
// function doitem(ctor) {
// var sub = {};
// ctor.SUBCLASSES.forEach(function(ctor){
// sub[ctor.TYPE] = doitem(ctor);
// });
// var ret = {};
// if (ctor.SELF_PROPS.length > 0) ret.props = ctor.SELF_PROPS;
// if (ctor.SUBCLASSES.length > 0) ret.sub = sub;
// return ret;
// }
// return doitem(UglifyJS.AST_Node).sub;
// }
exports.describe_ast = function() {
var out = UglifyJS.OutputStream({ beautify: true });
function doitem(ctor) {
out.print("AST_" + ctor.TYPE);
var props = ctor.SELF_PROPS.filter(function(prop){
return !/^\$/.test(prop);
});
if (props.length > 0) {
out.space();
out.with_parens(function(){
props.forEach(function(prop, i){
if (i) out.space();
out.print(prop);
});
});
}
if (ctor.documentation) {
out.space();
out.print_string(ctor.documentation);
}
if (ctor.SUBCLASSES.length > 0) {
out.space();
out.with_block(function(){
ctor.SUBCLASSES.forEach(function(ctor, i){
out.indent();
doitem(ctor);
out.newline();
});
});
}
};
doitem(UglifyJS.AST_Node);
return out + "";
};
function readReservedFile(filename, reserved) {
if (!reserved) {
reserved = { vars: [], props: [] };
}
var data = fs.readFileSync(filename, "utf8");
data = JSON.parse(data);
if (data.vars) {
data.vars.forEach(function(name){
UglifyJS.push_uniq(reserved.vars, name);
});
}
if (data.props) {
data.props.forEach(function(name){
UglifyJS.push_uniq(reserved.props, name);
});
}
return reserved;
}
exports.readReservedFile = readReservedFile;
exports.readDefaultReservedFile = function(reserved) {
return readReservedFile(path.join(__dirname, "domprops.json"), reserved);
};
exports.readNameCache = function(filename, key) {
var cache = null;
if (filename) {
try {
var cache = fs.readFileSync(filename, "utf8");
cache = JSON.parse(cache)[key];
if (!cache) throw "init";
cache.props = UglifyJS.Dictionary.fromObject(cache.props);
} catch(ex) {
cache = {
cname: -1,
props: new UglifyJS.Dictionary()
};
}
}
return cache;
};
exports.writeNameCache = function(filename, key, cache) {
if (filename) {
var data;
try {
data = fs.readFileSync(filename, "utf8");
data = JSON.parse(data);
} catch(ex) {
data = {};
}
data[key] = {
cname: cache.cname,
props: cache.props.toObject()
};
fs.writeFileSync(filename, JSON.stringify(data, null, 2), "utf8");
}
};
// A file glob function that only supports "*" and "?" wildcards in the basename.
// Example: "foo/bar/*baz??.*.js"
// Argument `glob` may be a string or an array of strings.
// Returns an array of strings. Garbage in, garbage out.
exports.simple_glob = function simple_glob(glob) {
var results = [];
if (Array.isArray(glob)) {
glob.forEach(function(elem) {
results = results.concat(simple_glob(elem));
});
return results;
}
if (glob.match(/\*|\?/)) {
var dir = path.dirname(glob);
try {
var entries = fs.readdirSync(dir);
} catch (ex) {}
if (entries) {
var pattern = "^" + (path.basename(glob)
.replace(/\(/g, "\\(")
.replace(/\)/g, "\\)")
.replace(/\{/g, "\\{")
.replace(/\}/g, "\\}")
.replace(/\[/g, "\\[")
.replace(/\]/g, "\\]")
.replace(/\+/g, "\\+")
.replace(/\^/g, "\\^")
.replace(/\$/g, "\\$")
.replace(/\*/g, "[^/\\\\]*")
.replace(/\./g, "\\.")
.replace(/\?/g, ".")) + "$";
var mod = process.platform === "win32" ? "i" : "";
var rx = new RegExp(pattern, mod);
for (var i in entries) {
if (rx.test(entries[i]))
results.push(dir + "/" + entries[i]);
}
}
}
if (results.length === 0)
results = [ glob ];
return results;
};
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