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Support keep_fnames in compressor, and --keep-fnames. #552

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Passing `--keep-fnames` will enable it both for compressor/mangler, so that
function names will not be dropped (when unused) nor mangled.
This commit is contained in:
Mihai Bazon
2015-01-05 11:03:13 +02:00
parent e37b67d013
commit e1f0747e4c
2 changed files with 8 additions and 1 deletions
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6
bin/uglifyjs
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@@ -65,6 +65,7 @@ You need to pass an argument to this option to specify the name that your module
.describe("V", "Print version number and exit.") .describe("V", "Print version number and exit.")
.describe("noerr", "Don't throw an error for unknown options in -c, -b or -m.") .describe("noerr", "Don't throw an error for unknown options in -c, -b or -m.")
.describe("bare-returns", "Allow return outside of functions. Useful when minifying CommonJS modules.") .describe("bare-returns", "Allow return outside of functions. Useful when minifying CommonJS modules.")
.describe("keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.")
.alias("p", "prefix") .alias("p", "prefix")
.alias("o", "output") .alias("o", "output")
@@ -160,6 +161,11 @@ if (ARGS.screw_ie8) {
OUTPUT_OPTIONS.screw_ie8 = true; OUTPUT_OPTIONS.screw_ie8 = true;
} }
if (ARGS.keep_fnames) {
if (COMPRESS) COMPRESS.keep_fnames = true;
if (MANGLE) MANGLE.keep_fnames = true;
}
if (BEAUTIFY) if (BEAUTIFY)
UglifyJS.merge(OUTPUT_OPTIONS, BEAUTIFY); UglifyJS.merge(OUTPUT_OPTIONS, BEAUTIFY);

3
lib/compress.js
View File

@@ -62,6 +62,7 @@ function Compressor(options, false_by_default) {
unused : !false_by_default, unused : !false_by_default,
hoist_funs : !false_by_default, hoist_funs : !false_by_default,
keep_fargs : false, keep_fargs : false,
keep_fnames : false,
hoist_vars : false, hoist_vars : false,
if_return : !false_by_default, if_return : !false_by_default,
join_vars : !false_by_default, join_vars : !false_by_default,
@@ -1666,7 +1667,7 @@ merge(Compressor.prototype, {
OPT(AST_Function, function(self, compressor){ OPT(AST_Function, function(self, compressor){
self = AST_Lambda.prototype.optimize.call(self, compressor); self = AST_Lambda.prototype.optimize.call(self, compressor);
if (compressor.option("unused")) { if (compressor.option("unused") && !compressor.option("keep_fnames")) {
if (self.name && self.name.unreferenced()) { if (self.name && self.name.unreferenced()) {
self.name = null; self.name = null;
} }