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| author | Alex Lam S.L <alexlamsl@gmail.com> | 2018-01-19 23:47:42 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-01-19 23:47:42 +0800 |
| commit | 069df27bf18247a3e2f1d1a4abd0ee4fe28ef0ce (patch) | |
| tree | 5c14f7b08aac48b1d8655ccac4faa08356d3251b /lib | |
| parent | 3e7873217cad8b6f67839cb06d1e126ca231bc42 (diff) | |
| download | tracifyjs-069df27bf18247a3e2f1d1a4abd0ee4fe28ef0ce.tar.gz tracifyjs-069df27bf18247a3e2f1d1a4abd0ee4fe28ef0ce.zip | |
enable `unsafe` for `test/ufuzz.js` (#2819)
- introduce `unsafe_undefined`
- safer `.toString()` compression
Miscellaneous
- rename `unsafe_Function`
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/compress.js | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/lib/compress.js b/lib/compress.js index 5235a05f..49185aec 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -84,10 +84,11 @@ function Compressor(options, false_by_default) { typeofs : !false_by_default, unsafe : false, unsafe_comps : false, - unsafe_Func : false, + unsafe_Function: false, unsafe_math : false, unsafe_proto : false, unsafe_regexp : false, + unsafe_undefined: false, unused : !false_by_default, warnings : false, }, true); @@ -4100,11 +4101,13 @@ merge(Compressor.prototype, { break; } else if (exp instanceof AST_Dot) switch(exp.property) { case "toString": - if (self.args.length == 0) return make_node(AST_Binary, self, { - left: make_node(AST_String, self, { value: "" }), - operator: "+", - right: exp.expression - }).optimize(compressor); + if (self.args.length == 0 && !exp.expression.may_throw_on_access(compressor)) { + return make_node(AST_Binary, self, { + left: make_node(AST_String, self, { value: "" }), + operator: "+", + right: exp.expression + }).optimize(compressor); + } break; case "join": if (exp.expression instanceof AST_Array) EXIT: { @@ -4212,7 +4215,7 @@ merge(Compressor.prototype, { break; } } - if (compressor.option("unsafe_Func") + if (compressor.option("unsafe_Function") && is_undeclared_ref(exp) && exp.name == "Function") { // new Function() => function(){} @@ -5220,7 +5223,7 @@ merge(Compressor.prototype, { } OPT(AST_Undefined, function(self, compressor){ - if (compressor.option("unsafe")) { + if (compressor.option("unsafe_undefined")) { var undef = find_variable(compressor, "undefined"); if (undef) { var ref = make_node(AST_SymbolRef, self, { |