We are certain that you’ll find this collection to fit any occasion you may have. Our selection of wines are curated by Parcelle Wines in New York City. This ensures quoted property accesses are mangled as intended, and that global names don't collide with local names.Wine and Liquor - Provided by Parcelle Wine. make two transform calls, the first to do property mangling only, and the second to do the remaining minification procedures. To fix these problems, you have to make two passes when using the property mangler. To solve this there would need to be an extra first-pass over all your scripts to collect all local variable names in use across all scripts the Babel architecture doesn't really have a good way to do this. if you mangle a number of separate scripts one after the other, it's not possible to choose global variable names that won't collide with local variables, because the mangler has to choose a name before it's seen all the local variable names.it doesn't need to, as long as you run the property mangler first.However this plugin does not check that mangled global names do not collide with local variable names. It makes sure the local variable names it chooses do not collide with global names. In addition to that, babel-plugin-minify-mangle-names mangles local variable names. If this is done before the property mangler sees it, it will be mangled anyway, even though it was written with the intent to not be mangled. More than one Babili plugin transform string properties to identifiers, i.e. This can be a useful obfuscation property. When enabled it makes the build non-deterministic, so building the same source twice will use completely different names each time (but not longer or shorter names, just different character choices). For example if set to xyz, then foo will instead mangle to _$foo$xyz_.īoolean to randomise the sequence of characters used when generating mangled names. This makes the mangling less effective at minifying the script, but can be useful for diagnosing name collision issues.īoolean to enable debug mode, which mangles names predictably and including the original name, e.g. For example pass g_ and the name A will instead be mangled to g_A. By default this is an empty string (so short names are chosen like A). See domprops.json for a default list to pass for scripts used in a browser context. "setAttribute", or custom external API names. Instead there is a hack where it always uses the same name cache defined at the top level of the babel plugin.) All plugin optionsĪrray of property names to not be mangled, e.g. (Note: "mangled together" means sharing a name cache between scripts currently this is not supported because I can't find a way to share objects between plugin calls ( TODO). When scripts are mangled together the mangler ensures that the same property name always mangles the same way. This helps identify if separate scripts are being mangled independently of each other, which may cause the same property name to mangle to two different names and break things. One technique is to ensure every script is mangled with a random number in the suffix. For example setting a debug suffix of "xyz" will cause o.foo to mangle to o._$foo$xyz_. You may also specify a debugSuffix option which adds a custom string in to the debug mangled name. This makes the next step obvious: locate references to o.myApiCall(), and ensure you use o() syntax instead - or add "myApiCall" to the reserved names list. This can turn errors like "cannot call A on undefined" in to "cannot call _$myApiCall$_ on undefined". This means code is still readable after mangling, but the property names have still been altered to reproduce any bugs caused by mangling. In debug mode, o.foo mangles to o._$foo$_. To help diagnose problems, there is a debug option you can enable to mangle names predictably. It is very difficult to work with mangled code if you find it doesn't work any more after mangling. The only exceptions to this are the terms window, self, global and exports (currently hard-coded), in which case only the property is mangled. This saves you from having to mangle your scripts in the right order (since otherwise you would have to mangle the script that said window.foo =. If you simply use foo.bar = 1, and foo does not refer to a local variable, foo is still mangled. The mangler does not have to see a global definition first. Note currently globals defined with var are not considered.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |