terser - npm Package Compare versions

Comparing version 3.16.1 to 3.17.0

CHANGELOG.md

 # Changelog
 
+## v3.17.0
+
+ - More DOM properties added to --mangle-properties's DOM property list
+ - Closed issue where if 2 functions had the same argument name, Terser would not inline them together properly
+ - Fixed issue with `hasOwnProperty.call`
+ - You can now list files to minify in a Terser config file
+ - Started replacing `new Array(<number>)` with an array literal
+ - Started using ES6 capabilities like `Set` and the `includes` method for strings and arrays
+
 ## v3.16.1
 
- - Fixed issue where Terser being imported with `import` would cause it not to work due to the `__esModule` property.
+ - Fixed issue where Terser being imported with `import` would cause it not to work due to the `__esModule` property. (PR #254 was submitted, which was nice, but since it wasn't a pure commonJS approach I decided to go with my own solution)
 
@@ -7,0 +16,0 @@ ## v3.16.0

package.json

@@ -7,3 +7,3 @@ {
   "license": "BSD-2-Clause",
-  "version": "3.16.1",
+  "version": "3.17.0",
   "engines": {
@@ -13,5 +13,3 @@ "node": ">=6.0.0"
   "maintainers": [
-    "Fábio Santos <[e-mail]>",
-    "Alex Lam <[e-mail]>",
-    "Mihai Bazon <[e-mail]> (http://lisperator.net/)"
+    "Fábio Santos <[e-mail]>"
   ],
@@ -27,3 +25,2 @@ "repository": "https://github.com/fabiosantoscode/terser.git",
     "dist",
-    "!dist/bundle.instrumented.js",
     "tools",
@@ -36,16 +33,13 @@ "LICENSE",
   "dependencies": {
-    "commander": "~2.17.1",
+    "commander": "^2.19.0",
     "source-map": "~0.6.1",
-    "source-map-support": "~0.5.9"
+    "source-map-support": "~0.5.10"
   },
   "devDependencies": {
     "acorn": "^6.0.4",
-    "coveralls": "^3.0.2",
     "cross-env": "^5.2.0",
     "csv": "^5.1.0",
-    "es6-promise": "^4.2.5",
     "escodegen": "^1.11.0",
     "eslint": "^4.19.1",
     "eslump": "^2.0.0",
-    "istanbul": "^0.4.5",
     "mocha": "^3.0.0",
@@ -56,11 +50,9 @@ "mochallel": "^1.8.6",
     "rollup": "^1.0.1",
-    "semver": "~5.5.1"
+    "semver": "~5.6.0"
   },
   "scripts": {
-    "test": "rimraf dist/* && npm run prepare && istanbul instrument dist/bundle.min.js > dist/bundle.instrumented.js && node test/run-tests.js",
-    "coverage": "istanbul cover test/run-tests.js",
-    "coveralls": "coveralls < coverage/lcov.info",
+    "test": "npm run prepare --silent && istanbul instrument dist/bundle.min.js > dist/bundle.instrumented.js && node test/run-tests.js",
     "lint": "eslint lib",
     "lint-fix": "eslint --fix lib",
-    "prepare": "rollup -c && cd dist && cross-env TERSER_NO_BUNDLE=1 ../bin/uglifyjs bundle.js -mc --source-map 'content=bundle.js.map,includeSources=true,url=bundle.min.js.map' -o bundle.min.js",
+    "prepare": "rimraf dist/* && rollup -c && cd dist && cross-env TERSER_NO_BUNDLE=1 ../bin/uglifyjs bundle.js -mc --source-map 'content=bundle.js.map,includeSources=true,url=bundle.min.js.map' -o bundle.min.js",
     "postversion": "echo 'Remember to update the changelog!'"
@@ -91,2 +83,11 @@ },
     },
+    "env": {
+      "es6": true
+    },
+    "globals": {
+      "describe": false,
+      "it": false,
+      "require": false,
+      "global": false
+    },
     "rules": {
@@ -93,0 +94,0 @@ "brace-style": [

README.md

@@ -8,3 +8,3 @@ terser
 
-*note*: You can support this project on patreon: <a target="_blank" rel="nofollow" href="https://www.patreon.com/terser_ecmacomp_maintainer"><img src="https://c5.patreon.com/external/logo/[e-mail]" alt="patron" width="100px" height="auto"></a>. Check out PATRONS.md for our first-tier patrons.
+*note*: You can support this project on patreon: <a target="_blank" rel="nofollow" href="https://www.patreon.com/fabiosantoscode"><img src="https://c5.patreon.com/external/logo/[e-mail]" alt="patron" width="100px" height="auto"></a>. Check out PATRONS.md for our first-tier patrons.
 
@@ -15,7 +15,9 @@ Terser recommends you use RollupJS to bundle your modules, as that produces smaller code overall.
 
-[![Build Status](https://travis-ci.org/terser-js/terser.svg?branch=master)](https://travis-ci.org/terser-js/terser) [![Coverage Status](https://coveralls.io/repos/github/terser-js/terser/badge.svg?branch=master)](https://coveralls.io/github/terser-js/terser?branch=master)
+[![Build Status](https://travis-ci.org/terser-js/terser.svg?branch=master)](https://travis-ci.org/terser-js/terser)
 
 Find the changelog in [CHANGELOG.md](https://github.com/terser-js/terser/blob/master/CHANGELOG.md)
 
+A JavaScript parser, mangler/compressor and beautifier toolkit for ES6+.
 
+
 Why choose terser?
@@ -92,2 +94,3 @@ ------------------
                                 `reserved`  List of names that should not be mangled.
+    -b, --beautify [options]     Specify output options:
                                 `preamble`  Preamble to prepend to the output. You
@@ -245,8 +248,25 @@ can use this to insert a comment, for
 
-**Note:** THIS *MIGHT* BREAK YOUR CODE.  Mangling property names
-is a separate step, different from variable name mangling.  Pass
-`--mangle-props` to enable it.  It will mangle all properties in the
+**Note:** THIS **WILL** BREAK YOUR CODE. A good rule of thumb is not to use this unless you know exactly what you're doing and how this works and read this section until the end.
+
+Mangling property names is a separate step, different from variable name mangling.  Pass
+`--mangle-props` to enable it. The least dangerous
+way to use this is to use the `regex` option like so:
+
+```
+terser example.js -c -m --mangle-props regex=/_$/
+```
+
+This will mangle all properties that start with an 
+underscore. So you can use it to mangle internal methods.
+
+By default, it will mangle all properties in the
 input code with the exception of built in DOM properties and properties
-in core JavaScript classes.  For example:
+in core JavaScript classes, which is what will break your code if you don't:
 
+1. Control all the code you're mangling
+2. Avoid using a module bundler, as they usually will call Terser on each file individually, making it impossible to pass mangled objects between modules.
+3. Avoid calling functions like `defineProperty` or `hasOwnProperty`, because they refer to object properties using strings and will break your code if you don't know what you are doing.
+
+An example:
+
 ```javascript
@@ -265,3 +285,3 @@ // example.js
 ```
-Mangle all properties (except for JavaScript `builtins`):
+Mangle all properties (except for JavaScript `builtins`) (**very** unsafe):
 ```bash
@@ -273,3 +293,3 @@ $ terser example.js -c -m --mangle-props
 ```
-Mangle all properties except for `reserved` properties:
+Mangle all properties except for `reserved` properties (still very unsafe):
 ```bash
@@ -281,3 +301,3 @@ $ terser example.js -c -m --mangle-props reserved=[foo_,bar_]
 ```
-Mangle all properties matching a `regex`:
+Mangle all properties matching a `regex` (not as unsafe but still unsafe):
 ```bash
@@ -476,2 +496,3 @@ $ terser example.js -c -m --mangle-props regex=/_$/
     output: {
+        beautify: false,
         preamble: "/* minified */"
@@ -934,3 +955,4 @@ }
 
-The code generator tries to output shortest code possible. Optionally you
+The code generator tries to output shortest code possible by default.  In
+case you want beautified output, pass `--beautify` (`-b`).  Optionally you
 can pass additional arguments that control the code output:
@@ -941,2 +963,7 @@
 
+- `beautify` (default `true`) -- whether to actually beautify the output.
+  Passing `-b` will set this to true, but you might need to pass `-b` even
+  when you want to generate minified code, in order to specify additional
+  arguments, so you can use `-b beautify=false` to override it.
+
 - `braces` (default `false`) -- always insert braces in `if`, `for`,
@@ -952,3 +979,4 @@ `do`, `while` or `with` statements, even if their body is a single
   greater to emit shorthand object properties - i.e.: `{a}` instead of `{a: a}`.
-  Non-compatible features in the abstract syntax tree will still
+  The `ecma` option will only change the output in direct control of the
+  beautifier. Non-compatible features in the abstract syntax tree will still
   be output as is. For example: an `ecma` setting of `5` will **not** convert
@@ -955,0 +983,0 @@ ES6+ code to ES5.

No alert changes

Improved metrics

Total package byte prevSize

3989944

increased by0.36%

Dev dependency count

12

decreased by-20%

Lines of code

28539

increased by0.02%

Number of lines in readme file

1306

increased by2.19%

Dependency changes

• + Addedcommander@2.20.3(transitive)

• - Removedcommander@2.17.1(transitive)

• Updatedcommander@^2.19.0

• Updatedsource-map-support@~0.5.10