fix: disable inline optimization by default

README.md

@@ -164,8 +164,8 @@ Number of concurrent runs.
 |**`warnings`**|`{Boolean}`|`false`|Display Warnings|
 |**[`parse`](https://github.com/mishoo/UglifyJS2/tree/harmony#parse-options)**|`{Object}`|`{}`|Additional Parse Options|
 |**[`compress`](https://github.com/mishoo/UglifyJS2/tree/harmony#compress-options)**|`{Boolean\|Object}`|`true`|Additional Compress Options|
-|**[`mangle`](https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-options)**|`{Boolean\|Object}`|`true`|Enable Name Mangling (See [Mangle Properties](https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-properties-options) for advanced setups, use with ⚠️)|
-|**[`output`](https://github.com/mishoo/UglifyJS2/tree/harmony#output-options)**|`{Object}`|`{}`|Additional Output Options (The defaults are optimized for best compression)|
+|**[`mangle`](https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-options)**|`{Boolean\|Object}`|`{inline: false}`|Enable Name Mangling (See [Mangle Properties](https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-properties-options) for advanced setups, use with ⚠️)|
+|**[`output`](https://github.com/mishoo/UglifyJS2/tree/harmony#output-options)**|`{Object}`|`{comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/,}`|Additional Output Options (The defaults are optimized for best compression)|
 |**`toplevel`**|`{Boolean}`|`false`|Enable top level variable and function name mangling and to drop unused variables and functions|
 |**`nameCache`**|`{Object}`|`null`|Enable cache of mangled variable and property names across multiple invocations|
 |**`ie8`**|`{Boolean}`|`false`|Enable IE8 Support|

src/index.js

@@ -42,6 +42,9 @@ class UglifyJsPlugin {
       include,
       exclude,
       uglifyOptions: {
+        compress: {
+          inline: 1,
+        },
         output: {
           comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/,
         },

src/uglify/minify.js

@@ -21,17 +21,18 @@ const buildUglifyOptions = ({
 } = {}) => ({
   ecma,
   warnings,
-  parse,
-  compress,
-  mangle: mangle == null ? true : mangle,
+  parse: { ...parse },
+  compress: typeof compress === 'boolean' ? compress : { ...compress },
+  // eslint-disable-next-line no-nested-ternary
+  mangle: mangle == null ? true : typeof mangle === 'boolean' ? mangle : { ...mangle },
   output: {
     shebang: true,
     comments: false,
     beautify: false,
     semicolons: true,
     ...output,
   },
-  // Ignoring sourcemap from options
+  // Ignoring sourceMap from options
   sourceMap: null,
   toplevel,
   nameCache,