11import nodeResolve from 'rollup-plugin-node-resolve' ;
2- import { uglify } from 'rollup-plugin-uglify ' ;
2+ import { terser } from 'rollup-plugin-terser ' ;
33import sourcemaps from 'rollup-plugin-sourcemaps' ;
44
55const MINIFY = process . env . MINIFY ;
@@ -27,9 +27,9 @@ banner += `
2727 * @license MIT License, http://www.opensource.org/licenses/MIT
2828 */` ;
2929
30- const uglifyOpts = { output : { } } ;
30+ const terserOpts = { output : { } } ;
3131// retain multiline comment with @license
32- uglifyOpts . output . comments = ( node , comment ) => comment . type === 'comment2' && / @ l i c e n s e / i. test ( comment . value ) ;
32+ terserOpts . output . comments = ( node , comment ) => comment . type === 'comment2' && / @ l i c e n s e / i. test ( comment . value ) ;
3333
3434const onwarn = ( warning ) => {
3535 // Suppress this error message... https://github.com/rollup/rollup/wiki/Troubleshooting#this-is-undefined
@@ -41,7 +41,7 @@ const onwarn = (warning) => {
4141
4242const plugins = [ nodeResolve ( { jsnext : true } ) , sourcemaps ( ) ] ;
4343
44- if ( MINIFY ) plugins . push ( uglify ( uglifyOpts ) ) ;
44+ if ( MINIFY ) plugins . push ( terser ( terserOpts ) ) ;
4545
4646const extension = MINIFY ? '.min.js' : '.js' ;
4747
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