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8 changes: 4 additions & 4 deletions index.js
Original file line number Diff line number Diff line change
Expand Up @@ -2,12 +2,11 @@ const minimatch = require('minimatch').Minimatch
const convert = require('convert-source-map')
const through = require('through2')
const path = require('path')
const xtend = require('xtend')

module.exports = uglifyify

function uglifyify (file, opts) {
opts = xtend(opts || {})
opts = Object.assign({}, opts || {});

let debug = opts._flags && opts._flags.debug
// lazy require `terser` so uglifyify can be loaded on very old node.js versions
Expand All @@ -16,6 +15,7 @@ function uglifyify (file, opts) {
if (ignore(file, opts.ignore)) {
return through()
}
delete opts.ignore;

let buffer = ''
const exts = []
Expand Down Expand Up @@ -45,7 +45,7 @@ function uglifyify (file, opts) {
}, capture(function ready (callback) {
const stream = this
debug = opts.sourceMap !== false && debug
opts = xtend({
opts = Object.assign({
compress: true,
mangle: true,
sourceMap: {
Expand All @@ -57,7 +57,7 @@ function uglifyify (file, opts) {
mapArgv(opts)

if (typeof opts.compress === 'object') {
opts.compress = xtend(opts.compress || {})
opts.compress = Object.assign({}, opts.compress || {})
delete opts.compress._
}

Expand Down
3 changes: 1 addition & 2 deletions package.json
Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,7 @@
"convert-source-map": "^1.9.0",
"minimatch": "^3.0.2",
"terser": "^5.15.1",
"through2": "^4.0.2",
"xtend": "^4.0.1"
"through2": "^4.0.2"
},
"devDependencies": {
"bl": "^5.0.0",
Expand Down