[Pkg-javascript-devel] Bug#933488: webpack 4 production mode is broken: Error: Cannot find module 'worker-farm'

[Pirate Praveen]

Package: webpack
Version: 4.7.0-1
Severity: grave

Reproducible on node-url-parse and node-axios git master. Though 
dpkg-buildpackage works, fails only in sbuild. I wonder if related to 
#932659

webpack --config debian/webpack.config.js --output-library=URLParse \
--entry index.js --output dist/url-parse.min.js --mode production
/usr/share/nodejs/webpack/node_modules/webpack-cli/bin/cli.js:281
				throw err;
				^

Error: Cannot find module 'worker-farm'
Require stack:
- /usr/share/nodejs/uglifyjs-webpack-plugin/dist/uglify/Runner.js
- /usr/share/nodejs/uglifyjs-webpack-plugin/dist/index.js
- /usr/share/nodejs/uglifyjs-webpack-plugin/dist/cjs.js
- /usr/share/nodejs/webpack/lib/WebpackOptionsDefaulter.js
- /usr/share/nodejs/webpack/lib/webpack.js
- 
/usr/share/nodejs/webpack/node_modules/webpack-cli/bin/utils/convert-argv.js
- /usr/share/nodejs/webpack/node_modules/webpack-cli/bin/cli.js
- /usr/share/nodejs/webpack/bin/webpack.js
     at Function.Module._resolveFilename 
(internal/modules/cjs/loader.js:610:15)
     at Function.Module._load (internal/modules/cjs/loader.js:526:27)
     at Module.require (internal/modules/cjs/loader.js:666:19)
     at require 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
     at Object.<anonymous> 
(/usr/share/nodejs/uglifyjs-webpack-plugin/dist/uglify/Runner.js:21:19)
     at Module._compile 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:192:30)
     at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:770:10)
     at Module.load (internal/modules/cjs/loader.js:628:32)
     at Function.Module._load (internal/modules/cjs/loader.js:555:12)
     at Module.require (internal/modules/cjs/loader.js:666:19)
     at require 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
     at Object.<anonymous> 
(/usr/share/nodejs/uglifyjs-webpack-plugin/dist/index.js:40:15)
     at Module._compile 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:192:30)
     at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:770:10)
     at Module.load (internal/modules/cjs/loader.js:628:32)
     at Function.Module._load (internal/modules/cjs/loader.js:555:12)
     at Module.require (internal/modules/cjs/loader.js:666:19)
     at require 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
     at Object.<anonymous> 
(/usr/share/nodejs/uglifyjs-webpack-plugin/dist/cjs.js:3:18)
     at Module._compile 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:192:30)
     at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:770:10)
     at Module.load (internal/modules/cjs/loader.js:628:32)
     at Function.Module._load (internal/modules/cjs/loader.js:555:12)
     at Module.require (internal/modules/cjs/loader.js:666:19)
     at require 
(/usr/share/nodejs/webpack/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
     at Object.apply 
(/usr/share/nodejs/webpack/lib/WebpackOptionsDefaulter.js:283:29)
     at WebpackOptionsApply.process 
(/usr/share/nodejs/webpack/lib/WebpackOptionsApply.js:340:15)
     at webpack (/usr/share/nodejs/webpack/lib/webpack.js:42:48)
     at processOptions 
(/usr/share/nodejs/webpack/node_modules/webpack-cli/bin/cli.js:272:16)
     at 
/usr/share/nodejs/webpack/node_modules/webpack-cli/bin/cli.js:363:3
     at Object.parse (/usr/lib/nodejs/yargs/yargs.js:543:18)
     at 
/usr/share/nodejs/webpack/node_modules/webpack-cli/bin/cli.js:49:8
     at Object.<anonymous> 
(/usr/share/nodejs/webpack/node_modules/webpack-cli/bin/cli.js:365:3)
     at Module._compile (internal/modules/cjs/loader.js:759:30)
     at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:770:10)
     at Module.load (internal/modules/cjs/loader.js:628:32)