@pc /cygdrive/c/Program Files/nodejs/clienty
$ gulp build-main --force
[20:30:50] Using gulpfile C:\Program Files\nodejs\clienty\gulpfile.js
[20:30:50] Starting 'concat-develop-sources'...
[20:30:50] Starting 'concat-develop-vendors'...
[20:30:50] Starting 'templates'...
[20:30:50] Starting 'less'...
√ Finished tmp\style.css (123 ms)
[20:31:07] Finished 'less' after 17 s
[20:31:07] Starting 'concat-style'...
[20:31:07] Finished 'concat-style' after 156 ms
[20:31:07] Starting 'copy-build-testnet-normal'...
[20:31:07] Starting 'copy-build-testnet-min'...
[20:31:07] Starting 'copy-build-mainnet-normal'...
[20:31:07] Starting 'copy-build-mainnet-min'...
Source and destination must not be the same.
Source and destination must not be the same.
Source and destination must not be the same.
Source and destination must not be the same.
[20:31:08] Finished 'concat-develop-vendors' after 18 s
[20:31:08] Finished 'templates' after 18 s
[20:31:08] Finished 'concat-develop-sources' after 18 s
[20:31:08] Starting 'concat-develop'...
[20:31:08] Finished 'concat-develop' after 35 μs
[20:31:08] Starting 'babel'...
[20:31:10] Finished 'babel' after 2.41 s
[20:31:10] Starting 'concat-build-testnet-normal'...
[20:31:10] Starting 'uglify'...
[20:31:10] Starting 'concat-build-mainnet-normal'...
(node:14708) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 89): Error: Command failed: ./node_modules/.bin/uglifyjs dist\tmp\js\bundle.js -o ./dist/tmp/js/bundle.min.                             js
'.' is not recognized as an internal or external command,
operable program or batch file.

(node:14708) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exi                             t code.
[20:31:10] Finished 'concat-build-testnet-normal' after 75 ms
[20:31:10] Finished 'concat-build-mainnet-normal' after 66 ms

@pc /cygdrive/c/Program Files/nodejs/clienty