can't build

[timotheecour]

make watch
./node_modules/.bin/webpack -w
make: ./node_modules/.bin/webpack: No such file or directory
make: *** [watch] Error 1

npm install

make watch
./node_modules/.bin/webpack -w
Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.

• configuration.output.path: The provided value "extension/js" is not an absolute path!