Matt Ellis 838de314ff Speed up `make install` for javascript projects ... To install a package, we copied the pacakge to the destination root, deleted the node_modules folder and then restored just the production dependencies. Because of how we were using yarn, this meant hitting the network, which sucks. Make two changes: 1. Copy over the yarn.lock file we created when we did our initial restore (e.g from `make ensure`) so yarn can reuse it. 2. Pass --offline to yarn when we do yarn install. Since we already installed the packages previously (as part of `make ensure`) they will be present in the cache and hence we do not need network access. This cuts the time spent in the make install step by half or more.		2017-11-29 10:59:42 -08:00
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common.mk	Speed up `make install` for javascript projects	2017-11-29 10:59:42 -08:00