Build tool and bindings loader for node-gyp that supports prebuilds

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Build tool and bindings loader for node-gypnode-gyp that supports prebuilds.

npm install node-gyp-build

Use together with prebuildifyprebuildify to easily support prebuilds for your native modules.


Note. Prebuild names have changed in prebuildify@3prebuildify and node-gyp-build@4. Please see the documentation below.

node-gyp-build works similar to node-gyp buildnode-gyp except that it will check if a build or prebuild is present before rebuilding your project.
It's main intended use is as an npm install script and bindings loader for native modules that bundle prebuilds using prebuildifyprebuildify.
First add node-gyp-build as an install script to your native project
  "scripts": {
    "install": "node-gyp-build"

Then in your index.js, instead of using the bindings module use node-gyp-build to load your binding.
var binding = require('node-gyp-build')(__dirname)

If you do these two things and bundle prebuilds with prebuildifyprebuildify your native module will work for most platforms without having to compile on install time AND will work in both node and electron without the need to recompile between usage.
Users can override node-gyp-build and force compiling by doing npm install --build-from-source.
Prebuilds will be attempted loaded from MODULE_PATH/prebuilds/... and then next EXEC_PATH/prebuilds/... (the latter allowing use with zeit/pkg)

Supported prebuild names

If so desired you can bundle more specific flavors, for example musl builds to support Alpine, or targeting a numbered ARM architecture version.
These prebuilds can be bundled in addition to generic prebuilds; node-gyp-build will try to find the most specific flavor first. Prebuild filenames are composed of tags. The runtime tag takes precedence, as does an abi tag over napi. For more details on tags, please see prebuildifyprebuildify.
Values for the libc and armv tags are auto-detected but can be overridden through the LIBC and ARM_VERSION environment variables, respectively.