extract bindings

lib/load-bindings.ts

@@ -1,9 +1,5 @@
-import nodeGypBuild from 'node-gyp-build'
 import { promisify } from 'util'
-import { join } from 'path'
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-const binding = nodeGypBuild(join(__dirname, '../')) as any
+import { binding } from './serialport-bindings'
 
 export const asyncClose = binding.close ? promisify(binding.close) : async () => { throw new Error('"binding.close" Method not implemented')}
 export const asyncDrain = binding.drain ? promisify(binding.drain) : async () => { throw new Error('"binding.drain" Method not implemented')}

lib/poller.ts

@@ -1,10 +1,9 @@
 import debug from 'debug'
 import { EventEmitter } from 'events'
-import { join } from 'path'
-import nodeGypBuild from 'node-gyp-build'
 import { BindingsError } from './errors'
+import { binding } from './serialport-bindings'
 
-const { Poller: PollerBindings } = nodeGypBuild(join(__dirname, '../')) as { Poller: PollerClass }
+const { Poller: PollerBindings } = binding as { Poller: PollerClass }
 const logger = debug('serialport/bindings-cpp/poller')
 
 interface PollerClass {

lib/serialport-bindings.ts

@@ -0,0 +1,5 @@
+import { join } from 'path'
+import nodeGypBuild from 'node-gyp-build'
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export const binding = nodeGypBuild(join(__dirname, '../')) as any