Initial commit

themes/keepit/node_modules/stream-transform/samples/state.instance.js

@@ -0,0 +1,19 @@
+
+const transform = require('..')
+// Generate a dataset of 5 records
+const records = 'record\n'.repeat(5).trim().split('\n')
+// Initialize the transformation
+const transformer = transform(records, (record, callback) => {
+  setTimeout( () => {
+    const {running, started, finished} = transformer
+    callback(null, `${running}_${started}_${finished}\n`)
+  }, 100)
+})
+// Get notify when done
+transformer.on('end', () => {
+  process.stdout.write('-------\n')
+  const {running, started, finished} = transformer
+  process.stdout.write(`${running}_${started}_${finished}\n`)
+})
+// Print the transformed records to the standard output
+transformer.pipe(process.stdout)