docs: cjs demo with node > 12 ts import

Author: wdavidw

demo/cjs/README.md

@@ -2,3 +2,7 @@
 # Node.js CSV demo for CommonJS
 
 The package exposes a few JavaScript and TypeScript examples to import the CSV parser using the CommonJS module loader.
+
+## Testing
+
+For Node.js 12 and above, run `yarn test`. For versions below 12 and above 8, run `./test/node8.sh`.

demo/cjs/lib/csv_sync.ts

@@ -1,9 +1,9 @@
 
 // Import the package sync module
 // Node.js >= 14
-// import * as csv from 'csv/sync';
+import * as csv from 'csv/sync';
 // Node.js < 14
-import * as csv from 'csv/dist/cjs/sync';
+// import * as csv from 'csv/dist/cjs/sync';
 
 // Generate 20 records
 const input: string = csv.generate({

demo/cjs/lib/parse_sync.ts

@@ -1,9 +1,9 @@
 
 import assert from 'assert'
 // Node.js >= 14
-// import { parse } from 'csv-parse/sync'
+import { parse } from 'csv-parse/sync'
 // Node.js < 14
-import { parse } from 'csv-parse/dist/cjs/sync'
+// import { parse } from 'csv-parse/dist/cjs/sync'
 
 // Create the parser
 const records: [] = parse([