test(csv-issues-cjs): fix stdout maxBuffer length exceeded

demo/issues-cjs/test/samples.coffee

@@ -1,7 +1,7 @@
 
-fs = require 'fs'
-path = require 'path'
-{ exec } = require 'child_process'
+fs = require 'node:fs'
+path = require 'node:path'
+{ spawn } = require 'node:child_process'
 
 dir = path.resolve __dirname, '../lib'
 samples = fs.readdirSync dir
@@ -14,10 +14,11 @@ describe 'Samples', ->
   .map (sample) ->
     it "Sample #{sample}", (callback) ->
       ext = /\.(\w+)?$/.exec(sample)[0]
-      bin = switch ext
+      cmd = switch ext
         when '.js'
           'node'
         when '.ts'
           'ts-node' # Also works with:  `node --loader ts-node/esm`
-      exec "#{bin} #{path.resolve dir, sample}", (err) ->
-        callback err
+      spawn(cmd, [path.resolve dir, sample])
+        .on 'close', (code) -> callback(code isnt 0 and new Error 'Failure')
+        .stdout.on 'data', (->)