perf(benchmark): add benchmark.js to validate the performance against…

… other libs

benchmark.js

@@ -0,0 +1,29 @@
+const { bahttext } = require('./src')
+const THBText = require('thai-baht-text')
+const { ThaiBaht } = require('thai-baht-text-ts')
+const { convert } = require('baht')
+
+const allTestcases = require('./misc/testcases.json')
+const nTestCases = allTestcases.length
+const testcases = allTestcases.slice(0, nTestCases)
+const numbers = testcases.map(item => parseFloat(item.number))
+const nIterations = 10000
+
+const testedLib = {
+  bahttext: n => bahttext(n),
+  baht: n => convert(n),
+  'thai-baht-text': n => THBText(n),
+  'thai-baht-text-ts': n => ThaiBaht(n)
+}
+
+Object.entries(testedLib).forEach(([name, fn]) => {
+  const start = new Date()
+
+  new Array(nIterations).fill(0).forEach(_ => {
+    numbers.forEach(number => fn(number))
+  })
+
+  const end = new Date()
+  const elapsed = end - start
+  console.log(`${name}: elapsed: ${elapsed} ms, start: ${start.toISOString()}, end: ${end.toISOString()}`)
+})