improve regex

Author: mfbx9da4

package.json

@@ -20,9 +20,11 @@
   },
   "dependencies": {
     "@types/mailcheck": "^1.1.31",
+    "@types/validator": "^12.0.1",
     "axios": "^0.19.2",
     "lodash": "^4.17.15",
-    "mailcheck": "^1.1.1"
+    "mailcheck": "^1.1.1",
+    "validator": "^12.2.0"
   },
   "devDependencies": {
     "@types/eslint": "^6.1.1",

src/disposable/disposable.ts

@@ -33,5 +33,6 @@ export const checkDisposable = async (
   domain: string
 ): Promise<string | undefined> => {
   if (disposableDomains.size === 0) await loadDisposableDomains()
-  if (disposableDomains.has(domain)) return 'Is disposable email'
+  if (disposableDomains.has(domain))
+    return 'Email was created using a disposable email service'
 }

src/index.ts

@@ -1,3 +1,4 @@
+import isEmail from 'validator/lib/isEmail'
 import { OutputFormat, createOutput } from './output/output'
 import { checkTypo } from './typo/typo'
 import { getBestMx } from './dns/dns'
@@ -15,26 +16,18 @@ export async function validate(
   recipient: string,
   sender: string = '[email protected]'
 ): Promise<OutputFormat> {
-  if (!/^\S+@\S+$/.test(recipient)) {
-    return createOutput('regex')
-  }
+  if (!isEmail(recipient)) return createOutput('regex')
 
   const typoResponse = await checkTypo(recipient)
-  if (typoResponse) {
-    return createOutput('typo', typoResponse)
-  }
+  if (typoResponse) return createOutput('typo', typoResponse)
 
   const domain = recipient.split('@')[1]
 
   const disposableResponse = await checkDisposable(domain)
-  if (disposableResponse) {
-    return createOutput('disposable', disposableResponse)
-  }
+  if (disposableResponse) return createOutput('disposable', disposableResponse)
 
   const mx = await getBestMx(domain)
-  if (!mx) {
-    return createOutput('mx', 'MX record not found')
-  }
+  if (!mx) return createOutput('mx', 'MX record not found')
 
   return checkSMTP(sender, recipient, mx.exchange)
 }

src/output/output.ts

@@ -10,7 +10,6 @@ const NullOutputFormat = {
     typo: { valid: true } as ValidatorOutput,
     disposable: { valid: true } as ValidatorOutput,
     mx: { valid: true } as ValidatorOutput,
-    dns: { valid: true } as ValidatorOutput,
     smtp: { valid: true } as ValidatorOutput,
   },
 }