Bigify

bigify.js

#!/usr/bin/env node

charactermap = new Proxy({
  ' ': 'blank',
  '?': 'question',
  '!': 'exclamation'
}, {
  get: (object, key) =>
    key in object
      ? object[key]
      : `b${key.toLowerCase()}`
  }
)

bigify = letters =>
  Array.from(letters).map(letter => `:${charactermap[letter]}:`).join('')

letters = process.argv.slice(2).join(' ')

console.log(bigify(letters))

package.json

{
  "name": "bigify",
  "version": "1.1.0",
  "bin": "./bigify.js"
}