react-starter-kit-cli-cars/lib/text-transforms/index.js

cli companion to react-starter-kit

const DELIMITERS = ['-', '_', ' ']

function isUpperCase(c) {
  return c === c.toUpperCase()
}

function isLowerCase(c) {
  return c === c.toLowerCase()
}

export default {

  commandsFromTemplate(input, match) {
    let str = match.replace('%', '')
    str = str.replace('[', '')
    str = str.replace(']', '')
    let commands = str.split('|')
    commands = commands.slice(1, commands.length)

    commands.forEach(command => {
      if (!this[command]) return
      input = this[command](input)
    })
    return input
  },

  capitalize(str) {
    return str[0].toUpperCase() + str.slice(1, str.length)
  },

  camelCase(str) {
    let newStr = ''
    for (let i = 0; i < str.length; i++) {
      const char = str[i]

      if (~DELIMITERS.indexOf(char)) {
        newStr += str[++i].toUpperCase()
        continue
      }
      newStr += char
    }
    return newStr
  },

  snakeCase(str) {
    let newStr = ''
    const delimiter = '-'

    for (let i = 0; i < str.length; i++) {
      const char = str[i]

      if (char === delimiter) {
        newStr += char
        continue
      }

      if (isUpperCase(char)) {
        newStr += delimiter
      }

      newStr += char.toLowerCase()
    }
    return newStr
  },

  camelCaseTo(str, seperator) {
    let newStr = ''
    for (let i = 0; i < str.length; i++) {
      const char = str[i]

      if (char === seperator) {
        newStr += char
        continue
      }

      if (isUpperCase(char)) {
        newStr += seperator
      }

      newStr += char
    }
    return newStr.toLowerCase()
  },

}