@lamantin/fastpush/src/utils/increment/incrementPackageJson.ts

Typed fastlane frontend for pushing builds to store

import { IncrementType } from '../../cli/IncrementType'
import { assertVersion, Version } from '../../cli/utils'
import { Incrementer } from './Incrementer'
import { readVersionFrom, saveVersionTo } from './readVersion'
import jetpack = require('fs-jetpack')

/**
 * Increment version in packageJson and return array with [oldVersion, newVersion]
 */
export async function incrementPackageJson(
  type: IncrementType,
  packageJsonPath: string = jetpack.cwd() + '/package.json',
): Promise<[Version, Version]> {
  const version = await readVersionFrom(packageJsonPath)
  const currentVersion = await assertVersion(version)
  const newVersion = Incrementer.increment(currentVersion, type)
  return saveVersionTo(packageJsonPath, newVersion)
}