@eluvio/elv-js-helpers/bin/buildMain.js

A collection of Javascript helper functions used by several Eluvio libraries.

// builds (or rebuilds) the main.js file
const fs = require('fs')
const path = require('path')

const {jsFileBasenamesList, SRC_DIR, subdirNameList} = require('./dirUtils')

// recursive
const codeBlocksAndFileList = (startingPath, currentPath) => {
  const currentDirName = path.basename(currentPath)
  let codeBlocks = []
  let fileList = []
  const subDirs = subdirNameList(currentPath)
  for (const subDir of subDirs) {
    let [subCodeBlocks, subFileList] = codeBlocksAndFileList(startingPath, path.join(currentPath, subDir))
    codeBlocks = codeBlocks.concat(subCodeBlocks)
    fileList = fileList.concat(subFileList)
  }

  const jsFiles = jsFileBasenamesList(currentPath).filter(x => x !== 'main')
  for (const jsFile of jsFiles) {
    const filePath = path.join(currentPath, jsFile).replace(startingPath, '.')
    fileList.push(filePath)
  }

  codeBlocks.push(
    startingPath === currentPath ?
      'module.exports = {' :
      `const ${currentDirName} = {`
  )
  const kvList = []
  for (const subDir of subDirs) {
    kvList.push(`  ${subDir}`)
  }

  for (const jsFile of jsFiles) {
    const filePath = path.join(currentPath, jsFile).replace(startingPath, '.')
    kvList.push(`  ${jsFile}: require('${filePath}')`)
  }
  codeBlocks.push(kvList.join(',\n'))
  codeBlocks.push('}\n')
  return [codeBlocks, fileList]
}

const [codeBlocks] = codeBlocksAndFileList(SRC_DIR, SRC_DIR)

const fileContents = '// This file is auto-generated by ./bin/buildMain.js\n\n\'use strict\'\n' + codeBlocks.join('\n')

fs.writeFileSync(path.join(SRC_DIR, 'main.js'), fileContents)