Code coverage report for tar/lib/update.js

# All files / tar/lib update.js

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100% Branches 15/15
100% Functions 4/4
100% Lines 20/20

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     'use strict'

    // tar -u

    const hlo = require('./high-level-opt.js')
    const r = require('./replace.js')
    // just call tar.r with the filter and mtimeCache

    const u = module.exports = (opt_, files, cb) => {
      const opt = hlo(opt_)

      if (!opt.file)
        throw new TypeError('file is required')

      if (opt.gzip)
        throw new TypeError('cannot append to compressed archives')

      if (!files || !Array.isArray(files) || !files.length)
        throw new TypeError('no files or directories specified')

      files = Array.from(files)

      mtimeFilter(opt)
      return r(opt, files, cb)
    }

    const mtimeFilter = opt => {
      const filter = opt.filter

      if (!opt.mtimeCache)
        opt.mtimeCache = new Map()

      opt.filter = filter ? (path, stat) =>
        filter(path, stat) && !(opt.mtimeCache.get(path) > stat.mtime)
        : (path, stat) => !(opt.mtimeCache.get(path) > stat.mtime)
    }