Method missingArgsFromTree

lib/commands/link.js:172–202

(tree, args)

  // Returns a list of items that can't be fulfilled by things found in the current arborist inventory
  missingArgsFromTree (tree, args) {
    if (tree.isLink) {
      return this.missingArgsFromTree(tree.target, args)
    }

    const foundNodes = []
    const missing = args.filter(a => {
      const arg = npa(a)
      const nodes = tree.children.values()
      const argFound = [...nodes].every(node => {
        // TODO: write tests for unmatching version specs
        // this is hard to test atm but should be simple once we have a mocked registry again
        if (arg.name !== node.name /* istanbul ignore next */ || (
          arg.version &&
          /* istanbul ignore next */
          !semver.satisfies(node.version, arg.version)
        )) {
          foundNodes.push(node)
          return true
        }
      })
      return argFound
    })

    // remote nodes from the loaded tree in order to avoid dropping them later when reifying
    for (const node of foundNodes) {
      node.parent = null
    }

    return missing
  }
}

module.exports = Link