codekingpro/portable-devtools

1const { log } = require('proc-log')
2const { resolve, dirname, delimiter } = require('path')
3// the path here is relative, even though it does not need to be
4// in order to make the posix tests pass in windows
5const nodeGypPath = resolve(__dirname, '../lib/node-gyp-bin')
6
7// Windows typically calls its PATH environ 'Path', but this is not
8// guaranteed, nor is it guaranteed to be the only one.  Merge them
9// all together in the order they appear in the object.
10const setPATH = (projectPath, binPaths, env) => {
11  const PATH = Object.keys(env).filter(p => /^path$/i.test(p) && env[p])
12    .map(p => env[p].split(delimiter))
13    .reduce((set, p) => set.concat(p.filter(concatted => !set.includes(concatted))), [])
14    .join(delimiter)
15
16  const pathArr = []
17  if (binPaths) {
18    for (const bin of binPaths) {
19      if (bin.includes(delimiter)) {
20        const event = env.npm_lifecycle_event
21        const context = event ? `"${event}" script` : 'script execution'
22        log.warn('run-script', `Path contains delimiter ("${delimiter}"), ${context} may not behave as expected.`)
23      }
24    }
25    pathArr.push(...binPaths)
26  }
27  // unshift the ./node_modules/.bin from every folder
28  // walk up until dirname() does nothing, at the root
29  // XXX we should specify a cwd that we don't go above
30  let p = projectPath
31  let pp
32  do {
33    pathArr.push(resolve(p, 'node_modules', '.bin'))
34    pp = p
35    p = dirname(p)
36  } while (p !== pp)
37  pathArr.push(nodeGypPath, PATH)
38
39  const pathVal = pathArr.join(delimiter)
40
41  // XXX include the node-gyp-bin path somehow?  Probably better for
42  // npm or arborist or whoever to just provide that by putting it in
43  // the PATH environ, since that's preserved anyway.
44  for (const key of Object.keys(env)) {
45    if (/^path$/i.test(key)) {
46      env[key] = pathVal
47    }
48  }
49
50  return env
51}
52
53module.exports = setPATH
54