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1'use strict'
2
3var vendors = require('./vendors.json')
4
5var env = process.env
6
7// Used for testing only
8Object.defineProperty(exports, '_vendors', {
9  value: vendors.map(function (v) { return v.constant })
10})
11
12exports.name = null
13exports.isPR = null
14
15vendors.forEach(function (vendor) {
16  var envs = Array.isArray(vendor.env) ? vendor.env : [vendor.env]
17  var isCI = envs.every(function (obj) {
18    return checkEnv(obj)
19  })
20
21  exports[vendor.constant] = isCI
22
23  if (isCI) {
24    exports.name = vendor.name
25
26    switch (typeof vendor.pr) {
27      case 'string':
28        // "pr": "CIRRUS_PR"
29        exports.isPR = !!env[vendor.pr]
30        break
31      case 'object':
32        if ('env' in vendor.pr) {
33          // "pr": { "env": "BUILDKITE_PULL_REQUEST", "ne": "false" }
34          exports.isPR = vendor.pr.env in env && env[vendor.pr.env] !== vendor.pr.ne
35        } else if ('any' in vendor.pr) {
36          // "pr": { "any": ["ghprbPullId", "CHANGE_ID"] }
37          exports.isPR = vendor.pr.any.some(function (key) {
38            return !!env[key]
39          })
40        } else {
41          // "pr": { "DRONE_BUILD_EVENT": "pull_request" }
42          exports.isPR = checkEnv(vendor.pr)
43        }
44        break
45      default:
46        // PR detection not supported for this vendor
47        exports.isPR = null
48    }
49  }
50})
51
52exports.isCI = !!(
53  env.CI || // Travis CI, CircleCI, Cirrus CI, Gitlab CI, Appveyor, CodeShip, dsari
54  env.CONTINUOUS_INTEGRATION || // Travis CI, Cirrus CI
55  env.BUILD_NUMBER || // Jenkins, TeamCity
56  env.RUN_ID || // TaskCluster, dsari
57  exports.name ||
58  false
59)
60
61function checkEnv (obj) {
62  if (typeof obj === 'string') return !!env[obj]
63  return Object.keys(obj).every(function (k) {
64    return env[k] === obj[k]
65  })
66}
67