blob: fafc11c40d34546ae92fa91430047aaea6322fa1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
const parse = require('./parse.js')
const diff = (version1, version2) => {
const v1 = parse(version1, null, true)
const v2 = parse(version2, null, true)
const comparison = v1.compare(v2)
if (comparison === 0) {
return null
}
const v1Higher = comparison > 0
const highVersion = v1Higher ? v1 : v2
const lowVersion = v1Higher ? v2 : v1
const highHasPre = !!highVersion.prerelease.length
// add the `pre` prefix if we are going to a prerelease version
const prefix = highHasPre ? 'pre' : ''
if (v1.major !== v2.major) {
return prefix + 'major'
}
if (v1.minor !== v2.minor) {
return prefix + 'minor'
}
if (v1.patch !== v2.patch) {
return prefix + 'patch'
}
// at this point we know stable versions match but overall versions are not equal,
// so either they are both prereleases, or the lower version is a prerelease
if (highHasPre) {
// high and low are preleases
return 'prerelease'
}
if (lowVersion.patch) {
// anything higher than a patch bump would result in the wrong version
return 'patch'
}
if (lowVersion.minor) {
// anything higher than a minor bump would result in the wrong version
return 'minor'
}
// bumping major/minor/patch all have same result
return 'major'
}
module.exports = diff
|
