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User : www-data

Name	Size	Permission	Date
clean.js	191 B	-rw-r--r--	2023-08-13 05:13
cmp.js	947 B	-rw-r--r--	2023-08-13 05:13
coerce.js	1.48 KB	-rw-r--r--	2023-08-13 05:13
compare-build.js	267 B	-rw-r--r--	2023-08-13 05:13
compare-loose.js	118 B	-rw-r--r--	2023-08-13 05:13
compare.js	156 B	-rw-r--r--	2023-08-13 05:13
diff.js	1.57 KB	-rw-r--r--	2023-08-13 05:13
eq.js	112 B	-rw-r--r--	2023-08-13 05:13
gt.js	110 B	-rw-r--r--	2023-08-13 05:13
gte.js	113 B	-rw-r--r--	2023-08-13 05:13
inc.js	464 B	-rw-r--r--	2023-08-13 05:13
lt.js	110 B	-rw-r--r--	2023-08-13 05:13
lte.js	113 B	-rw-r--r--	2023-08-13 05:13
major.js	122 B	-rw-r--r--	2023-08-13 05:13
minor.js	122 B	-rw-r--r--	2023-08-13 05:13
neq.js	114 B	-rw-r--r--	2023-08-13 05:13
parse.js	317 B	-rw-r--r--	2023-08-13 05:13
patch.js	122 B	-rw-r--r--	2023-08-13 05:13
prerelease.js	220 B	-rw-r--r--	2023-08-13 05:13
rcompare.js	118 B	-rw-r--r--	2023-08-13 05:13
rsort.js	149 B	-rw-r--r--	2023-08-13 05:13
satisfies.js	233 B	-rw-r--r--	2023-08-13 05:13
sort.js	147 B	-rw-r--r--	2023-08-13 05:13
valid.js	162 B	-rw-r--r--	2023-08-13 05:13

Rename

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
  const lowHasPre = !!lowVersion.prerelease.length

if (lowHasPre && !highHasPre) {
    // Going from prerelease -> no prerelease requires some special casing

// If the low version has only a major, then it will always be a major
    // Some examples:
    // 1.0.0-1 -> 1.0.0
    // 1.0.0-1 -> 1.1.1
    // 1.0.0-1 -> 2.0.0
    if (!lowVersion.patch && !lowVersion.minor) {
      return 'major'
    }

// Otherwise it can be determined by checking the high version

if (highVersion.patch) {
      // anything higher than a patch bump would result in the wrong version
      return 'patch'
    }

if (highVersion.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'
  }

// 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'
  }

// high and low are preleases
  return 'prerelease'
}

module.exports = diff