From 1bd5bdd9aba7be6e1aa90728faf135b4ed425880 Mon Sep 17 00:00:00 2001
From: isaacs <i@izs.me>
Date: Mon, 13 Apr 2020 11:11:33 -0700
Subject: [PATCH] fix: Handle prereleases properly in 'X - Y' ranges

If includePrerelease is set, then you'd expect 1.0.0-pre and 2.0.0-pre
to be included in the range '1.0.0 - 2.0.0'.  You would NOT expect that
3.0.0-pre would be included in that range.

To accomplish this, the bounds of the range have to be set differently,
using the '-0' minimum prerelease version identifier, to include and
exclude prereleases appropriately when includePrerelease is set.
---
 classes/range.js               | 18 +++++++++++-------
 test/fixtures/range-exclude.js |  5 +++++
 test/fixtures/range-include.js |  3 +++
 test/fixtures/range-parse.js   |  5 +++++
 4 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/classes/range.js b/classes/range.js
index 76d5e67b..51125a01 100644
--- a/classes/range.js
+++ b/classes/range.js
@@ -68,7 +68,7 @@ class Range {
     range = range.trim()
     // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4`
     const hr = loose ? re[t.HYPHENRANGELOOSE] : re[t.HYPHENRANGE]
-    range = range.replace(hr, hyphenReplace)
+    range = range.replace(hr, hyphenReplace(this.options.includePrerelease))
     debug('hyphen replace', range)
     // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5`
     range = range.replace(re[t.COMPARATORTRIM], comparatorTrimReplace)
@@ -384,27 +384,31 @@ const replaceStars = (comp, options) => {
 // 1.2 - 3.4.5 => >=1.2.0 <=3.4.5
 // 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do
 // 1.2 - 3.4 => >=1.2.0 <3.5.0
-const hyphenReplace = ($0,
+const hyphenReplace = incPr => ($0,
   from, fM, fm, fp, fpr, fb,
   to, tM, tm, tp, tpr, tb) => {
   if (isX(fM)) {
     from = ''
   } else if (isX(fm)) {
-    from = `>=${fM}.0.0`
+    from = `>=${fM}.0.0${incPr ? '-0' : ''}`
   } else if (isX(fp)) {
-    from = `>=${fM}.${fm}.0`
-  } else {
+    from = `>=${fM}.${fm}.0${incPr ? '-0' : ''}`
+  } else if (fpr) {
     from = `>=${from}`
+  } else {
+    from = `>=${from}${incPr ? '-0' : ''}`
   }
 
   if (isX(tM)) {
     to = ''
   } else if (isX(tm)) {
-    to = `<${+tM + 1}.0.0`
+    to = `<${+tM + 1}.0.0${incPr ? '-0' : ''}`
   } else if (isX(tp)) {
-    to = `<${tM}.${+tm + 1}.0`
+    to = `<${tM}.${+tm + 1}.0${incPr ? '-0' : ''}`
   } else if (tpr) {
     to = `<=${tM}.${tm}.${tp}-${tpr}`
+  } else if (incPr) {
+    to = `<${tM}.${tm}.${+tp + 1}-0`
   } else {
     to = `<=${to}`
   }
diff --git a/test/fixtures/range-exclude.js b/test/fixtures/range-exclude.js
index 47c36406..209f93a0 100644
--- a/test/fixtures/range-exclude.js
+++ b/test/fixtures/range-exclude.js
@@ -80,4 +80,9 @@ module.exports = [
   ['^1.2.3-rc2', '2.0.0', { includePrerelease: true }],
   ['^1.0.0', '2.0.0-rc1', { includePrerelease: true }],
   ['^1.0.0', '2.0.0-rc1'],
+
+  ['1 - 2', '3.0.0-pre', { includePrerelease: true }],
+  ['1 - 2', '2.0.0-pre'],
+  ['1 - 2', '1.0.0-pre'],
+  ['1.0 - 2', '1.0.0-pre'],
 ]
diff --git a/test/fixtures/range-include.js b/test/fixtures/range-include.js
index 1319c001..07be3657 100644
--- a/test/fixtures/range-include.js
+++ b/test/fixtures/range-include.js
@@ -114,4 +114,7 @@ module.exports = [
   ['^1.0.0-rc2', '1.0.1-rc1', { includePrerelease: true }],
   ['^1.0.0', '1.0.1-rc1', { includePrerelease: true }],
   ['^1.0.0', '1.1.0-rc1', { includePrerelease: true }],
+  ['1 - 2', '2.0.0-pre', { includePrerelease: true }],
+  ['1 - 2', '1.0.0-pre', { includePrerelease: true }],
+  ['1.0 - 2', '1.0.0-pre', { includePrerelease: true }],
 ]
diff --git a/test/fixtures/range-parse.js b/test/fixtures/range-parse.js
index a09c1f7d..65744c4b 100644
--- a/test/fixtures/range-parse.js
+++ b/test/fixtures/range-parse.js
@@ -4,6 +4,11 @@
 // new Range().range will be '' in those cases
 module.exports = [
   ['1.0.0 - 2.0.0', '>=1.0.0 <=2.0.0'],
+  ['1.0.0 - 2.0.0', '>=1.0.0-0 <2.0.1-0', { includePrerelease: true }],
+  ['1 - 2', '>=1.0.0 <3.0.0'],
+  ['1 - 2', '>=1.0.0-0 <3.0.0-0', { includePrerelease: true }],
+  ['1.0 - 2.0', '>=1.0.0 <2.1.0'],
+  ['1.0 - 2.0', '>=1.0.0-0 <2.1.0-0', { includePrerelease: true }],
   ['1.0.0', '1.0.0', { loose: false }],
   ['>=*', '*'],
   ['', '*'],