feat: add Disable Prerelease Identifier Base for creating prerelease intentifiers without appending .0

Author: lsvalina

README.md

@@ -253,6 +253,29 @@ $ semver 1.2.3 -i prerelease --preid beta -n 1
 1.2.4-beta.1
 ```
 
+#### Disable Prerelease Identifier Base
+when this flag is set to true initial prerelease identifier base is disabled.
+
+```javascript
+semver.inc('1.2.3', 'prerelease', { disableIdentifierBase: true } , 'beta')
+// '1.2.4-beta'
+```
+
+command-line example:
+```bash
+$ semver 1.2.3 -i prerelease --preid beta -noidbase
+# 1.2.4-beta
+```
+
+
+if another version is created with same identifier then the prerelease
+number is used based on Prerelease Identifier Base
+
+```javascript
+semver.inc('1.2.3-beta', 'prerelease', { disableIdentifierBase: true } , 'beta', '1')
+// '1.2.3-beta.1'
+```
+
 ### Advanced Range Syntax
 
 Advanced range syntax desugars to primitive comparators in

bin/semver.js

@@ -25,6 +25,8 @@ let identifier
 
 let identifierBase
 
+let disableIdentifierBase
+
 const semver = require('../')
 const parseOptions = require('../internal/parse-options')
 
@@ -77,6 +79,9 @@ const main = () => {
       case '-n':
         identifierBase = argv.shift()
         break
+      case '--noidbase':
+        disableIdentifierBase = true
+        break
       case '-c': case '--coerce':
         coerce = true
         break
@@ -94,7 +99,7 @@ const main = () => {
     }
   }
 
-  options = parseOptions({ loose, includePrerelease, rtl })
+  options = parseOptions({ loose, includePrerelease, rtl, disableIdentifierBase })
 
   versions = versions.map((v) => {
     return coerce ? (semver.coerce(v, options) || { version: v }).version : v
@@ -178,6 +183,19 @@ Options:
 --ltr
         Coerce version strings left to right (default)
 
+-n <base>
+        Prerelease Identifier Base
+        that will let you let your prerelease number as 
+        zero-based or one-based.If you do not specify 
+        this parameter, it will default to zero-based.
+        
+--noidbase
+        Disable Identifier Base
+        when this flag is set to true initial prerelease
+        identifier base is disabled, if another version
+        is created with same identifier then the prerelease
+        number is used based on Prerelease Identifier Base
+
 Program exits successfully if any valid version satisfies
 all supplied ranges, and prints all satisfying versions.
 

classes/semver.js

@@ -246,9 +246,10 @@ class SemVer {
         break
       // This probably shouldn't be used publicly.
       // 1.0.0 'pre' would become 1.0.0-0 which is the wrong direction.
-      case 'pre':
+      case 'pre': {
+        const base = Number(identifierBase) ? 1 : 0
         if (this.prerelease.length === 0) {
-          this.prerelease = [0]
+          this.prerelease = [base]
         } else {
           let i = this.prerelease.length
           while (--i >= 0) {
@@ -259,23 +260,31 @@ class SemVer {
           }
           if (i === -1) {
             // didn't increment anything
-            this.prerelease.push(0)
+            this.prerelease.push(base)
           }
         }
         if (identifier) {
-          const base = Number(identifierBase) ? 1 : 0
           // 1.2.0-beta.1 bumps to 1.2.0-beta.2,
           // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0
           if (compareIdentifiers(this.prerelease[0], identifier) === 0) {
             if (isNaN(this.prerelease[1])) {
-              this.prerelease = [identifier, base]
+              if (this.options.disableIdentifierBase) {
+                this.prerelease = [identifier]
+              } else {
+                this.prerelease = [identifier, base]
+              }
             }
           } else {
             this.prerelease = [identifier, base]
+            if (this.options.disableIdentifierBase) {
+              this.prerelease = [identifier]
+            } else {
+              this.prerelease = [identifier, base]
+            }
           }
         }
         break
-
+      }
       default:
         throw new Error(`invalid increment argument: ${release}`)
     }

tap-snapshots/test/bin/semver.js.test.cjs

@@ -93,6 +93,19 @@ Object {
     --ltr
             Coerce version strings left to right (default)
     
+    -n <base>
+            Prerelease Identifier Base
+            that will let you let your prerelease number as 
+            zero-based or one-based.If you do not specify 
+            this parameter, it will default to zero-based.
+            
+    --noidbase
+            Disable Identifier Base
+            when this flag is set to true initial prerelease
+            identifier base is disabled, if another version
+            is created with same identifier then the prerelease
+            number is used based on Prerelease Identifier Base
+    
     Program exits successfully if any valid version satisfies
     all supplied ranges, and prints all satisfying versions.
     
@@ -149,6 +162,19 @@ Object {
     --ltr
             Coerce version strings left to right (default)
     
+    -n <base>
+            Prerelease Identifier Base
+            that will let you let your prerelease number as 
+            zero-based or one-based.If you do not specify 
+            this parameter, it will default to zero-based.
+            
+    --noidbase
+            Disable Identifier Base
+            when this flag is set to true initial prerelease
+            identifier base is disabled, if another version
+            is created with same identifier then the prerelease
+            number is used based on Prerelease Identifier Base
+    
     Program exits successfully if any valid version satisfies
     all supplied ranges, and prints all satisfying versions.
     
@@ -205,6 +231,19 @@ Object {
     --ltr
             Coerce version strings left to right (default)
     
+    -n <base>
+            Prerelease Identifier Base
+            that will let you let your prerelease number as 
+            zero-based or one-based.If you do not specify 
+            this parameter, it will default to zero-based.
+            
+    --noidbase
+            Disable Identifier Base
+            when this flag is set to true initial prerelease
+            identifier base is disabled, if another version
+            is created with same identifier then the prerelease
+            number is used based on Prerelease Identifier Base
+    
     Program exits successfully if any valid version satisfies
     all supplied ranges, and prints all satisfying versions.
     
@@ -261,6 +300,19 @@ Object {
     --ltr
             Coerce version strings left to right (default)
     
+    -n <base>
+            Prerelease Identifier Base
+            that will let you let your prerelease number as 
+            zero-based or one-based.If you do not specify 
+            this parameter, it will default to zero-based.
+            
+    --noidbase
+            Disable Identifier Base
+            when this flag is set to true initial prerelease
+            identifier base is disabled, if another version
+            is created with same identifier then the prerelease
+            number is used based on Prerelease Identifier Base
+    
     Program exits successfully if any valid version satisfies
     all supplied ranges, and prints all satisfying versions.
     
@@ -310,6 +362,15 @@ Object {
 }
 `
 
+exports[`test/bin/semver.js TAP inc tests > -i premajor 1.0.0 --preid=beta --noidbase 1`] = `
+Object {
+  "code": 0,
+  "err": "",
+  "out": "2.0.0-beta\\n",
+  "signal": null,
+}
+`
+
 exports[`test/bin/semver.js TAP inc tests > -i premajor 1.0.0 --preid=beta 1`] = `
 Object {
   "code": 0,

test/bin/semver.js

@@ -28,8 +28,8 @@ const run = args => new Promise((resolve, reject) => {
 t.test('inc tests', t => Promise.all([
   ['-i', 'major', '1.0.0'],
   ['-i', 'major', '1.0.0', '1.0.1'],
-  ['-i', 'premajor', '1.0.0', '--preid=beta'],
   ['-i', 'premajor', '1.0.0', '--preid=beta', '-n', '1'],
+  ['-i', 'premajor', '1.0.0', '--preid=beta', '--noidbase'],
   ['-i', '1.2.3'],
 ].map(args => t.resolveMatchSnapshot(run(args), args.join(' ')))))
 

test/fixtures/increments.js

@@ -101,4 +101,21 @@ module.exports = [
   ['1.2.3-dev.bar', 'prerelease', '1.2.3-dev.0', false, 'dev', '0'],
   ['1.2.0', 'preminor', '1.3.0-dev.1', false, 'dev', '1'],
   ['1.2.3-1', 'preminor', '1.3.0-dev.0', false, 'dev'],
+
+  // disableIdentifierBase
+  ['1.2.0-1', 'prerelease', '1.2.0-alpha', { disableIdentifierBase: true }, 'alpha', '0'],
+  ['1.2.1', 'prerelease', '1.2.2-alpha', { disableIdentifierBase: true }, 'alpha', '0'],
+  ['1.2.2', 'prerelease', '1.2.3-alpha', { disableIdentifierBase: true }, 'alpha', '1'],
+  ['1.2.0', 'prepatch', '1.2.1-dev', { disableIdentifierBase: true }, 'dev', '1'],
+  ['1.2.0-1', 'prepatch', '1.2.1-dev', { disableIdentifierBase: true }, 'dev', '1'],
+  ['1.2.0', 'premajor', '2.0.0-dev', { disableIdentifierBase: true }, 'dev', '0'],
+  ['1.2.3-1', 'premajor', '2.0.0-dev', { disableIdentifierBase: true }, 'dev', '0'],
+  ['1.2.3-dev.bar', 'prerelease', '1.2.3-dev', { disableIdentifierBase: true }, 'dev', '0'],
+  ['1.2.0', 'preminor', '1.3.0-dev', { disableIdentifierBase: true }, 'dev', '1'],
+  ['1.2.3-1', 'preminor', '1.3.0-dev', { disableIdentifierBase: true }, 'dev'],
+  ['1.2.3-dev', 'prerelease', '1.2.3-dev.0', { disableIdentifierBase: true }, 'dev', '0'],
+  ['1.2.3-dev', 'prerelease', '1.2.3-dev.1', { disableIdentifierBase: true }, 'dev', '1'],
+  ['1.2.0-dev', 'premajor', '2.0.0-dev', { disableIdentifierBase: true }, 'dev', '0'],
+  ['1.2.0-dev', 'preminor', '1.3.0-beta', { disableIdentifierBase: true }, 'beta', '1'],
+  ['1.2.0-dev', 'prepatch', '1.2.1-dev', { disableIdentifierBase: true }, 'dev', '1'],
 ]

test/internal/parse-options.js

@@ -35,9 +35,13 @@ t.test('any object passed is returned', t => {
     loose: true,
     includePrerelease: true,
   })
-  t.strictSame(parseOptions({ rtl: true, includePrerelease: true }), {
+  t.strictSame(parseOptions({ disableIdentifierBase: true }), {
+    disableIdentifierBase: true,
+  })
+  t.strictSame(parseOptions({ rtl: true, includePrerelease: true, disableIdentifierBase: true }), {
     rtl: true,
     includePrerelease: true,
+    disableIdentifierBase: true,
   })
   t.end()
 })