Fix behavior for yarn version pre* to match the docs

.yarn/versions/59b2c8b4.yml

@@ -0,0 +1,23 @@
+releases:
+  "@yarnpkg/cli": patch
+  "@yarnpkg/plugin-version": minor
+
+declined:
+  - "@yarnpkg/plugin-compat"
+  - "@yarnpkg/plugin-constraints"
+  - "@yarnpkg/plugin-dlx"
+  - "@yarnpkg/plugin-essentials"
+  - "@yarnpkg/plugin-init"
+  - "@yarnpkg/plugin-interactive-tools"
+  - "@yarnpkg/plugin-nm"
+  - "@yarnpkg/plugin-npm-cli"
+  - "@yarnpkg/plugin-pack"
+  - "@yarnpkg/plugin-patch"
+  - "@yarnpkg/plugin-pnp"
+  - "@yarnpkg/plugin-pnpm"
+  - "@yarnpkg/plugin-stage"
+  - "@yarnpkg/plugin-typescript"
+  - "@yarnpkg/plugin-workspace-tools"
+  - "@yarnpkg/builder"
+  - "@yarnpkg/core"
+  - "@yarnpkg/doctor"

packages/acceptance-tests/pkg-tests-specs/sources/commands/version.test.ts

@@ -5,7 +5,7 @@ describe(`Commands`, () => {
     test(
       `it shouldn't work if the strategy isn't semver and there is no prior version`,
       makeTemporaryEnv({}, async ({path, run, source}) => {
-        await expect(run(`version`, `patch`)).rejects.toThrow();
+        await expect(run(`version`, `patch`)).rejects.toThrow(`Usage Error: Can't bump the version if there wasn't a version to begin with - use 0.0.0 as initial version then run the command again.`);
       }),
     );
 
@@ -15,7 +15,7 @@ describe(`Commands`, () => {
         version: `1.0.0`,
       }, async ({path, run, source}) => {
         await run(`version`, `1.1.0`, `--deferred`);
-        await expect(run(`version`, `1.0.1`)).rejects.toThrow();
+        await expect(run(`version`, `1.0.1`)).rejects.toThrow(`Usage Error: Can't bump the version to one that would be lower than the current deferred one (1.1.0)`);
       }),
     );
 
@@ -25,7 +25,7 @@ describe(`Commands`, () => {
         version: `1.0.0`,
       }, async ({path, run, source}) => {
         await run(`version`, `1.1.0`, `--deferred`);
-        await expect(run(`version`, `patch`)).rejects.toThrow();
+        await expect(run(`version`, `patch`)).rejects.toThrow(`Usage Error: Can't bump the version to one that would be lower than the current deferred one (1.1.0)`);
       }),
     );
 
@@ -99,7 +99,33 @@ describe(`Commands`, () => {
     );
 
     test(
-      `it shouldn't immediatly increase the version number for a workspace when using --deferred`,
+      `it should bump then append a prerelease version number to a release version`,
+      makeTemporaryEnv({
+        version: `1.2.3`,
+      }, async ({path, run, source}) => {
+        await run(`version`, `prerelease`);
+
+        await expect(xfs.readJsonPromise(`${path}/package.json` as PortablePath)).resolves.toMatchObject({
+          version: `1.2.4-0`,
+        });
+      }),
+    );
+
+    test(
+      `it should bump the prerelease version number on a prerelease version`,
+      makeTemporaryEnv({
+        version: `11.22.33-9`,
+      }, async ({path, run, source}) => {
+        await run(`version`, `prerelease`);
+
+        await expect(xfs.readJsonPromise(`${path}/package.json` as PortablePath)).resolves.toMatchObject({
+          version: `11.22.33-10`,
+        });
+      }),
+    );
+
+    test(
+      `it shouldn't immediately increase the version number for a workspace when using --deferred`,
       makeTemporaryEnv({
         version: `0.0.0`,
       }, async ({path, run, source}) => {
@@ -118,7 +144,7 @@ describe(`Commands`, () => {
     );
 
     test(
-      `it shouldn't immediatly increase the version number for a workspace when using preferDeferredVersions`,
+      `it shouldn't immediately increase the version number for a workspace when using preferDeferredVersions`,
       makeTemporaryEnv({
         version: `0.0.0`,
       }, {
@@ -139,7 +165,7 @@ describe(`Commands`, () => {
     );
 
     test(
-      `it should immediatly increase the version number for a workspace when using --immediate, even if preferDeferredVersions is set`,
+      `it should immediately increase the version number for a workspace when using --immediate, even if preferDeferredVersions is set`,
       makeTemporaryEnv({
         version: `0.0.0`,
       }, {

packages/plugin-version/sources/versionUtils.test.ts

@@ -14,4 +14,16 @@ describe(`versionUtils`, () => {
       expect(versionUtils.applyPrerelease(`1.3.0`, {current: `1.2.3-rc.41`, prerelease: `rc.%n`})).toEqual(`1.3.0-rc.1`);
     });
   });
+
+  describe(`applyStrategy`, () => {
+    it(`should increase the prerelease number with prerelease strategy`, () => {
+      expect(versionUtils.applyStrategy(`1.2.3-0`, `prerelease`)).toEqual(`1.2.3-1`);
+    });
+
+    it(`should apply prepatch, preminor, premajor strategies`, () => {
+      expect(versionUtils.applyStrategy(`1.2.3`, `prepatch`)).toEqual(`1.2.4-0`);
+      expect(versionUtils.applyStrategy(`1.2.3`, `preminor`)).toEqual(`1.3.0-0`);
+      expect(versionUtils.applyStrategy(`1.2.3`, `premajor`)).toEqual(`2.0.0-0`);
+    });
+  });
 });

packages/plugin-version/sources/versionUtils.ts

@@ -15,6 +15,9 @@ export enum Decision {
   MAJOR = `major`,
   MINOR = `minor`,
   PATCH = `patch`,
+  PREMAJOR = `premajor`,
+  PREMINOR = `preminor`,
+  PREPATCH = `prepatch`,
   PRERELEASE = `prerelease`,
 }
 
@@ -88,7 +91,11 @@ export async function resolveVersionFiles(project: Project, {prerelease = null}:
       const baseVersion = workspace.manifest.raw.stableVersion ?? workspace.manifest.version;
 
       const candidateRelease = candidateReleases.get(workspace);
-      const suggestedRelease = applyStrategy(baseVersion, validateReleaseDecision(decision));
+      // In case of prerelease decision with a prerelease version, the trailing number should be bumped
+      const suggestedRelease = Decision.PRERELEASE === decision ?
+        applyStrategy(workspace.manifest.version, validateReleaseDecision(decision)) :
+        applyStrategy(baseVersion, validateReleaseDecision(decision));
+
 
       if (suggestedRelease === null)
         throw new Error(`Assertion failed: Expected ${baseVersion} to support being bumped via strategy ${decision}`);