feat: bump pre version (#70)

* feat: bump pre version

* feat: use pkg-types to read/write pkg version

* reverse: use path.resolve

* small updates and simplification

---------

Co-authored-by: Pooya Parsa <pooya@pi0.io>

README.md

@@ -45,6 +45,10 @@ npx changelogen@latest [...args] [--dir <dir>]
 - `--major`: Bump as a semver-major version
 - `--minor`: Bump as a semver-minor version
 - `--patch`: Bump as a semver-patch version
+- `--premajor`: Bump as a semver-premajor version, can set id with string.
+- `--preminor`: Bump as a semver-preminor version, can set id with string.
+- `--prepatch`: Bump as a semver-prepatch version, can set id with string.
+- `--prerelease`: Bump as a semver-prerelease version, can set id with string.
 
 ### `changelogen gh release`
 
@@ -87,6 +91,7 @@ Made with 💛
 Published under [MIT License](./LICENSE).
 
 <!-- Badges -->
+
 [npm-version-src]: https://img.shields.io/npm/v/changelogen?style=flat&colorA=18181B&colorB=F0DB4F
 [npm-version-href]: https://npmjs.com/package/changelogen
 [npm-downloads-src]: https://img.shields.io/npm/dm/changelogen?style=flat&colorA=18181B&colorB=F0DB4F

src/commands/default.ts

@@ -9,6 +9,7 @@ import {
   parseCommits,
   bumpVersion,
   generateMarkDown,
+  BumpVersionOptions,
 } from "..";
 import { githubRelease } from "./github";
 
@@ -38,15 +39,8 @@ export default async function defaultMain(args: Argv) {
 
   // Bump version optionally
   if (args.bump || args.release) {
-    let type;
-    if (args.major) {
-      type = "major";
-    } else if (args.minor) {
-      type = "minor";
-    } else if (args.patch) {
-      type = "patch";
-    }
-    const newVersion = await bumpVersion(commits, config, { type });
+    const bumpOptions = _getBumpVersionOptions(args);
+    const newVersion = await bumpVersion(commits, config, bumpOptions);
     if (!newVersion) {
       consola.error("Unable to bump version based on changes.");
       process.exit(1);
@@ -120,3 +114,28 @@ export default async function defaultMain(args: Argv) {
     }
   }
 }
+
+function _getBumpVersionOptions(args: Argv): BumpVersionOptions {
+  for (const type of [
+    "major",
+    "premajor",
+    "minor",
+    "preminor",
+    "patch",
+    "prepatch",
+    "prerelease",
+  ] as const) {
+    const value = args[type];
+    if (value) {
+      if (type.startsWith("pre")) {
+        return {
+          type,
+          preid: typeof value === "string" ? value : "",
+        };
+      }
+      return {
+        type,
+      };
+    }
+  }
+}

src/semver.ts

@@ -1,11 +1,18 @@
-import { promises as fsp } from "node:fs";
 import { resolve } from "node:path";
 import semver from "semver";
 import consola from "consola";
+import { readPackageJSON, writePackageJSON } from "pkg-types";
 import type { ChangelogConfig } from "./config";
 import type { GitCommit } from "./git";
 
-export type SemverBumpType = "major" | "minor" | "patch";
+export type SemverBumpType =
+  | "major"
+  | "premajor"
+  | "minor"
+  | "preminor"
+  | "patch"
+  | "prepatch"
+  | "prerelease";
 
 export function determineSemverChange(
   commits: GitCommit[],
@@ -27,17 +34,21 @@ export function determineSemverChange(
   return hasMajor ? "major" : hasMinor ? "minor" : hasPatch ? "patch" : null;
 }
 
+export type BumpVersionOptions = {
+  type?: SemverBumpType;
+  preid?: string;
+};
+
 export async function bumpVersion(
   commits: GitCommit[],
   config: ChangelogConfig,
-  opts: { type?: SemverBumpType } = {}
+  opts: BumpVersionOptions = {}
 ): Promise<string | false> {
   let type = opts.type || determineSemverChange(commits, config) || "patch";
   const originalType = type;
 
   const pkgPath = resolve(config.cwd, "package.json");
-  const pkg =
-    JSON.parse(await fsp.readFile(pkgPath, "utf8").catch(() => "{}")) || {};
+  const pkg = await readPackageJSON(pkgPath);
   const currentVersion = pkg.version || "0.0.0";
 
   if (currentVersion.startsWith("0.")) {
@@ -52,7 +63,7 @@ export async function bumpVersion(
     pkg.version = config.newVersion;
   } else if (type) {
     // eslint-disable-next-line import/no-named-as-default-member
-    pkg.version = semver.inc(currentVersion, type);
+    pkg.version = semver.inc(currentVersion, type, opts.preid);
     config.newVersion = pkg.version;
   }
 
@@ -63,7 +74,7 @@ export async function bumpVersion(
   consola.info(
     `Bumping version from ${currentVersion} to ${pkg.version} (${originalType})`
   );
-  await fsp.writeFile(pkgPath, JSON.stringify(pkg, null, 2) + "\n", "utf8");
+  await writePackageJSON(pkgPath, pkg);
 
   return pkg.version;
 }