add command upcoming

CHANGELOG.yml

@@ -6,7 +6,7 @@ project:
 releases:
   - version: NEXT
     changes:
-      - port the Perl changelord to JavaScript.
+      - port the core of the Perl changelord to JavaScript.
 change_types:
   - title: ""
     level: minor

src/changelord.js

@@ -12,6 +12,7 @@ import init from "./command/init.js";
 import schema from "./command/schema.js";
 import add from "./command/add.js";
 import cut from "./command/cut.js";
+import upcoming from "./command/upcoming.js";
 
 consola.raw = (...args) => console.log(...args);
 
@@ -27,5 +28,6 @@ yargs(hideBin(process.argv))
   .command(schema)
   .command(cut)
   .command(print)
+  .command(upcoming)
   .help()
   .parse();

src/command/upcoming.js

@@ -0,0 +1,24 @@
+import u from "@yanick/updeep-remeda";
+import fs from "fs-extra";
+import yaml from "yaml";
+import { render_release } from "./print.js";
+
+const handler = async (config) => {
+  const source = await fs.readFile(config.source, "utf-8").then(yaml.parse);
+
+  const res = render_release(
+    { ...config, next: true },
+    source
+  )(source.releases.find(u.matches({ version: "NEXT" })));
+
+  config.consola.raw("\n" + res.body);
+};
+
+export default {
+  command: "upcoming",
+  desc: "output the changes in NEXT",
+  builder: (yargs) => {
+    yargs;
+  },
+  handler,
+};