Generate version from git describe at build time (#1374)

* Generate version from git describe at build time

* Add 2.0-beta prefix

* Use Deno.Command instead of Deno.run

.gitignore

@@ -15,3 +15,4 @@ silverbullet
 deploy.json
 *.generated
 tmp_playground
+/version.ts

build_bundle.ts

@@ -1,6 +1,9 @@
 import { denoPlugins } from "@luca/esbuild-deno-loader";
 import * as esbuild from "esbuild";
 
+import { updateVersionFile } from "./update_version.ts";
+
+await updateVersionFile();
 await Deno.mkdir("dist", { recursive: true });
 await esbuild.build({
   entryPoints: {

build_plugs.ts

@@ -4,6 +4,9 @@ import { compileManifests } from "./cmd/compile.ts";
 import { builtinPlugNames } from "./plugs/builtin_plugs.ts";
 import { parseArgs } from "@std/cli/parse-args";
 import { fileURLToPath } from "node:url";
+import { updateVersionFile } from "./update_version.ts";
+
+await updateVersionFile();
 
 if (import.meta.main) {
   const args = parseArgs(Deno.args, {

build_web.ts

@@ -8,6 +8,9 @@ import { parseArgs } from "@std/cli/parse-args";
 import { patchDenoLibJS } from "./cmd/compile.ts";
 import { denoPlugins } from "@luca/esbuild-deno-loader";
 import * as esbuild from "esbuild";
+import { updateVersionFile } from "./update_version.ts";
+
+await updateVersionFile();
 
 export async function bundleAll(
   watch: boolean,

update_version.ts

@@ -0,0 +1,16 @@
+export async function updateVersionFile() {
+  const command = new Deno.Command("git", {
+    args: ["describe", "--tags", "--long", "--dirty"],
+    stdout: "piped",
+    stderr: "piped",
+  });
+
+  const { stdout } = await command.output();
+  const commitVersion = new TextDecoder().decode(stdout).trim();
+
+  const versionFilePath = "./version.ts";
+  const versionContent = `export const version = "2.0-beta (${commitVersion})";\n`;
+
+  await Deno.writeTextFile(versionFilePath, versionContent);
+  console.log(`Updated version.ts with version information: ${commitVersion}`);
+}

version.ts

@@ -1 +0,0 @@
-export const version = "2.0-beta";