refactor(cli): discover package version at runtime

Instead of relying on esbuild to set the package version of the CLI,
we now load it from `VERSION.json`.
`scipts/version.sh` and thus `npm version` update `VERSION.json`.

We could directly load `package.json`,
unfortunately ESbuild is not able to tree-shake JSON files.
I opened the following issue: evanw/esbuild#4000

We have to require NodeJS 20.10.0 or above for import attributes.

CHANGELOG.md

@@ -6,6 +6,12 @@ This project adheres to [Semantic Versioning][semver].
 The format of this changelog is [a variant][lib9-versionning] of [Keep a Changelog][keep-changelog].
 New entries must be placed in a section entitled `Unreleased`.
 
+## Unreleased
+
+-   BREAKING CHANGES: require Node.js 20.10.0 or above
+
+    This allows us to use [import attributes](https://nodejs.org/api/esm.html#import-attributes).
+
 ## 0.16.0 (2024-11-02)
 
 -   BREAKING CHANGES: require Node.js 20.0.0 or above

VERSION.json

@@ -0,0 +1 @@
+"0.16.0"

package.json

@@ -23,7 +23,7 @@
     "url": "https://github.com/bare-ts/bare/issues"
   },
   "engines": {
-    "node": ">=20.0.0"
+    "node": ">=20.10.0"
   },
   "type": "module",
   "bin": {

scripts/build.sh

@@ -3,16 +3,15 @@ set -eu
 
 # https://node.green/#ES2022
 # https://kangax.github.io/compat-table/es2016plus
-TARGET='node16.9.0'
-VERSION=\""$npm_package_version"\"
+TARGET='node20.10.0'
 
 # build .d.ts
 tsc --build src/
 
 cp -f dist/index.d.ts dist/index.d.cts
 
 # build ESM
-esbuild 'src/**/*.ts' --target=$TARGET --define:VERSION=$VERSION --outdir=dist --log-level=warning
+esbuild 'src/**/*.ts' --target=$TARGET --outdir=dist --log-level=warning
 
 # build CommonJS (fallback)
 esbuild src/index.ts --bundle --target=$TARGET --platform=node > dist/index.cjs

scripts/version.sh

@@ -9,4 +9,6 @@ DATE="$(date -u +%Y-%m-%d)"
 # set version and current date
 sed -i "s/^## Unreleased$/## $npm_package_version ($DATE)/" CHANGELOG.md
 
-git add CHANGELOG.md
+echo "\"$npm_package_version\"" >| VERSION.json
+
+git add CHANGELOG.md VERSION.json

src/bin/cli.ts

@@ -6,11 +6,9 @@
 import * as fs from "node:fs"
 import * as process from "node:process"
 import * as util from "node:util"
+import packageVersion from "../../VERSION.json" with { type: "json" }
 import { CompilerError, Config, transform } from "../index.js"
 
-// WARNING: This constant MUST be defined at build time.
-declare const VERSION: string
-
 const HELP_TEXT = `
 Usage: bare [options] [schema]
 
@@ -82,7 +80,7 @@ function main(): void {
         if (values.help) {
             console.info(HELP_TEXT)
         } else if (values.version) {
-            console.info(VERSION)
+            console.info(packageVersion)
         } else {
             if (positionals.length > 1 && positionals[0] === "compile") {
                 positionals.pop()