feat(esbuild): watch mode back

esbuild.mjs

@@ -0,0 +1,24 @@
+import * as esbuild from 'esbuild';
+
+const options = {
+  entryPoints: ['src/index.ts'],
+  bundle: true,
+  minify: process.env.NODE_ENV === 'production',
+  sourcemap: process.env.NODE_ENV === 'development',
+  mainFields: ['module', 'main'],
+  external: ['coc.nvim'],
+  platform: 'node',
+  target: 'node14.14',
+  outfile: 'lib/index.js',
+};
+
+if (process.argv.length > 2 && process.argv[2] === '--watch') {
+  const ctx = await esbuild.context(options);
+  await ctx.watch();
+  console.log('watching...');
+} else {
+  const result = await esbuild.build(options);
+  if (result.errors.length) {
+    console.error(result.errors);
+  }
+}

package.json

@@ -31,8 +31,8 @@
     "schema": "curl -o schemas/pyrightconfig.schema.json https://raw.githubusercontent.com/microsoft/pyright/main/packages/vscode-pyright/schemas/pyrightconfig.schema.json && node diff.mjs",
     "clean": "rimraf lib",
     "lint": "eslint src --ext ts",
-    "build": "node esbuild.js",
-    "prepare": "node esbuild.js"
+    "build": "node esbuild.mjs",
+    "prepare": "node esbuild.mjs"
   },
   "devDependencies": {
     "@types/diff-match-patch": "^1.0.32",