init: typescript esm boilerplate

src/index.ts

@@ -0,0 +1,3 @@
+import { config } from '@/shared/config.js'
+
+console.log(`starting in ${config.mode} mode...`)

src/shared/config.ts

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+import { existsSync } from 'node:fs'
+import { loadEnvFile } from 'node:process'
+import env from 'env-var'
+
+if (existsSync('.env'))
+  loadEnvFile('.env')
+
+export const config = {
+  mode: env.get('NODE_ENV').default('production').asString(),
+}