feat: add support for multiple .env files

docs/pages/env-vars-config.md

@@ -13,6 +13,15 @@ Glee provides a few environment variables for you to customize the Glee applicat
 |GLEE_SERVER_CERTS|A comma-separated list of `${serverName}:${pathToCertificateFile}`. These are the certificates to use when establishing the connection to the given server.|`GLEE_SERVER_CERTS=mosquitto:mosquitto.org.crt`|
 |GLEE_SERVER_VARIABLES|A comma-separated list of `${serverName}:${serverVariable}:${value}`. These are the values to use for each server variable.|`GLEE_SERVER_VARIABLES=websockets:namespace:public`|
 
+### Support for multiple .env files
+Glee has support for loading variables from `.env.local` into `process.env`.
+This is useful for storing secret environment variables needed in development while keeping them out of the repository.
+
+However, sometimes you might want to add some defaults for the `development` or `production` environment. You can do that by creating files with the following names:
+`.env.development` or `.env.production`
+
+`.env.local` always overrides any other existing `.env*` file.
+
 ## Configuring Glee
 
 Glee comes with sensible defaults so you don't have to worry about configuration. However, sometimes you may want to change the behavior or customize Glee in different ways. For that purpose, you can use the `glee.config.js` file.

package.json

@@ -38,6 +38,7 @@
     "@asyncapi/html-template": "^2.0.0",
     "@asyncapi/markdown-template": "^1.5.0",
     "@asyncapi/parser": "^3.0.2",
+    "@next/env": "^14.0.4",
     "@types/jest": "^29.5.11",
     "@types/qs": "^6.9.7",
     "ajv": "^6.12.6",

src/index.ts

@@ -1,6 +1,4 @@
 import { resolve } from 'path'
-import * as dotenv from 'dotenv'
-import dotenvExpand from 'dotenv-expand'
 import Glee from './lib/glee.js'
 import { logWelcome, logLineWithIcon, logWarningMessage } from './lib/logger.js'
 import experimentalFlags from './lib/experimentalFlags.js'
@@ -33,9 +31,11 @@ import { getSelectedServerNames } from './lib/servers.js'
 import { EnrichedEvent, AuthEvent } from './lib/adapter.js'
 import { ClusterEvent } from './lib/cluster.js'
 import { getMessagesSchema } from './lib/util.js'
-import { ChannelInterface, OperationReplyInterface } from '@asyncapi/parser'
+import { OperationReplyInterface } from '@asyncapi/parser'
+import { loadEnvConfig } from '@next/env'
 
-dotenvExpand(dotenv.config())
+const isDev = process.env.NODE_ENV === 'development'
+loadEnvConfig(process.cwd(), isDev)
 
 enum LOG_CONFIG {
   NONE = 'none',
@@ -100,27 +100,27 @@ export default async function GleeAppInitializer() {
   app.useOutbound(errorLogger)
   await generateDocs(config)
   parsedAsyncAPI.operations().filterByReceive().forEach(operation => {
-    const channel = operation.channels()[0] // operation can have only one channel.
-    const reply = operation.reply()
-    setUpReplyMiddlewares(reply, app)
-
-    const schema = getMessagesSchema(operation)
-    if (schema.oneOf.length > 0) app.use(channel.id(), validate(schema))
-    app.use(channel.id(), (event, next) => {
-      triggerFunction({
-        app,
-        operation,
-        message: event
-      }).then(next).catch(next)
+      const channel = operation.channels()[0] // operation can have only one channel.
+      const reply = operation.reply()
+      setUpReplyMiddlewares(reply, app)
+
+      const schema = getMessagesSchema(operation)
+      if (schema.oneOf.length > 0) app.use(channel.id(), validate(schema))
+      app.use(channel.id(), (event, next) => {
+        triggerFunction({
+          app,
+          operation,
+          message: event
+        }).then(next).catch(next)
+      })
     })
-  })
 
   parsedAsyncAPI.operations().filterBySend().forEach(operation => {
-    const channel = operation.channels()[0] // operation can have only one channel.
-    const schema = getMessagesSchema(operation)
-    if (schema.oneOf.length > 0) app.useOutbound(channel.id(), validate(schema))
-    app.useOutbound(channel.id(), json2string)
-  })
+      const channel = operation.channels()[0] // operation can have only one channel.
+      const schema = getMessagesSchema(operation)
+      if (schema.oneOf.length > 0) app.useOutbound(channel.id(), validate(schema))
+            app.useOutbound(channel.id(), json2string)
+    })
 
   app.on('adapter:auth', async (e: AuthEvent) => {
     logLineWithIcon(