From c3c7d1ddcea1b324db61a21fc52f74a7810f48c7 Mon Sep 17 00:00:00 2001
From: alina sireneva <alina@tei.su>
Date: Thu, 25 Apr 2024 13:46:11 +0300
Subject: [PATCH] build: added deprecation notice to commonjs builds

---
 packages/node/src/client.ts | 13 +++++++------
 scripts/build-package.js    | 25 ++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/packages/node/src/client.ts b/packages/node/src/client.ts
index 34ac6caf..19a4594b 100644
--- a/packages/node/src/client.ts
+++ b/packages/node/src/client.ts
@@ -1,4 +1,3 @@
-import { createRequire } from 'module'
 import { createInterface, Interface as RlInterface } from 'readline'
 
 import { FileDownloadLocation, FileDownloadParameters, ITelegramStorageProvider, PartialOnly, User } from '@mtcute/core'
@@ -23,11 +22,13 @@ export type { TelegramClientOptions }
 let nativeCrypto: any
 
 try {
-    // @only-if-esm
-    const require = createRequire(import.meta.url)
-    // @/only-if-esm
-    // eslint-disable-next-line
-    nativeCrypto = require('@mtcute/crypto-node').NodeNativeCryptoProvider
+    /* eslint-disable @typescript-eslint/prefer-ts-expect-error, @typescript-eslint/ban-ts-comment */
+    /* eslint-disable import/no-unresolved */
+    // @ts-ignore  not in deps
+    // @esm-replace-import
+    nativeCrypto = (await import('@mtcute/crypto-node')).NodeNativeCryptoProvider // eslint-disable-line
+    /* eslint-enable @typescript-eslint/prefer-ts-expect-error, @typescript-eslint/ban-ts-comment */
+    /* eslint-enable import/no-unresolved */
 } catch (e) {}
 
 export interface BaseTelegramClientOptions
diff --git a/scripts/build-package.js b/scripts/build-package.js
index b697cf93..fc7bec73 100644
--- a/scripts/build-package.js
+++ b/scripts/build-package.js
@@ -274,7 +274,7 @@ if (buildConfig.buildTs && !IS_JSR) {
             if (!content.includes('@esm-replace-import')) continue
             originalFiles[f] = content
 
-            fs.writeFileSync(f, content.replace(/@esm-replace-import.*?await import/gs, 'require'))
+            fs.writeFileSync(f, content.replace(/(?<=@esm-replace-import.*?)await import/gs, 'require'))
         }
 
         // set type=commonjs in all package.json-s
@@ -464,6 +464,29 @@ const builtPkgJson = buildPackageJson()
 
 if (buildConfig.buildCjs) {
     fs.writeFileSync(path.join(outDir, 'cjs/package.json'), JSON.stringify({ type: 'commonjs' }, null, 2))
+
+    const CJS_DEPRECATION_WARNING = `
+"use strict";
+if (typeof globalThis !== 'undefined' && !globalThis._MTCUTE_CJS_DEPRECATION_WARNED) { 
+    globalThis._MTCUTE_CJS_DEPRECATION_WARNED = true
+    console.warn("[${builtPkgJson.name}] CommonJS support is deprecated and will be removed soon. Please consider switching to ESM, it's "+(new Date()).getFullYear()+" already.")
+    console.warn("[${builtPkgJson.name}] Learn more about switching to ESM: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c")
+}
+`.trim()
+    const entrypoints = []
+
+    if (typeof builtPkgJson.exports === 'string') {
+        entrypoints.push(builtPkgJson.exports)
+    } else if (builtPkgJson.exports && typeof builtPkgJson.exports === 'object') {
+        for (const entrypoint of Object.values(builtPkgJson.exports)) {
+            entrypoints.push(entrypoint.require)
+        }
+    }
+
+    for (const entry of entrypoints) {
+        if (!entry.endsWith('.js')) continue
+        transformFile(path.join(outDir, entry), (content) => `${CJS_DEPRECATION_WARNING}\n${content}`)
+    }
 }
 
 if (IS_JSR) {