fix(metro): vendor countLines from metro (#5185)

Author: antonis

CHANGELOG.md

@@ -10,6 +10,7 @@
 
 ### Fixes
 
+- Vendor `metro/countLines` function to avoid issues with the private import ([#5185](https://github.com/getsentry/sentry-react-native/pull/5185))
 - Fix baseJSBundle and bundleToString TypeErrors with Metro 0.83.2 ([#5206](https://github.com/getsentry/sentry-react-native/pull/5206))
 
 ### Dependencies

packages/core/src/js/tools/sentryMetroSerializer.ts

@@ -1,19 +1,12 @@
 import * as crypto from 'crypto';
 // eslint-disable-next-line import/no-extraneous-dependencies
 import type { MixedOutput, Module, ReadOnlyGraph } from 'metro';
-import type * as countLinesType from 'metro/private/lib/countLines';
 
 import type { Bundle, MetroSerializer, MetroSerializerOutput, SerializedBundle, VirtualJSOutput } from './utils';
 import { createDebugIdSnippet, createSet, determineDebugIdFromBundleSource, stringToUUID } from './utils';
+import countLines from './vendor/metro/countLines';
 import { createDefaultMetroSerializer } from './vendor/metro/utils';
 
-let countLines: typeof countLinesType;
-try {
-  countLines = require('metro/private/lib/countLines');
-} catch (e) {
-  countLines = require('metro/src/lib/countLines');
-}
-
 type SourceMap = Record<string, unknown>;
 
 const DEBUG_ID_PLACE_HOLDER = '__debug_id_place_holder__';

packages/core/src/js/tools/vendor/metro/countLines.ts

@@ -0,0 +1,33 @@
+// Vendored from @facebook/metro
+
+// https://github.com/facebook/metro/blob/93d68cca249202fd3eb52672217e725d90e44eb4/packages/metro/src/lib/countLines.js
+
+// MIT License
+
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// This is exported as private from `metro` and as such breaking changes can appear anytime.
+// In the past these were related to the way the function is exported. Never to the function itself.
+// Thus it should be more stable to vendor it.
+
+const newline = /\r\n?|\n|\u2028|\u2029/g;
+
+export default (string: string): number => (string.match(newline) || []).length + 1;