From 43d1cf6ad49b00c077c01560bbedc9fc8c61311d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Pierzcha=C5=82a?= <thymikee@gmail.com>
Date: Thu, 13 Jun 2019 10:30:46 +0200
Subject: [PATCH] fix(jest-haste-map): don't throw on missing mapper in Node
 crawler (#8558)

* fix(jest-haste-map): don't pass mapper to Node crawler

* add changelog

* get rid of throwing when mapper passed to node crawler
---
 CHANGELOG.md                                        | 1 +
 packages/jest-haste-map/src/__tests__/index.test.js | 1 +
 packages/jest-haste-map/src/crawlers/node.ts        | 4 ----
 3 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ef6cb5bb8d9..c9b964f9d1b4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 - `[babel-plugin-jest-hoist]` Expand list of whitelisted globals in global mocks ([#8429](https://github.com/facebook/jest/pull/8429)
 - `[jest-core]` Make watch plugin initialization errors look nice ([#8422](https://github.com/facebook/jest/pull/8422))
 - `[jest-snapshot]` Prevent inline snapshots from drifting when inline snapshots are updated ([#8492](https://github.com/facebook/jest/pull/8492))
+- `[jest-haste-map]` Don't throw on missing mapper in Node crawler ([#8558](https://github.com/facebook/jest/pull/8558))
 
 ### Chore & Maintenance
 
diff --git a/packages/jest-haste-map/src/__tests__/index.test.js b/packages/jest-haste-map/src/__tests__/index.test.js
index a24f9c3bddbf..196094edd1c8 100644
--- a/packages/jest-haste-map/src/__tests__/index.test.js
+++ b/packages/jest-haste-map/src/__tests__/index.test.js
@@ -426,6 +426,7 @@ describe('HasteMap', () => {
         const hasteMap = new HasteMap({
           ...defaultConfig,
           computeSha1: true,
+          mapper: file => [file],
           maxWorkers: 1,
           useWatchman,
         });
diff --git a/packages/jest-haste-map/src/crawlers/node.ts b/packages/jest-haste-map/src/crawlers/node.ts
index 71ee6c053a3b..87bcb00b9680 100644
--- a/packages/jest-haste-map/src/crawlers/node.ts
+++ b/packages/jest-haste-map/src/crawlers/node.ts
@@ -139,10 +139,6 @@ export = function nodeCrawl(
   removedFiles: FileData;
   hasteMap: InternalHasteMap;
 }> {
-  if (options.mapper) {
-    throw new Error(`Option 'mapper' isn't supported by the Node crawler`);
-  }
-
   const {
     data,
     extensions,