fix(jest-config): move json behind ts (#10572)

Author: jackneer

CHANGELOG.md

@@ -24,6 +24,7 @@
 - `[expect]` [**BREAKING**] Make `toContain` more strict with the received type ([#10119](https://github.com/facebook/jest/pull/10119) & [#10929](https://github.com/facebook/jest/pull/10929))
 - `[jest-circus]` Fixed the issue of beforeAll & afterAll hooks getting executed even if it is inside a skipped `describe` block [#10451](https://github.com/facebook/jest/issues/10451)
 - `[jest-circus]` Fix `testLocation` on Windows when using `test.each` ([#10871](https://github.com/facebook/jest/pull/10871))
+- `[jest-config]` [**BREAKING**] Change default file extension order by moving json behind ts and tsx ([10572](https://github.com/facebook/jest/pull/10572))
 - `[jest-console]` `console.dir` now respects the second argument correctly ([#10638](https://github.com/facebook/jest/pull/10638))
 - `[jest-each]` [**BREAKING**] Ignore excess words in headings ([#8766](https://github.com/facebook/jest/pull/8766))
 - `[jest-environment-jsdom]` Use inner realm’s `ArrayBuffer` constructor ([#10885](https://github.com/facebook/jest/pull/10885))

docs/Configuration.md

@@ -534,7 +534,7 @@ An array of directory names to be searched recursively up from the requiring mod
 
 ### `moduleFileExtensions` [array\<string>]
 
-Default: `["js", "json", "jsx", "ts", "tsx", "node"]`
+Default: `["js", "jsx", "ts", "tsx", "json", "node"]`
 
 An array of file extensions your modules use. If you require modules without specifying a file extension, these are the extensions Jest will look for, in left-to-right order.
 

e2e/__tests__/__snapshots__/showConfig.test.ts.snap

@@ -29,10 +29,10 @@ exports[`--showConfig outputs config info and exits 1`] = `
       ],
       "moduleFileExtensions": [
         "js",
-        "json",
         "jsx",
         "ts",
         "tsx",
+        "json",
         "node"
       ],
       "moduleNameMapper": [],

packages/jest-cli/src/init/__tests__/__snapshots__/init.test.js.snap

@@ -191,10 +191,10 @@ module.exports = {
   // An array of file extensions your modules use
   // moduleFileExtensions: [
   //   \\"js\\",
-  //   \\"json\\",
   //   \\"jsx\\",
   //   \\"ts\\",
   //   \\"tsx\\",
+  //   \\"json\\",
   //   \\"node\\"
   // ],
 

packages/jest-config/src/Defaults.ts

@@ -37,7 +37,7 @@ const defaultOptions: Config.DefaultOptions = {
   maxConcurrency: 5,
   maxWorkers: '50%',
   moduleDirectories: ['node_modules'],
-  moduleFileExtensions: ['js', 'json', 'jsx', 'ts', 'tsx', 'node'],
+  moduleFileExtensions: ['js', 'jsx', 'ts', 'tsx', 'json', 'node'],
   moduleNameMapper: {},
   modulePathIgnorePatterns: [],
   noStackTrace: false,

packages/jest-config/src/__tests__/normalize.test.js

@@ -1605,10 +1605,10 @@ describe('moduleFileExtensions', () => {
 
     expect(options.moduleFileExtensions).toEqual([
       'js',
-      'json',
       'jsx',
       'ts',
       'tsx',
+      'json',
       'node',
     ]);
   });