Add type safety to jest config (#35210)

jest.config.json → jest.config.js

-{
-  "moduleNameMapper": {
+// @ts-check
+/** @type {import('jest').Config} */
+const config = {
+  moduleNameMapper: {
     "\\.(css|less)$": "<rootDir>/frontend/test/__mocks__/styleMock.js",
-    "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/frontend/test/__mocks__/fileMock.js",
-    "^promise-loader\\?global\\!metabase-lib\\/metadata\\/utils\\/ga-metadata$": "<rootDir>/frontend/src/metabase-lib/metadata/utils/ga-metadata.js",
-    "ace/ext-searchbox": "<rootDir>/frontend/test/__mocks__/aceSearchBoxExtMock.js",
+    "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$":
+      "<rootDir>/frontend/test/__mocks__/fileMock.js",
+    "^promise-loader\\?global\\!metabase-lib\\/metadata\\/utils\\/ga-metadata$":
+      "<rootDir>/frontend/src/metabase-lib/metadata/utils/ga-metadata.js",
+    "ace/ext-searchbox":
+      "<rootDir>/frontend/test/__mocks__/aceSearchBoxExtMock.js",
     "^cljs/(.*)$": "<rootDir>/target/cljs_dev/$1",
     "^d3-(.*)$": "<rootDir>/node_modules/d3-$1/dist/d3-$1",
-    "react-markdown": "<rootDir>/node_modules/react-markdown/react-markdown.min.js",
-    "\\.svg\\?(component|source)": "<rootDir>/frontend/test/__mocks__/svgMock.jsx"
+    "react-markdown":
+      "<rootDir>/node_modules/react-markdown/react-markdown.min.js",
+    "\\.svg\\?(component|source)":
+      "<rootDir>/frontend/test/__mocks__/svgMock.jsx",
   },
-  "transformIgnorePatterns": [
-    "<rootDir>/node_modules/(?!rehype-external-links/)"
+  transformIgnorePatterns: [
+    "<rootDir>/node_modules/(?!rehype-external-links/)",
   ],
-  "testPathIgnorePatterns": [
-    "<rootDir>/frontend/.*/.*.tz.unit.spec.{js,jsx,ts,tsx}"
+  testPathIgnorePatterns: [
+    "<rootDir>/frontend/.*/.*.tz.unit.spec.{js,jsx,ts,tsx}",
   ],
-  "testMatch": [
+  testMatch: [
     "<rootDir>/**/*.unit.spec.js",
-    "<rootDir>/**/*.unit.spec.{js,jsx,ts,tsx}"
+    "<rootDir>/**/*.unit.spec.{js,jsx,ts,tsx}",
   ],
-  "modulePaths": [
+  modulePaths: [
     "<rootDir>/frontend/test",
     "<rootDir>/frontend/src",
-    "<rootDir>/enterprise/frontend/src"
+    "<rootDir>/enterprise/frontend/src",
   ],
-  "modulePathIgnorePatterns": ["<rootDir>/target/cljs_release/.*"],
-  "setupFiles": [
+  modulePathIgnorePatterns: ["<rootDir>/target/cljs_release/.*"],
+  setupFiles: [
     "<rootDir>/frontend/test/jest-setup.js",
     "<rootDir>/frontend/test/metabase-bootstrap.js",
-    "<rootDir>/frontend/test/register-visualizations.js"
+    "<rootDir>/frontend/test/register-visualizations.js",
   ],
-  "setupFilesAfterEnv": [
+  setupFilesAfterEnv: [
     "@testing-library/jest-dom/extend-expect",
-    "<rootDir>/frontend/test/jest-setup-env.js"
+    "<rootDir>/frontend/test/jest-setup-env.js",
   ],
-  "globals": {
-    "ace": {},
-    "ga": {}
+  globals: {
+    ace: {},
+    ga: {},
   },
-  "coverageDirectory": "./coverage",
-  "coverageReporters": ["html", "lcov"],
-  "collectCoverageFrom": [
+  coverageDirectory: "./coverage",
+  coverageReporters: ["html", "lcov"],
+  collectCoverageFrom: [
     "frontend/src/**/*.{js,jsx,ts,tsx}",
     "enterprise/frontend/src/**/*.{js,jsx,ts,tsx}",
     "!<rootDir>/**/*.styled.{js,jsx,ts,tsx}",
     "!<rootDir>/**/*.story.{js,jsx,ts,tsx}",
     "!<rootDir>/**/*.info.{js,jsx,ts,tsx}",
-    "!<rootDir>/**/*.unit.spec.{js,jsx,ts,tsx}"
+    "!<rootDir>/**/*.unit.spec.{js,jsx,ts,tsx}",
   ],
-  "coveragePathIgnorePatterns": [
+  coveragePathIgnorePatterns: [
     "/node_modules/",
     "/frontend/src/metabase/visualizations/lib/errors.js",
     "/target/cljs_dev/",
     "/target/cljs_release/",
-    "/frontend/test/"
+    "/frontend/test/",
   ],
-  "testEnvironment": "jest-environment-jsdom",
-  "watchPlugins": [
+  testEnvironment: "jest-environment-jsdom",
+  watchPlugins: [
     "jest-watch-typeahead/filename",
-    "jest-watch-typeahead/testname"
+    "jest-watch-typeahead/testname",
   ],
-  "testTimeout": 30000
-}
+  testTimeout: 30000,
+};
+
+// eslint-disable-next-line import/no-commonjs
+module.exports = config;