Jest: fix SVG import breaking tests

jest.config.js

@@ -31,4 +31,11 @@ module.exports = {
     '<rootDir>/app',
   ],
   'testEnvironment': 'jsdom',
+  'moduleNameMapper': {
+    '^.+.(css|styl|less|sass|scss|png|jpg|svg|ttf|woff|woff2)$': 'jest-transform-stub',
+  },
+  'transform': {
+    '\\.[jt]sx?$': 'babel-jest',
+    '.+\\.(css|styl|less|sass|scss|png|jpg|svg|ttf|woff|woff2)$': 'jest-transform-stub',
+  },
 };

package.json

@@ -92,6 +92,7 @@
     "intl-messageformat-parser": "^6.0.0",
     "intl-pluralrules": "^1.3.0",
     "is-nan": "^1.2.1",
+    "jest-transform-stub": "^2.0.0",
     "jsdoc": "~3.6.7",
     "lodash": "^4.7.11",
     "mark-loader": "^0.1.6",

yarn.lock

@@ -7239,6 +7239,11 @@ jest-snapshot@^27.1.0:
     pretty-format "^27.1.0"
     semver "^7.3.2"
 
+jest-transform-stub@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/jest-transform-stub/-/jest-transform-stub-2.0.0.tgz#19018b0851f7568972147a5d60074b55f0225a7d"
+  integrity sha512-lspHaCRx/mBbnm3h4uMMS3R5aZzMwyNpNIJLXj4cEsV0mIUtS4IjYJLSoyjRCtnxb6RIGJ4NL2quZzfIeNhbkg==
+
 jest-util@^27.0.0:
   version "27.0.6"
   resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-27.0.6.tgz#e8e04eec159de2f4d5f57f795df9cdc091e50297"