Don’t crash because of PNGs

.nycrc-frontend.json

@@ -6,5 +6,5 @@
   "sourceMap": false,
   "instrument": false,
   "include": ["frontend/**/*.js"],
-  "exclude": ["**/*.spec.js"]
+  "exclude": ["**/*.spec.js", "**/mocha-*.js"]
 }

frontend/mocha-ignore-pngs.js

@@ -0,0 +1,5 @@
+import requireHacker from 'require-hacker'
+
+// https://diessi.ca/blog/how-to-exclude-css-images-anything-from-unit-tests/
+
+requireHacker.hook('png', () => 'module.exports = ""')

package.json

@@ -82,7 +82,7 @@
     "test:js:server": "echo \"Deprecated; run `npm run test:core` instead.\" && npm run test:core",
     "test:js:frontend": "echo \"Deprecated; run `npm run test:frontend` instead.\" && npm run test:frontend",
     "test:js:package": "echo \"Deprecated; run `npm run test:package` instead.\" && npm run test:package",
-    "test:frontend": "cross-env NODE_ENV=test mocha --opts mocha.opts --require @babel/polyfill --require @babel/register --require mocha-yaml-loader \"frontend/**/*.spec.js\"",
+    "test:frontend": "cross-env NODE_ENV=test mocha --opts mocha.opts --require @babel/polyfill --require @babel/register --require mocha-yaml-loader --require frontend/mocha-ignore-pngs \"frontend/**/*.spec.js\"",
     "test:core": "cross-env NODE_CONFIG_ENV=test mocha --opts mocha.opts \"core/**/*.spec.js\" \"lib/**/*.spec.js\" \"services/**/*.spec.js\"",
     "test:package": "mocha --opts mocha.opts \"gh-badges/**/*.spec.js\"",
     "test:entrypoint": "cross-env NODE_CONFIG_ENV=test mocha --opts mocha.opts entrypoint.spec.js",
@@ -201,6 +201,7 @@
     "react-select": "^2.3.0",
     "read-all-stdin-sync": "^1.0.5",
     "redis-server": "^1.2.2",
+    "require-hacker": "^3.0.1",
     "rimraf": "^2.6.3",
     "sazerac": "^0.4.2",
     "sinon": "^7.2.3",