🚨 enforce scripts/ files conventions

.eslintrc.js

@@ -204,6 +204,7 @@ module.exports = {
       rules: {
         'unicorn/filename-case': ['error', { case: 'kebabCase' }],
         'local-rules/secure-command-execution': 'error',
+        'local-rules/disallow-non-scripts': 'error',
       },
     },
     {

eslint-local-rules/disallowNonScripts.js

@@ -0,0 +1,29 @@
+module.exports = {
+  meta: {
+    docs: {
+      description: 'Disallow JS files that are not used as a "script"',
+    },
+    schema: [],
+  },
+  create: (context) => ({
+    Program: (node) => {
+      if (!node.body.some(isMain)) {
+        context.report({
+          node,
+          message: 'This file should be a script and contain a `runMain()` expression',
+        })
+      }
+    },
+  }),
+}
+
+/**
+ * Check if the node is like `runMain(fn)`
+ */
+function isMain(node) {
+  return (
+    node.type === 'ExpressionStatement' &&
+    node.expression.type === 'CallExpression' &&
+    node.expression.callee.name === 'runMain'
+  )
+}

eslint-local-rules/index.js

@@ -15,5 +15,6 @@ module.exports = {
   'disallow-zone-js-patched-values': require('./disallowZoneJsPatchedValues'),
   'disallow-url-constructor-patched-values': require('./disallowUrlConstructorPatchValues.js'),
   'disallow-generic-utils': require('./disallowGenericUtils'),
+  'disallow-non-scripts': require('./disallowNonScripts'),
   'secure-command-execution': require('./secureCommandExecution'),
 }