Add a rule for not accidentally using webContents.send directly

.eslintrc.yml

@@ -25,6 +25,7 @@ rules:
   react-no-unbound-dispatcher-props: error
   react-readonly-props-and-state: error
   react-proper-lifecycle-methods: error
+  no-loosely-typed-webcontents-ipc: error
 
   ###########
   # PLUGINS #

eslint-rules/no-loosely-typed-webcontents-ipc.js

@@ -0,0 +1,58 @@
+// @ts-check
+
+/**
+ * @typedef {import('eslint').Rule.RuleModule} RuleModule
+ */
+
+function isLooselyTypesWebContentsCall(context, node) {
+  const { callee } = node
+
+  if (!['MemberExpression', 'OptionalMemberExpression'].includes(callee.type)) {
+    return
+  }
+
+  const prop = callee.property
+
+  if (prop.type !== 'Identifier' || prop.name !== 'send') {
+    return
+  }
+
+  // wc.send() but not foo.wc.send
+  if (callee.object.type === 'Identifier' && callee.object.name === 'wc') {
+    context.report({ node, messageId: 'useStronglyTypedWebContentsIPC' })
+    return
+  }
+
+  const obj = callee.object
+
+  // *.webContents?.send
+  if (obj.type === 'MemberExpression' && obj.property.name === 'webContents') {
+    context.report({ node, messageId: 'useStronglyTypedWebContentsIPC' })
+  }
+
+  // webContents.send
+  if (obj.type === 'Identifier' && obj.name === 'webContents') {
+    context.report({ node, messageId: 'useStronglyTypedWebContentsIPC' })
+  }
+}
+
+/** @type {RuleModule} */
+module.exports = {
+  meta: {
+    docs: {
+      description: 'Do not use loosely typed webContents methods',
+      category: 'Best Practices',
+    },
+    // strings from https://github.com/Microsoft/tslint-microsoft-contrib/blob/b720cd9/src/insecureRandomRule.ts
+    messages: {
+      useStronglyTypedWebContentsIPC:
+        'Please use the strongly typed IPC helper methods from `ipc-webcontents` instead',
+    },
+  },
+  create(context) {
+    return {
+      OptionalCallExpression: n => isLooselyTypesWebContentsCall(context, n),
+      CallExpression: n => isLooselyTypesWebContentsCall(context, n),
+    }
+  },
+}