feat: Add support for custom rule messages

README.md

@@ -111,6 +111,8 @@ export default [
 }
 ```
 
+## Settings
+
 ### Aliased Playwright Globals
 
 If you import Playwright globals (e.g. `test`, `expect`) with a custom name, you
@@ -129,6 +131,27 @@ can configure this plugin to be aware of these additional names.
 }
 ```
 
+### Custom Messages
+
+You can customize the error messages for rules using the
+`settings.playwright.messages` property. This is useful if you would like to
+increase the verbosity of error messages or provide additional context.
+
+Only the message ids you define in this setting will be overridden, so any other
+messages will use the default message defined by the plugin.
+
+```json
+{
+  "settings": {
+    "playwright": {
+      "messages": {
+        "conditionalExpect": "Avoid conditional expects as they can lead to false positives"
+      }
+    }
+  }
+}
+```
+
 ## Rules
 
 ✅ Set in the `recommended` configuration\

src/rules/expect-expect.ts

@@ -1,9 +1,9 @@
-import { Rule } from 'eslint'
 import ESTree from 'estree'
 import { dig } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { parseFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     const options = {
       assertFunctionNames: [] as string[],
@@ -69,4 +69,4 @@ export default {
     ],
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/max-expects.ts

@@ -1,9 +1,9 @@
-import { Rule } from 'eslint'
 import * as ESTree from 'estree'
 import { getParent } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { isTypeOfFnCall, parseFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     const options = {
       max: 5,
@@ -78,4 +78,4 @@ export default {
     ],
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/max-nested-describe.ts

@@ -1,8 +1,8 @@
-import { Rule } from 'eslint'
 import * as ESTree from 'estree'
+import { createRule } from '../utils/createRule'
 import { isTypeOfFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     const { options } = context
     const max: number = options[0]?.max ?? 5
@@ -57,4 +57,4 @@ export default {
     ],
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/missing-playwright-await.ts

@@ -1,6 +1,7 @@
 import { Rule } from 'eslint'
 import ESTree from 'estree'
 import { getParent, getStringValue, isIdentifier } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { ParsedFnCall, parseFnCall } from '../utils/parseFnCall'
 
 const validTypes = new Set([
@@ -81,7 +82,7 @@ function getCallType(call: ParsedFnCall, awaitableMatchers: Set<string>) {
   }
 }
 
-export default {
+export default createRule({
   create(context) {
     const options = context.options[0] || {}
     const awaitableMatchers = new Set([
@@ -182,4 +183,4 @@ export default {
     ],
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-commented-out-tests.ts

@@ -1,5 +1,6 @@
 import { Rule } from 'eslint'
 import * as ESTree from 'estree'
+import { createRule } from '../utils/createRule'
 
 function getTestNames(context: Rule.RuleContext) {
   const aliases = context.settings.playwright?.globalAliases?.test ?? []
@@ -16,7 +17,7 @@ function hasTests(context: Rule.RuleContext, node: ESTree.Comment) {
   return regex.test(node.value)
 }
 
-export default {
+export default createRule({
   create(context) {
     function checkNode(node: ESTree.Comment) {
       if (!hasTests(context, node)) return
@@ -45,4 +46,4 @@ export default {
     },
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-conditional-expect.ts

@@ -1,6 +1,7 @@
 import { Rule, Scope } from 'eslint'
 import * as ESTree from 'estree'
 import { getParent, isPropertyAccessor } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { isTypeOfFnCall, parseFnCall } from '../utils/parseFnCall'
 import { KnownCallExpression } from '../utils/types'
 
@@ -30,7 +31,7 @@ const getTestCallExpressionsFromDeclaredVariables = (
   )
 }
 
-export default {
+export default createRule({
   create(context) {
     let conditionalDepth = 0
     let inTestCase = false
@@ -109,4 +110,4 @@ export default {
     },
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-conditional-in-test.ts

@@ -1,8 +1,9 @@
 import { Rule } from 'eslint'
 import { findParent } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { isTypeOfFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     function checkConditional(node: Rule.Node & Rule.NodeParentExtension) {
       const call = findParent(node, 'CallExpression')
@@ -33,4 +34,4 @@ export default {
     schema: [],
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-duplicate-hooks.ts

@@ -1,8 +1,8 @@
-import { Rule } from 'eslint'
 import { getStringValue } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { isTypeOfFnCall, parseFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     const hookContexts: Array<Record<string, number>> = [{}]
 
@@ -55,4 +55,4 @@ export default {
     },
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/no-element-handle.ts

@@ -1,14 +1,15 @@
-import { AST, Rule } from 'eslint'
+import { AST } from 'eslint'
 import ESTree from 'estree'
 import { isPageMethod } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 
 function getPropertyRange(node: ESTree.Node): AST.Range {
   return node.type === 'Identifier'
     ? node.range!
     : [node.range![0] + 1, node.range![1] - 1]
 }
 
-export default {
+export default createRule({
   create(context) {
     return {
       CallExpression(node) {
@@ -68,4 +69,4 @@ export default {
     },
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/no-eval.test.ts

@@ -1,3 +1,4 @@
+import dedent from 'dedent'
 import rule from '../../src/rules/no-eval'
 import { runRuleTester, test } from '../utils/rule-tester'
 
@@ -63,6 +64,29 @@ runRuleTester('no-eval', rule, {
       ),
       errors: [{ column: 52, endColumn: 63, line: 1, messageId: 'noEvalAll' }],
     },
+
+    // Custom messages
+    // Note: This is one of the only test in the project to tests custom
+    // messages since it's implementation is global in the `createRule` method.
+    {
+      code: dedent`
+        page.$eval("#search", el => el.value);
+        page.$$eval("#search", el => el.value);
+      `,
+      errors: [
+        { column: 1, endColumn: 11, line: 1, message: 'no eval' },
+        { column: 1, endColumn: 12, line: 2, message: 'no eval all' },
+      ],
+      name: 'Custom messages',
+      settings: {
+        playwright: {
+          messages: {
+            noEval: 'no eval',
+            noEvalAll: 'no eval all',
+          },
+        },
+      },
+    },
   ],
   valid: [
     test('await page.locator(".tweet").evaluate(node => node.innerText)'),

src/rules/no-eval.ts

@@ -1,7 +1,7 @@
-import { Rule } from 'eslint'
 import { isPageMethod } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 
-export default {
+export default createRule({
   create(context) {
     return {
       CallExpression(node) {
@@ -30,4 +30,4 @@ export default {
     },
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-focused-test.ts

@@ -1,8 +1,8 @@
-import { Rule } from 'eslint'
 import { getStringValue } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 import { parseFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     return {
       CallExpression(node) {
@@ -47,4 +47,4 @@ export default {
     },
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-force-option.ts

@@ -1,6 +1,6 @@
-import { Rule } from 'eslint'
 import ESTree from 'estree'
 import { getStringValue, isBooleanLiteral } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 
 function isForceOptionEnabled(node: ESTree.CallExpression) {
   const arg = node.arguments.at(-1)
@@ -31,7 +31,7 @@ const methodsWithForceOption = new Set([
   'tap',
 ])
 
-export default {
+export default createRule({
   create(context) {
     return {
       MemberExpression(node) {
@@ -60,4 +60,4 @@ export default {
     },
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/no-get-by-title.ts

@@ -1,7 +1,7 @@
-import { Rule } from 'eslint'
 import { isPageMethod } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 
-export default {
+export default createRule({
   create(context) {
     return {
       CallExpression(node) {
@@ -24,4 +24,4 @@ export default {
     },
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/no-hooks.ts

@@ -1,7 +1,7 @@
-import { Rule } from 'eslint'
+import { createRule } from '../utils/createRule'
 import { parseFnCall } from '../utils/parseFnCall'
 
-export default {
+export default createRule({
   create(context) {
     const options = {
       allow: [] as string[],
@@ -47,4 +47,4 @@ export default {
     ],
     type: 'suggestion',
   },
-} as Rule.RuleModule
+})

src/rules/no-nested-step.ts

@@ -1,6 +1,7 @@
 import { Rule } from 'eslint'
 import ESTree from 'estree'
 import { isPropertyAccessor } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 
 function isStepCall(node: ESTree.Node): boolean {
   const inner = node.type === 'CallExpression' ? node.callee : node
@@ -12,7 +13,7 @@ function isStepCall(node: ESTree.Node): boolean {
   return isPropertyAccessor(inner, 'step')
 }
 
-export default {
+export default createRule({
   create(context) {
     const stack: number[] = []
 
@@ -59,4 +60,4 @@ export default {
     schema: [],
     type: 'problem',
   },
-} as Rule.RuleModule
+})

src/rules/no-networkidle.ts

@@ -1,6 +1,6 @@
-import { Rule } from 'eslint'
 import ESTree from 'estree'
 import { getStringValue, isStringLiteral } from '../utils/ast'
+import { createRule } from '../utils/createRule'
 
 const messageId = 'noNetworkidle'
 const methods = new Set([
@@ -13,7 +13,7 @@ const methods = new Set([
   'waitForURL',
 ])
 
-export default {
+export default createRule({
   create(context) {
     return {
       CallExpression(node) {
@@ -61,4 +61,4 @@ export default {
     },
     type: 'problem',
   },
-} as Rule.RuleModule
+})