Added suggestions for regexp/no-escape-backspace (#622)

* Added suggestions for `regexp/no-escape-backspace`

* Create twenty-snails-chew.md

Author: RunDevelopment

.changeset/twenty-snails-chew.md

@@ -0,0 +1,5 @@
+---
+"eslint-plugin-regexp": minor
+---
+
+Added suggestions for `regexp/no-escape-backspace`

README.md

@@ -117,7 +117,7 @@ The `plugin:regexp/all` config enables all rules. It's meant for testing, not fo
 | [no-empty-character-class](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-empty-character-class.html)                         | disallow character classes that match no characters                                     | ✅  |    |    |    |
 | [no-empty-group](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-empty-group.html)                                             | disallow empty group                                                                    | ✅  |    |    |    |
 | [no-empty-lookarounds-assertion](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-empty-lookarounds-assertion.html)             | disallow empty lookahead assertion or empty lookbehind assertion                        | ✅  |    |    |    |
-| [no-escape-backspace](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-escape-backspace.html)                                   | disallow escape backspace (`[\b]`)                                                      | ✅  |    |    |    |
+| [no-escape-backspace](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-escape-backspace.html)                                   | disallow escape backspace (`[\b]`)                                                      | ✅  |    |    | 💡 |
 | [no-invalid-regexp](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-invalid-regexp.html)                                       | disallow invalid regular expression strings in `RegExp` constructors                    | ✅  |    |    |    |
 | [no-lazy-ends](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-lazy-ends.html)                                                 | disallow lazy quantifiers at the end of an expression                                   |    | ✅  |    |    |
 | [no-misleading-capturing-group](https://ota-meshi.github.io/eslint-plugin-regexp/rules/no-misleading-capturing-group.html)               | disallow capturing groups that do not behave as one would expect                        | ✅  |    |    | 💡 |

docs/rules/index.md

@@ -24,7 +24,7 @@ sidebarDepth: 0
 | [no-empty-character-class](no-empty-character-class.md)                         | disallow character classes that match no characters                                     | ✅  |    |    |    |
 | [no-empty-group](no-empty-group.md)                                             | disallow empty group                                                                    | ✅  |    |    |    |
 | [no-empty-lookarounds-assertion](no-empty-lookarounds-assertion.md)             | disallow empty lookahead assertion or empty lookbehind assertion                        | ✅  |    |    |    |
-| [no-escape-backspace](no-escape-backspace.md)                                   | disallow escape backspace (`[\b]`)                                                      | ✅  |    |    |    |
+| [no-escape-backspace](no-escape-backspace.md)                                   | disallow escape backspace (`[\b]`)                                                      | ✅  |    |    | 💡 |
 | [no-invalid-regexp](no-invalid-regexp.md)                                       | disallow invalid regular expression strings in `RegExp` constructors                    | ✅  |    |    |    |
 | [no-lazy-ends](no-lazy-ends.md)                                                 | disallow lazy quantifiers at the end of an expression                                   |    | ✅  |    |    |
 | [no-misleading-capturing-group](no-misleading-capturing-group.md)               | disallow capturing groups that do not behave as one would expect                        | ✅  |    |    | 💡 |

docs/rules/no-escape-backspace.md

@@ -9,6 +9,8 @@ since: "v0.1.0"
 
 💼 This rule is enabled in the ✅ `plugin:regexp/recommended` config.
 
+💡 This rule is manually fixable by [editor suggestions](https://eslint.org/docs/developer-guide/working-with-rules#providing-suggestions).
+
 <!-- end auto-generated rule header -->
 
 > disallow escape backspace (`[\b]`)

lib/rules/no-escape-backspace.ts

@@ -10,15 +10,18 @@ export default createRule("no-escape-backspace", {
             recommended: true,
         },
         schema: [],
+        hasSuggestions: true,
         messages: {
             unexpected: "Unexpected '[\\b]'. Use '\\u0008' instead.",
+            suggest: "Use '\\u0008'.",
         },
         type: "suggestion", // "problem",
     },
     create(context) {
         function createVisitor({
             node,
             getRegexpLocation,
+            fixReplaceNode,
         }: RegExpContext): RegExpVisitor.Handlers {
             return {
                 onCharacterEnter(cNode) {
@@ -27,6 +30,12 @@ export default createRule("no-escape-backspace", {
                             node,
                             loc: getRegexpLocation(cNode),
                             messageId: "unexpected",
+                            suggest: [
+                                {
+                                    messageId: "suggest",
+                                    fix: fixReplaceNode(cNode, "\\u0008"),
+                                },
+                            ],
                         })
                     }
                 },

tests/lib/rules/no-escape-backspace.ts

@@ -18,6 +18,7 @@ tester.run("no-escape-backspace", rule as any, {
                     message: "Unexpected '[\\b]'. Use '\\u0008' instead.",
                     column: 3,
                     endColumn: 5,
+                    suggestions: [{ output: "/[\\u0008]/" }],
                 },
             ],
         },