rome · ematipico · Dec 22, 2022 · Dec 22, 2022
diff --git a/crates/rome_js_analyze/src/analyzers/suspicious/no_explicit_any.rs b/crates/rome_js_analyze/src/analyzers/suspicious/no_explicit_any.rs
@@ -5,7 +5,15 @@ use rome_js_syntax::TsAnyType;
 use rome_rowan::AstNode;
 
 declare_rule! {
-    /// Disallow the `any` type usage
+    /// Disallow the `any` type usage.
+    ///
+    /// The `any` type in TypeScript is a dangerous "escape hatch" from the type system.
+    /// Using `any` disables many type checking rules and is generally best used only as a last resort or when prototyping code.
+    ///
+    /// TypeScript's `--noImplicitAny` compiler option prevents an implied `any`,
+    /// but doesn't prevent `any` from being explicitly used the way this rule does.
+    ///
+    /// Source: https://typescript-eslint.io/rules/no-explicit-any
     ///
     /// ## Examples
     ///
@@ -66,7 +74,9 @@ impl Rule for NoExplicitAny {
             ctx.query().range(),
             markup! {"Unexpected "<Emphasis>"any"</Emphasis>". Specify a different type."}
                 .to_owned(),
-        );
+        ).note(markup! {
+            <Emphasis>"any"</Emphasis>" disables many type checking rules. Its use should be avoided."
+        });
 
         Some(diagnostic)
     }

diff --git a/crates/rome_js_analyze/tests/specs/suspicious/noExplicitAny/invalidClass.ts.snap b/crates/rome_js_analyze/tests/specs/suspicious/noExplicitAny/invalidClass.ts.snap
@@ -1,5 +1,6 @@
 ---
 source: crates/rome_js_analyze/tests/spec_tests.rs
+assertion_line: 92
 expression: invalidClass.ts
 ---
 # Input
@@ -52,6 +53,8 @@ invalidClass.ts:2:27 lint/suspicious/noExplicitAny ━━━━━━━━━
     3 │ }
     4 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -66,6 +69,8 @@ invalidClass.ts:6:11 lint/suspicious/noExplicitAny ━━━━━━━━━
     7 │ }
     8 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -80,6 +85,8 @@ invalidClass.ts:10:17 lint/suspicious/noExplicitAny ━━━━━━━━━
     11 │ }
     12 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -94,6 +101,8 @@ invalidClass.ts:14:11 lint/suspicious/noExplicitAny ━━━━━━━━━
     15 │ }
     16 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -108,6 +117,8 @@ invalidClass.ts:18:23 lint/suspicious/noExplicitAny ━━━━━━━━━
     19 │ }
     20 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -122,6 +133,8 @@ invalidClass.ts:22:17 lint/suspicious/noExplicitAny ━━━━━━━━━
     23 │ }
     24 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -137,6 +150,8 @@ invalidClass.ts:25:15 lint/suspicious/noExplicitAny ━━━━━━━━━
     26 │ 
     27 │ abstract class Foo<t = any> extends Bar<any> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -152,6 +167,8 @@ invalidClass.ts:25:32 lint/suspicious/noExplicitAny ━━━━━━━━━
     26 │ 
     27 │ abstract class Foo<t = any> extends Bar<any> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -167,6 +184,8 @@ invalidClass.ts:27:24 lint/suspicious/noExplicitAny ━━━━━━━━━
     28 │ 
     29 │ abstract class Foo<t = any> implements Bar<any>, Baz<any> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -182,6 +201,8 @@ invalidClass.ts:27:41 lint/suspicious/noExplicitAny ━━━━━━━━━
     28 │ 
     29 │ abstract class Foo<t = any> implements Bar<any>, Baz<any> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -197,6 +218,8 @@ invalidClass.ts:29:24 lint/suspicious/noExplicitAny ━━━━━━━━━
     30 │ 
     31 │ new Foo<any>()
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -212,6 +235,8 @@ invalidClass.ts:29:44 lint/suspicious/noExplicitAny ━━━━━━━━━
     30 │ 
     31 │ new Foo<any>()
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -227,6 +252,8 @@ invalidClass.ts:29:54 lint/suspicious/noExplicitAny ━━━━━━━━━
     30 │ 
     31 │ new Foo<any>()
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -242,6 +269,8 @@ invalidClass.ts:31:9 lint/suspicious/noExplicitAny ━━━━━━━━━
     32 │ 
     33 │ Foo<any>()
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -256,6 +285,8 @@ invalidClass.ts:33:5 lint/suspicious/noExplicitAny ━━━━━━━━━
        │     ^^^
     34 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 

diff --git a/crates/rome_js_analyze/tests/specs/suspicious/noExplicitAny/invalidFunction.ts.snap b/crates/rome_js_analyze/tests/specs/suspicious/noExplicitAny/invalidFunction.ts.snap
@@ -1,5 +1,6 @@
 ---
 source: crates/rome_js_analyze/tests/spec_tests.rs
+assertion_line: 92
 expression: invalidFunction.ts
 ---
 # Input
@@ -47,6 +48,8 @@ invalidFunction.ts:1:21 lint/suspicious/noExplicitAny ━━━━━━━━
     2 │ 
     3 │ function generic2(): Array<any> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -62,6 +65,8 @@ invalidFunction.ts:3:28 lint/suspicious/noExplicitAny ━━━━━━━━
     4 │ 
     5 │ function generic3(): any[] {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -77,6 +82,8 @@ invalidFunction.ts:5:22 lint/suspicious/noExplicitAny ━━━━━━━━
     6 │ 
     7 │ function generic4(param: Array<any>): number {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -92,6 +99,8 @@ invalidFunction.ts:7:32 lint/suspicious/noExplicitAny ━━━━━━━━
     8 │ 
     9 │ function generic5(param: any[]): number {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -107,6 +116,8 @@ invalidFunction.ts:9:26 lint/suspicious/noExplicitAny ━━━━━━━━
     10 │ 
     11 │ function generic6(param: Array<any>): Array<any> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -122,6 +133,8 @@ invalidFunction.ts:11:32 lint/suspicious/noExplicitAny ━━━━━━━━
     12 │ 
     13 │ function generic7(): Array<Array<any>> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -137,6 +150,8 @@ invalidFunction.ts:11:45 lint/suspicious/noExplicitAny ━━━━━━━━
     12 │ 
     13 │ function generic7(): Array<Array<any>> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -152,6 +167,8 @@ invalidFunction.ts:13:34 lint/suspicious/noExplicitAny ━━━━━━━━
     14 │ 
     15 │ function generic8(): Array<any[]> {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -167,6 +184,8 @@ invalidFunction.ts:15:28 lint/suspicious/noExplicitAny ━━━━━━━━
     16 │ 
     17 │ function test<T extends Partial<any>>() {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -182,6 +201,8 @@ invalidFunction.ts:17:33 lint/suspicious/noExplicitAny ━━━━━━━━
     18 │ 
     19 │ function foo(a: number, ...rest: any[]): void {
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -197,6 +218,8 @@ invalidFunction.ts:19:34 lint/suspicious/noExplicitAny ━━━━━━━━
     20 │ 	return;
     21 │ }
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -212,6 +235,8 @@ invalidFunction.ts:23:24 lint/suspicious/noExplicitAny ━━━━━━━━
     24 │ 
     25 │ function quux5(fn: (...args: any) => void): void {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -227,6 +252,8 @@ invalidFunction.ts:25:30 lint/suspicious/noExplicitAny ━━━━━━━━
     26 │ 
     27 │ function quuz5(): ((...args: any) => void) {}
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -242,6 +269,8 @@ invalidFunction.ts:27:30 lint/suspicious/noExplicitAny ━━━━━━━━
     28 │ 
     29 │ declare function waldo5(...args: any): void;
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```
 
@@ -256,6 +285,8 @@ invalidFunction.ts:29:34 lint/suspicious/noExplicitAny ━━━━━━━━
        │                                  ^^^
     30 │ 
 
+  i any disables many type checking rules. Its use should be avoided.
+
 
 ```