Add rule @typescript-eslint/consistent-type-assertions

Author: Shinigami92

src/rules/typescript-eslint/consistent-type-assertions.d.ts

@@ -0,0 +1,63 @@
+import type { RuleConfig } from '../rule-config';
+
+/**
+ * Option.
+ */
+export type ConsistentTypeAssertionsOption =
+  | {
+      /* Empty option */
+    }
+  | {
+      /**
+       * This option defines the expected assertion style.
+       *
+       * @default 'as'
+       *
+       * @see [assertionStyle](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-assertions.md#assertionstyle)
+       */
+      assertionStyle: 'as' | 'angle-bracket';
+      /**
+       * Always prefer `const x: T = { ... };` to `const x = { ... } as T;` (or similar with angle brackets).
+       *
+       * The type assertion in the latter case is either unnecessary or will probably hide an error.
+       *
+       * @default 'allow'
+       *
+       * @see [objectLiteralTypeAssertions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-assertions.md#objectliteraltypeassertions)
+       */
+      objectLiteralTypeAssertions?: 'allow' | 'allow-as-parameter' | 'never';
+    }
+  | {
+      /**
+       * This option defines the expected assertion style.
+       *
+       * @see [assertionStyle](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-assertions.md#assertionstyle)
+       */
+      assertionStyle: 'never';
+    };
+
+/**
+ * Options.
+ */
+export type ConsistentTypeAssertionsOptions = [ConsistentTypeAssertionsOption?];
+
+/**
+ * Enforces consistent usage of type assertions.
+ *
+ * @see [consistent-type-assertions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-assertions.md)
+ */
+export type ConsistentTypeAssertionsRuleConfig = RuleConfig<ConsistentTypeAssertionsOptions>;
+
+/**
+ * Enforces consistent usage of type assertions.
+ *
+ * @see [consistent-type-assertions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-assertions.md)
+ */
+export interface ConsistentTypeAssertionsRule {
+  /**
+   * Enforces consistent usage of type assertions.
+   *
+   * @see [consistent-type-assertions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/consistent-type-assertions.md)
+   */
+  '@typescript-eslint/consistent-type-assertions': ConsistentTypeAssertionsRuleConfig;
+}

src/rules/typescript-eslint/index.d.ts

@@ -3,6 +3,7 @@ import type { ArrayTypeRule } from './array-type';
 import type { AwaitThenableRule } from './await-thenable';
 import type { BanTsCommentRule } from './ban-ts-comment';
 import type { BanTypesRule } from './ban-types';
+import type { ConsistentTypeAssertionsRule } from './consistent-type-assertions';
 import type { ExplicitFunctionReturnTypeRule } from './explicit-function-return-type';
 import type { InterfaceNamePrefixRule } from './interface-name-prefix';
 import type { MemberOrderingRule } from './member-ordering';
@@ -25,6 +26,7 @@ export type TypeScriptEslintRules = AdjacentOverloadSignaturesRule &
   AwaitThenableRule &
   BanTsCommentRule &
   BanTypesRule &
+  ConsistentTypeAssertionsRule &
   ExplicitFunctionReturnTypeRule &
   InterfaceNamePrefixRule &
   MemberOrderingRule &