Add rule @typescript-eslint/restrict-template-expressions

Author: Shinigami92

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

@@ -10,6 +10,7 @@ import type { NoUnusedVarsRule } from './no-unused-vars';
 import type { PreferNullishCoalescingRule } from './prefer-nullish-coalescing';
 import type { PreferOptionalChainRule } from './prefer-optional-chain';
 import type { PreferReadonlyRule } from './prefer-readonly';
+import type { RestrictTemplateExpressionsRule } from './restrict-template-expressions';
 
 /**
  * All @typescript-eslint rules.
@@ -25,4 +26,5 @@ export type TypeScriptEslintRules = BanTsCommentRule &
   NoUnusedVarsRule &
   PreferNullishCoalescingRule &
   PreferOptionalChainRule &
-  PreferReadonlyRule;
+  PreferReadonlyRule &
+  RestrictTemplateExpressionsRule;

src/rules/typescript-eslint/restrict-template-expressions.d.ts

@@ -0,0 +1,65 @@
+import type { RuleConfig } from '../rule-config';
+
+/**
+ * Option.
+ */
+export type RestrictTemplateExpressionsOption = {
+  /**
+   * If `true`, also allow number type in template expressions.
+   *
+   * @default true
+   *
+   * @see [allowNumber](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md#allownumber)
+   */
+  allowNumber?: boolean;
+  /**
+   * If `true`, also allow boolean type in template expressions.
+   *
+   * @default false
+   *
+   * @see [allowBoolean](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md#allowboolean)
+   */
+  allowBoolean?: boolean;
+  /**
+   * If `true`, also allow any in template expressions.
+   *
+   * @default false
+   *
+   * @see [allowAny](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md#allowany)
+   */
+  allowAny?: boolean;
+  /**
+   * If `true`, also allow null and undefined in template expressions.
+   *
+   * @default false
+   *
+   * @see [allowNullish](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md#allownullish)
+   */
+  allowNullish?: boolean;
+};
+
+/**
+ * Options.
+ */
+export type RestrictTemplateExpressionsOptions = [RestrictTemplateExpressionsOption?];
+
+/**
+ * Enforce template literal expressions to be of string type.
+ *
+ * @see [restrict-template-expressions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md)
+ */
+export type RestrictTemplateExpressionsRuleConfig = RuleConfig<RestrictTemplateExpressionsOptions>;
+
+/**
+ * Enforce template literal expressions to be of string type.
+ *
+ * @see [restrict-template-expressions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md)
+ */
+export interface RestrictTemplateExpressionsRule {
+  /**
+   * Enforce template literal expressions to be of string type.
+   *
+   * @see [restrict-template-expressions](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/restrict-template-expressions.md)
+   */
+  '@typescript-eslint/restrict-template-expressions': RestrictTemplateExpressionsRuleConfig;
+}