eslint-plugin-complete/dist/rules/require-unannotated-const-assertions.js

An ESLint plugin that contains useful rules.

import { createRule } from "../utils.js";
export const requireUnannotatedConstAssertions = createRule({
    name: "require-unannotated-const-assertions",
    meta: {
        type: "problem",
        docs: {
            description: "Disallows explicit type annotations for variables that have a const assertion",
            recommended: true,
            requiresTypeChecking: false,
        },
        schema: [],
        messages: {
            annotatedConstAssertion: "Don't use `as const` with a type annotated variable, since it widens the type.",
        },
    },
    defaultOptions: [],
    create(context) {
        return {
            'VariableDeclarator[id.typeAnnotation] :matches(TSTypeAssertion, TSAsExpression) > TSTypeReference.typeAnnotation > Identifier[name="const"]': (node) => {
                context.report({
                    node,
                    messageId: "annotatedConstAssertion",
                });
            },
        };
    },
});