eslint-codemod-utils/dist/cjs/__tests__/ts-node.test.js

A collection of AST helper functions for more complex ESLint rule fixes.

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
const __1 = require("..");
const espree = __importStar(require("@typescript-eslint/parser"));
const ESPREE_OPTIONS = {
    ecmaVersion: 2015,
    sourceType: 'module',
};
describe('tsAsExpression', () => {
    test('basic', () => {
        expect(String((0, __1.tsAsExpression)({
            expression: (0, __1.literal)('hello'),
            typeAnnotation: (0, __1.tsAnyKeyword)({}),
        }))).eq(`'hello' as any`);
    });
    test('parsed with as string keyword', () => {
        const { body } = espree.parse(`const x = 'hello' as string`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`const x = 'hello' as string`);
    });
    test('parsed with as type', () => {
        const { body } = espree.parse(`const x = 'hello' as World`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`const x = 'hello' as World`);
    });
    test('parsed with as type with type parameter', () => {
        const { body } = espree.parse(`"2" as React.Ref<HTMLDivElement>`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`"2" as React.Ref<HTMLDivElement>`);
    });
    test('parsed with as type with type parameter', () => {
        const { body } = espree.parse(`"2" as React.Ref<HTMLDivElement, true>`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`"2" as React.Ref<HTMLDivElement, true>`);
    });
    test('parsed non-null ts expression', () => {
        const { body } = espree.parse(`inputEl.current!.select()`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`inputEl.current!.select()`);
    });
    test('parsed keyword assertions', () => {
        const { body } = espree.parse(`"10" as any as unknown as null as boolean`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`"10" as any as unknown as null as boolean`);
    });
    test('parsed ts union & intersection types', () => {
        const { body } = espree.parse(`type X = 'hello' | 'thing' & 8`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`type X = 'hello' | 'thing' & 8`);
    });
    test('parsed ts type query', () => {
        const { body } = espree.parse(`type X = 'hello'\ntype Y = typeof X`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`type X = 'hello'`);
        expect((0, __1.node)(body[1]).toString()).eq(`type Y = typeof X`);
    });
    test('parsed ts type operator', () => {
        const { body } = espree.parse(`type X = 'hello'\ntype Y = keyof typeof X`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`type X = 'hello'`);
        expect((0, __1.node)(body[1]).toString()).eq(`type Y = keyof typeof X`);
    });
    test('type alias declaration (keyword)', () => {
        const { body } = espree.parse(`type X = string`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`type X = string`);
    });
    test('type alias declaration (literal)', () => {
        const { body } = espree.parse(`type X = 'hello'`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`type X = 'hello'`);
    });
    test('parsed ts union & intersection types with generic', () => {
        const { body } = espree.parse(`type X<T> = 'hello' | 'thing' & 8`, ESPREE_OPTIONS);
        expect((0, __1.node)(body[0]).toString()).eq(`type X<T> = 'hello' | 'thing' & 8`);
    });
});