type-fns/dist/checks/hasMetadata.test.js

A set of types, type checks, and type guards for simpler, safer, and easier to read code.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const __1 = require("..");
describe('HasMetadata', () => {
    it('should enable accessing an optional metadata property of a type', () => {
        const pot = { id: 123, age: 72 };
        expect(pot.id.toFixed).toBeDefined(); // no type errors
    });
});
describe('OmitMetadata', () => {
    it('should prevent specifying a metadata property of a type', () => {
        // @ts-expect-error - should not be able to set id
        const pot = { id: 123, age: 72 };
    });
    it('should prevent accessing a metadata property of a type', () => {
        const pot = { age: 72 };
        // @ts-expect-error - should not be able to get id
        expect(pot.id).not.toBeDefined();
    });
});
describe('hasMetadata', () => {
    it('should enable accessing an optional metadata property of a type', () => {
        const pot = { id: 123, age: 72 };
        if (!(0, __1.hasMetadata)(pot, ['id']))
            throw new Error('doesnt have metadata');
        expect(pot.id.toFixed).toBeDefined();
    });
});
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