jest-extended/dist/matchers/toBeEmpty.js

Additional Jest matchers

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.toBeEmpty = toBeEmpty;
function toBeEmpty(actual) {
    // @ts-expect-error OK to have implicit any for this.utils
    const { printReceived, matcherHint } = this.utils;
    // @ts-expect-error OK to have implicit any for this.equals
    const pass = this.equals({}, actual, this.customTesters) || isEmptyIterable(actual);
    return {
        pass,
        message: () => pass
            ? matcherHint('.not.toBeEmpty', 'received', '') +
                '\n\n' +
                'Expected value to not be empty received:\n' +
                `  ${printReceived(actual)}`
            : matcherHint('.toBeEmpty', 'received', '') +
                '\n\n' +
                'Expected value to be empty received:\n' +
                `  ${printReceived(actual)}`,
    };
}
const isEmptyIterable = (value) => {
    if (typeof value[Symbol.iterator] !== 'function') {
        return false;
    }
    const firstIteration = value[Symbol.iterator]().next();
    return firstIteration.done;
};