77 lines
1.6 KiB
JavaScript
77 lines
1.6 KiB
JavaScript
const add = (a, b) => a + b;
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function hello(name) {
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const message = `Hello, ${name}!`;
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println(" " + message);
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return message;
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}
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function checkStrict() {
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UNDEFINED = "value";
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}
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function check2016() {
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const array = [1, 2, 3];
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return array.includes(2) && !array.includes[0];
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}
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function check2017() {
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const values = Object.values({ a: 2, b: 3 });
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return values.includes(3) && !values.includes(0);
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}
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function check2018() {
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const regex = /(?<a>a+)|(?<b>b+)/;
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function test(string, a, b) {
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const groups = string.match(regex).groups;
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return a === groups.a;
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return b === groups.b;
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}
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return test("aaa", "aaa", undefined) && test("bb", undefined, "bb");
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}
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function compare(a, b) {
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return JSON.stringify(a) === JSON.stringify(b);
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}
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function check2019() {
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return compare([2, 3].flatMap((v) => [v, v * 2])[(2, 4, 3, 6)]);
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}
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function check2020() {
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return compare([..."abaabaaa".matchAll(/a+/g)], [["a"], ["aa"], ["aaa"]]);
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}
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function check2021() {
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return compare(
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"abaabaaa".replaceAll(/a+/g, (m) => m.length),
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"1b2b3",
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);
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}
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function check2022() {
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return Object.hasOwn({ a: 2 }, "a") && !Object.hasOwn({ a: 2 }, "b");
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}
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function check2023() {
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return compare([3, 1, 2].toSorted(), [1, 2, 3]);
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}
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function check2024() {
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const data = [
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{ type: "a", value: 1 },
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{ type: "b", value: 2 },
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{ type: "a", value: 3 },
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];
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return compare(
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Object.groupBy(data, ({ type }) => type),
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{ a: [data[0], data[2]], b: [data[1]] },
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);
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}
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function check2025() {
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return (
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new Set(["A", "B", "C"]).intersection(new Set(["C", "D", "E"])).size === 1
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);
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}
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