diff --git a/1-js/05-data-types/07-map-set/01-array-unique-map/_js.view/test.js b/1-js/05-data-types/07-map-set/01-array-unique-map/_js.view/test.js
@@ -1,13 +1,13 @@
describe("unique", function() {
-  it("removes non-unique elements", function() {
    let strings = ["Hare", "Krishna", "Hare", "Krishna",
      "Krishna", "Krishna", "Hare", "Hare", ":-O"
    ];

    assert.deepEqual(unique(strings), ["Hare", "Krishna", ":-O"]);
  });

-  it("does not change the source array", function() {
    let strings = ["Krishna", "Krishna", "Hare", "Hare"];
    unique(strings);
    assert.deepEqual(strings, ["Krishna", "Krishna", "Hare", "Hare"]);

diff --git a/1-js/05-data-types/07-map-set/02-filter-anagrams/_js.view/test.js b/1-js/05-data-types/07-map-set/02-filter-anagrams/_js.view/test.js
@@ -2,9 +2,9 @@ function intersection(arr1, arr2) {
  return arr1.filter(item => arr2.includes(item));
}

-describe("aclean", function() {

-  it("returns exactly 1 word from each anagram set", function() {
    let arr = ["nap", "teachers", "cheaters", "PAN", "ear", "era", "hectares"];

    let result = aclean(arr);
@@ -16,7 +16,7 @@ describe("aclean", function() {

  });

-  it("is case-insensitive", function() {
    let arr = ["era", "EAR"];
    assert.equal(aclean(arr).length, 1);
  });

diff --git a/1-js/05-data-types/07-map-set/02-filter-anagrams/task.md b/1-js/05-data-types/07-map-set/02-filter-anagrams/task.md
@@ -2,27 +2,27 @@ importance: 4

---

-# Filter anagrams

-[Anagrams](https://en.wikipedia.org/wiki/Anagram) are words that have the same number of same letters, but in different order.

-For instance:

```
nap - pan
ear - are - era
cheaters - hectares - teachers
```

-Write a function `aclean(arr)` that returns an array cleaned from anagrams.

-For instance:

```js
let arr = ["nap", "teachers", "cheaters", "PAN", "ear", "era", "hectares"];

alert( aclean(arr) ); // "nap,teachers,ear" or "PAN,cheaters,era"
```

-From every anagram group should remain only one word, no matter which one.

diff --git a/1-js/05-data-types/07-map-set/03-iterable-keys/solution.md b/1-js/05-data-types/07-map-set/03-iterable-keys/solution.md
@@ -1,7 +1,7 @@

-That's because `map.keys()` returns an iterable, but not an array.

-We can convert it into an array using `Array.from`:


```js run

diff --git a/1-js/05-data-types/07-map-set/03-iterable-keys/task.md b/1-js/05-data-types/07-map-set/03-iterable-keys/task.md
@@ -2,11 +2,11 @@ importance: 5

---

-# Iterable keys

-We'd like to get an array of `map.keys()` in a variable and then apply array-specific methods to it, e.g. `.push`.

-But that doesn't work:

```js run
let map = new Map();
@@ -16,9 +16,9 @@ map.set("name", "John");
let keys = map.keys();

*!*
-// Error: keys.push is not a function
keys.push("more");
*/!*
```

-Why? How can we fix the code to make `keys.push` work?