chore: import upstream snapshot with attribution

curriculum/challenges/english/blocks/basic-algorithm-scripting/a77dbc43c33f39daa4429b4f.md

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+---
+id: a77dbc43c33f39daa4429b4f
+title: Boo who
+challengeType: 1
+forumTopicId: 16000
+dashedName: boo-who
+---
+
+# --description--
+
+Check if a value is classified as a boolean primitive. Return `true` or `false`.
+
+Boolean primitives are `true` and `false`.
+
+# --hints--
+
+`booWho(true)` should return `true`.
+
+```js
+assert.isTrue(booWho(true));
+```
+
+`booWho(false)` should return `true`.
+
+```js
+assert.isTrue(booWho(false));
+```
+
+`booWho([1, 2, 3])` should return `false`.
+
+```js
+assert.isFalse(booWho([1, 2, 3]));
+```
+
+`booWho([].slice)` should return `false`.
+
+```js
+assert.isFalse(booWho([].slice));
+```
+
+`booWho({ "a": 1 })` should return `false`.
+
+```js
+assert.isFalse(booWho({ a: 1 }));
+```
+
+`booWho(1)` should return `false`.
+
+```js
+assert.isFalse(booWho(1));
+```
+
+`booWho(NaN)` should return `false`.
+
+```js
+assert.isFalse(booWho(NaN));
+```
+
+`booWho("a")` should return `false`.
+
+```js
+assert.isFalse(booWho('a'));
+```
+
+`booWho("true")` should return `false`.
+
+```js
+assert.isFalse(booWho('true'));
+```
+
+`booWho("false")` should return `false`.
+
+```js
+assert.isFalse(booWho('false'));
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+function booWho(bool) {
+  return bool;
+}
+
+booWho(null);
+```
+
+# --solutions--
+
+```js
+function booWho(bool) {
+  return typeof bool === 'boolean';
+}
+
+booWho(null);
+```