feat: add data from old project

Author: JulienDemarque

data/README.md

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+# Data for Code Quiz
+
+The `index.json` file at the root describes all the categories available for quizes. The `name` is how it will show up in the app, and the `key` maps to a folder containing quizzes.
+
+Inside each category folder, there will also be an `index.json` file. It will describe the quizzes (title, description, difficulty, answer choices, correct answer). The quizzes themselves will live in subfolders and use the file format for the language they are describing.
+
+Should difficulty be universal for all quizzes or allow categories to define their own range?

data/index.json

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+{
+  "categories": [
+    {
+      "name": "JavaScript",
+      "key": "javascript"
+    }
+  ]
+}

data/javascript/index.json

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+{
+	"name": "javascript",
+	"subcategories": ["all", "arithmetic", "coercion"],
+	"quizzes": [
+		{
+			"title": "Simple Add",
+			"key": "simple-add",
+			"categories": ["beginner", "interview"],
+			"subcategory": "arithmetic"
+		},
+		{
+			"title": "Plus Operator Coercion",
+			"key": "plus-operator-coercion",
+			"categories": ["beginner", "interview"],
+			"subcategory": "coercion"
+		},
+		{
+			"title": "Minus Operator Coercion",
+			"key": "minus-operator-coercion",
+			"categories": ["beginner", "interview"],
+			"subcategory": "coercion"
+		}
+	],
+	"minimumDifficulty": 1,
+	"maximumDifficulty": 10
+}

data/javascript/minus-operator-coercion/index.json

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+{
+	"title": "Minus Operator Coercion",
+	"description": "Understand the - operator coercion",
+	"questionFile": "question.js",
+	"difficulty": 1,
+	"correctAnswer": "1 NaN 2",
+	"answers": [
+		{
+			"answer": "NaN NaN NaN"
+		},
+		{
+			"answer": "undefined undefined 2"
+		},
+		{
+			"answer": "NaN NaN 2"
+		},
+		{
+			"answer": "1 NaN 2"
+		}
+	]
+}

data/javascript/minus-operator-coercion/question.js

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+// What will console.log from the following code;
+
+console.log(true - false, 2 - "foo", "3" - 1);

data/javascript/plus-operator-coercion/index.json

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+{
+	"title": "Plus Operator Coercion",
+	"description": "Understand the + operator coercion",
+	"questionFile": "question.js",
+	"difficulty": 1,
+	"correctAnswer": "1 'truefoo' 'bar5'",
+	"answers": [
+		{
+			"answer": "'true0' 'truefoo' 6"
+		},
+		{
+			"answer": "1 'truefoo' 'bar5'"
+		},
+		{
+			"answer": "true 'truefoo' 'bar5'"
+		},
+		{
+			"answer": "true true 'bar5'"
+		}
+	]
+}

data/javascript/plus-operator-coercion/question.js

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+// What will console.log from the following code;
+
+console.log(true + 0, true + "foo", "bar" + 5);

data/javascript/simple-add/index.json

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+{
+	"title": "Simple Add",
+	"description": "Solve a simple addition",
+	"questionFile": "question.js",
+	"difficulty": 1,
+	"correctAnswer": "5",
+	"answers": [
+		{
+			"answer": "3"
+		},
+		{
+			"answer": "4"
+		},
+		{
+			"answer": "5"
+		},
+		{
+			"answer": "6"
+		}
+	]
+}

data/javascript/simple-add/question.js

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+// What will console.log from the following code;
+const simpleAdd = (a, b) => a + b;
+
+console.log(simpleAdd(2, 3));