Update exercises and add .diffignore

kentcdodds · kentcdodds · commit 331efe4b8da5 · 2026-01-14T10:48:44.000-07:00
diff --git a/epicshop/.diffignore b/epicshop/.diffignore
@@ -0,0 +1 @@
+*.test.*
diff --git a/exercises/01.expressions-and-output/01.problem.hello-world/index.ts b/exercises/01.expressions-and-output/01.problem.hello-world/index.ts
@@ -4,5 +4,3 @@
 // 🐨 Use console.log() to print "Hello, World!"
 
 // 🐨 Use console.log() to print your name (as a string)
-
-export {}
diff --git a/exercises/01.expressions-and-output/01.solution.hello-world/index.ts b/exercises/01.expressions-and-output/01.solution.hello-world/index.ts
@@ -4,5 +4,3 @@
 console.log('Hello, World!')
 
 console.log('Kody')
-
-export {}
diff --git a/exercises/01.expressions-and-output/02.problem.strings/index.ts b/exercises/01.expressions-and-output/02.problem.strings/index.ts
@@ -7,5 +7,3 @@
 
 // 🐨 Log a sentence by concatenating multiple strings
 // 💰 Example: "I" + " " + "am" + " " + "learning" + " " + "to" + " " + "code"
-
-export {}
diff --git a/exercises/01.expressions-and-output/02.solution.strings/index.ts b/exercises/01.expressions-and-output/02.solution.strings/index.ts
@@ -6,5 +6,3 @@ console.log('Hello' + ' ' + 'TypeScript')
 console.log('Kody' + ' ' + 'Koala')
 
 console.log('I' + ' ' + 'am' + ' ' + 'learning' + ' ' + 'to' + ' ' + 'code')
-
-export {}
diff --git a/exercises/01.expressions-and-output/03.problem.numbers/index.ts b/exercises/01.expressions-and-output/03.problem.numbers/index.ts
@@ -9,5 +9,3 @@
 
 // 🐨 Log the result of (10 + 5) * 2
 // 💰 Parentheses control order of operations
-
-export {}
diff --git a/exercises/01.expressions-and-output/03.solution.numbers/index.ts b/exercises/01.expressions-and-output/03.solution.numbers/index.ts
@@ -8,5 +8,3 @@ console.log(8 * 6)
 console.log(100 / 4)
 
 console.log((10 + 5) * 2)
-
-export {}
diff --git a/exercises/01.expressions-and-output/04.problem.template-literals/index.ts b/exercises/01.expressions-and-output/04.problem.template-literals/index.ts
@@ -8,5 +8,3 @@
 
 // 🐨 Log a math problem like "10 times 5 equals 50"
 // 💰 Use ${10 * 5} for the result
-
-export {}
diff --git a/exercises/01.expressions-and-output/04.solution.template-literals/index.ts b/exercises/01.expressions-and-output/04.solution.template-literals/index.ts
@@ -6,5 +6,3 @@ console.log(`The answer is ${40 + 2}`)
 console.log(`Hello, TypeScript!`)
 
 console.log(`10 times 5 equals ${10 * 5}`)
-
-export {}
diff --git a/exercises/02.variables/01.problem.let-and-const/index.ts b/exercises/02.variables/01.problem.let-and-const/index.ts
@@ -24,5 +24,3 @@ const laptopPrice = 999.99
 console.log('Cart subtotal:', cartTotal)
 // console.log('Tax:', cartTotal * TAX_RATE)
 // console.log('Final total:', finalTotal)
-
-export {}
diff --git a/exercises/02.variables/02.problem.reassignment-vs-mutation/index.ts b/exercises/02.variables/02.problem.reassignment-vs-mutation/index.ts
@@ -20,5 +20,3 @@ console.log('Modified list:', shoppingList)
 // 🦉 Key insight: const prevents reassignment, not mutation!
 // The variable shoppingList always points to the SAME array,
 // but the contents of that array can change.
-
-export {}
diff --git a/exercises/03.primitive-types/01.problem.numbers-and-strings/index.ts b/exercises/03.primitive-types/01.problem.numbers-and-strings/index.ts
@@ -22,4 +22,3 @@ console.log('Quantity:', quantity)
 console.log('Description:', description)
 
 // 🦺 This line ensures TypeScript treats this as a module
-export {}
diff --git a/exercises/03.primitive-types/02.problem.booleans-and-comparisons/index.ts b/exercises/03.primitive-types/02.problem.booleans-and-comparisons/index.ts
@@ -23,5 +23,3 @@ console.log('Is On Sale:', isOnSale)
 console.log('Has Discount:', hasDiscount)
 // @ts-expect-error - 💣 remove this comment
 console.log('Can Purchase:', canPurchase)
-
-export {}
diff --git a/exercises/03.primitive-types/03.problem.null-and-undefined/index.ts b/exercises/03.primitive-types/03.problem.null-and-undefined/index.ts
@@ -16,5 +16,3 @@
 // If it does, log "Last purchase: [date]"
 // If not, log "No previous purchases"
 // 💰 Use: if (lastPurchaseDate !== null)
-
-export {}
diff --git a/exercises/03.primitive-types/04.problem.bigint-and-symbol/index.ts b/exercises/03.primitive-types/04.problem.bigint-and-symbol/index.ts
@@ -24,5 +24,3 @@
 // console.log('userId:', userId)
 // console.log('anotherId:', anotherId)
 // console.log('Are symbols equal?', areEqual) // false
-
-export {}
diff --git a/exercises/04.control-flow/01.problem.conditionals/index.ts b/exercises/04.control-flow/01.problem.conditionals/index.ts
@@ -19,5 +19,3 @@ const score: number = 85
 // console.log(`Score: ${score}`)
 // console.log(`Grade: ${grade}`)
 // console.log(`Passed: ${passed}`)
-
-export {}
diff --git a/exercises/04.control-flow/02.problem.loops/index.ts b/exercises/04.control-flow/02.problem.loops/index.ts
@@ -18,5 +18,3 @@ const prices: Array<number> = [29.99, 9.99, 49.99, 4.99, 19.99]
 
 // console.log(`Total: $${total.toFixed(2)}`)
 // console.log(`Expensive items (>$10): ${expensiveItemCount}`)
-
-export {}
diff --git a/exercises/04.control-flow/03.problem.for-of-iteration/index.ts b/exercises/04.control-flow/03.problem.for-of-iteration/index.ts
@@ -20,5 +20,3 @@ const prices: Array<number> = [29.99, 9.99, 49.99, 4.99, 19.99]
 // console.log(`Total: $${total.toFixed(2)}`)
 // console.log(`Average: $${average.toFixed(2)}`)
 // console.log(`Highest: $${highestPrice.toFixed(2)}`)
-
-export {}
diff --git a/exercises/05.functions/01.problem.parameters-and-returns/index.ts b/exercises/05.functions/01.problem.parameters-and-returns/index.ts
@@ -20,5 +20,3 @@
 // console.log(calculateTax(100, 0.08)) // 8
 // console.log(formatPrice(1999)) // "$19.99"
 // console.log(applyDiscount(100, 20)) // 80
-
-export {}
diff --git a/exercises/05.functions/02.problem.type-inference/index.ts b/exercises/05.functions/02.problem.type-inference/index.ts
@@ -29,5 +29,3 @@ console.log(multiply(4, 5)) // 20
 console.log(divide(10, 2)) // 5
 // console.log(isEven(4)) // true
 // console.log(isEven(7)) // false
-
-export {}
diff --git a/exercises/05.functions/03.problem.explicit-return-types/index.ts b/exercises/05.functions/03.problem.explicit-return-types/index.ts
@@ -18,5 +18,3 @@
 // console.log(parseAge('25')) // 25
 // console.log(isValidEmail('test@example.com')) // true
 // console.log(isValidEmail('invalid-email')) // false
-
-export {}
diff --git a/exercises/06.void-and-never/01.problem.void-functions/index.ts b/exercises/06.void-and-never/01.problem.void-functions/index.ts
@@ -14,5 +14,3 @@
 // logInfo('Application started')
 // logError('Connection failed')
 // logWithTimestamp('User logged in')
-
-export {}
diff --git a/exercises/06.void-and-never/02.problem.never-type/index.ts b/exercises/06.void-and-never/02.problem.never-type/index.ts
@@ -39,5 +39,3 @@ function getStatusMessage(status: Status): string {
 console.log(getStatusMessage('pending'))
 // console.log(getStatusMessage('success'))
 // console.log(getStatusMessage('error'))
-
-export {}
diff --git a/tsconfig.json b/tsconfig.json
@@ -9,6 +9,6 @@
 		"noEmit": true,
 		"allowImportingTsExtensions": true
 	},
-	"include": ["**/*.ts", "**/*.tsx"],
+	"include": ["**/*.ts", "**/*.tsx", "playground/**/*.ts"],
 	"exclude": ["node_modules", "**/node_modules"]
 }
