Remove unnecessary notes about exports in string and number exercises; update README to clarify variable exporting for upcoming exercises.

Author: kentcdodds

exercises/01.expressions-and-output/02.problem.escaping-strings/README.mdx

@@ -49,9 +49,4 @@ console.log('Name:\tKody') // Prints with a tab between
 💰 Remember: use `\'` to escape single quotes, `\"` to escape double quotes,
 `\n` for newlines, and `\t` for tabs!
 
-<callout-info>
-	The playground also prints some extra output from `@kentcdodds/log-module`.
-	That's normal and not part of your `console.log()` calls.
-</callout-info>
-
 📜 [Escape sequences on MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#escape_sequences)

exercises/01.expressions-and-output/02.problem.escaping-strings/index.ts

@@ -12,5 +12,3 @@
 
 // 🐨 Log tab-separated data: Name: [tab] Age: [tab] City: (like column headers)
 // 💰 Use \t to create tabs between words
-
-// 🐨 No exports needed for this exercise

exercises/01.expressions-and-output/03.problem.strings/index.ts

@@ -7,5 +7,3 @@
 
 // 🐨 Log a sentence by concatenating multiple strings
 // 💰 Example: "I" + " " + "am" + " " + "learning" + " " + "to" + " " + "code"
-
-// 🐨 No exports needed for this exercise

exercises/01.expressions-and-output/04.problem.numbers/index.ts

@@ -9,5 +9,3 @@
 
 // 🐨 Use console.log to show the result of (10 + 5) multiplied by 2
 // 💰 Use parentheses to control order of operations
-
-// 🐨 No exports needed for this exercise

exercises/01.expressions-and-output/05.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
-
-// 🐨 No exports needed for this exercise

exercises/02.variables/01.problem.let-and-const/README.mdx

@@ -18,3 +18,7 @@ const API_URL = 'https://api.example.com'
 ```
 
 📜 [MDN - const](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const)
+
+<callout-info>
+	This is the first exercise where you'll be exporting values for the tests!
+</callout-info>

exercises/02.variables/README.mdx

@@ -55,3 +55,27 @@ Understanding this distinction helps you write predictable, bug-free code.
 
 📜 For more details, see MDN's guide on [variable
 declarations](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Grammar_and_types#declarations).
+
+## Exporting Variables
+
+In this and future exercises, you'll be required to see the `export`
+variables. This makes the variable available to other files. It's how the app
+displays your values and how tests verify your solutions. For now, just know
+that `export` shares your variable with the outside world.
+
+Example of exporting a single variable:
+
+```ts
+export const FAVORITE_COLOR = 'blue'
+```
+
+Example of exporting multiple variables:
+
+```ts
+const FAVORITE_COLOR = 'blue'
+let currentAge = 25
+
+export { FAVORITE_COLOR, currentAge }
+```
+
+We'll cover modules in depth later in the workshop series.