part 2 done

src/transactions.ts

@@ -20,31 +20,35 @@ const transactions: Transaction[] = [
 // example:
 // filterIncomeTransactions(transactions); // => [["income", 1000], ["income", 1500], ["income", 700]]
 function filterIncomeTransactions(transactions: Transaction[]): Transaction[] {
-  // write your code here...
+  let onI = transactions.filter((a) => a.includes("income"));
 
-  return []; // replace empty array with what you see is fit
+  return onI; // replace empty array with what you see is fit
 }
+console.log(filterIncomeTransactions(transactions));
 
 // `filterExpenseTransactions` function that:
 // - Accepts a "transactions" parameter of type "Transaction[]".
 // - Return a new array containing only the expense transactions.
 // example:
 // filterExpenseTransactions(transactions); // => [["expense", 500], ["expense", 300]]
 function filterExpenseTransactions(transactions: Transaction[]): Transaction[] {
-  // write your code here...
+  let onE = transactions.filter((b) => b.includes("expense"));
 
-  return []; // replace empty array with what you see is fit
+  return onE; // replace empty array with what you see is fit
 }
-
+console.log(filterExpenseTransactions(transactions));
 // `calculateTotalIncome` function that:
 // - Accepts a "transactions" parameter of type "Transaction[]".
 // - calculates the total income and returns it.
 // example:
 // calculateTotalIncome(transactions); // => 3200  (1000 + 1500 + 700)
 function calculateTotalIncome(transactions: Transaction[]): number {
-  // write your code here...
+  let calI = transactions
+    .filter((c) => c.includes("income"))
+    .map((c) => 1)
+    .reduce((sum, amount) => sum + amount, 0);
 
-  return -1; // replace -1 with what you see is fit
+  return calI; // replace -1 with what you see is fit
 }
 
 // `calculateTotalExpenses` function that:
@@ -53,22 +57,33 @@ function calculateTotalIncome(transactions: Transaction[]): number {
 // example:
 // calculateTotalExpenses(transactions); // => 800  (500 + 300)
 function calculateTotalExpenses(transactions: Transaction[]): number {
-  // write your code here...
+  let calcE = transactions
+    .filter((d) => d.includes("expense"))
+    .map((d) => 1)
+    .reduce((sum, amount) => sum + amount, 0);
 
-  return -1; // replace -1 with what you see is fit
+  return calcE; // replace -1 with what you see is fit
 }
-
+console.log(calculateTotalExpenses(transactions));
 // `calculateNetTotal` function that:
 // - Accepts a "transactions" parameter of type "Transaction[]".
 // - calculates the net total (total income - total expenses) and returns it.
 // example:
 // calculateNetTotal(transactions); // => 2400  (3200 - 800)
 function calculateNetTotal(transactions: Transaction[]): number {
-  // write your code here...
+  let neti = transactions
+    .filter((n) => n.includes("income"))
+    .map((n) => 1)
+    .reduce((sum, amount) => sum + amount, 0);
+  let nete = transactions
+    .filter((ne) => ne.includes("expense"))
+    .map((ne) => 1)
+    .reduce((sum, amount) => sum + amount, 0);
+  let netTotal = neti + nete;
 
-  return -1; // replace -1 with what you see is fit
+  return netTotal; // replace -1 with what you see is fit
 }
-
+console.log(calculateNetTotal(transactions));
 // `filterSignificantTransactions` function that:
 // - Accepts 2 parameters:
 // - a "transactions" parameter of type "Transaction[]".
@@ -80,9 +95,7 @@ function filterSignificantTransactions(
   transactions: Transaction[],
   threshold: number
 ): Transaction[] {
-  // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  return transactions.filter((k) => k[1] >= threshold); // replace empty array with what you see is fit
 }
 
 export {