chore: update examples to use TLA

Author: mstoykov

examples/experimental/csv-parse.js

@@ -7,16 +7,10 @@ export const options = {
 }
 
 // Open the csv file, and parse it ahead of time.
-let file;
-let csvRecords;
-(async function () {
-	file = await open('data.csv');
-
-	// The `csv.parse` function consumes the entire file at once, and returns
-	// the parsed records as a SharedArray object.
-	csvRecords = await csv.parse(file, {delimiter: ','})
-})();
-
+const file = await open('data.csv');
+// The `csv.parse` function consumes the entire file at once, and returns
+// the parsed records as a SharedArray object.
+const csvRecords = await csv.parse(file, { delimiter: ',' })
 
 export default async function() {
 	// The csvRecords a SharedArray. Each element is a record from the CSV file, represented as an array

examples/experimental/csv-parser.js

@@ -5,20 +5,16 @@ export const options = {
 	iterations: 10,
 }
 
-let file;
-let parser;
-(async function () {
-	file = await open('data.csv');
-	parser = new csv.Parser(file);
-})();
+const file = await open('data.csv');;
+const parser = new csv.Parser(file);;
 
 export default async function() {
 	// The parser `next` method attempts to read the next row from the CSV file.
 	//
 	// It returns an iterator-like object with a `done` property that indicates whether
 	// there are more rows to read, and a `value` property that contains the row fields
 	// as an array.
-	const {done, value} = await parser.next();
+	const { done, value } = await parser.next();
 	if (done) {
 		throw new Error("No more rows to read");
 	}

examples/experimental/fs/fs.js

@@ -5,16 +5,11 @@ export const options = {
 	iterations: 1000,
 };
 
-// k6 doesn't support async in the init context. We use a top-level async function for `await`.
-//
 // Each Virtual User gets its own `file` copy.
 // So, operations like `seek` or `read` won't impact other VUs.
-let file;
-(async function () {
-	file = await open("bonjour.txt");
-})();
+const file = await open("bonjour.txt");
 
-export default async function () {
+export default async function() {
 	// About information about the file
 	const fileinfo = await file.stat();
 	if (fileinfo.name != "bonjour.txt") {