chore: add missing use strict directives (fastify#5106)

Author: Fdawgs

examples/use-plugin.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const fastify = require('../fastify')({ logger: true })
 
 const opts = {

integration/server.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const Fastify = require('../fastify')
 
 const fastify = Fastify()

test/buffer.test.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const t = require('tap')
 const test = t.test
 const Fastify = require('..')

test/bundler/esbuild/src/fail-plugin-version.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const fp = require('fastify-plugin')
 const fastify = require('../../../../')()
 

test/bundler/esbuild/src/index.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const fastify = require('../../../../')()
 // Declare a route
 fastify.get('/', function (request, reply) {

test/bundler/webpack/src/fail-plugin-version.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const fp = require('fastify-plugin')
 const fastify = require('../../../../')()
 

test/bundler/webpack/src/index.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const fastify = require('../../../../')()
 // Declare a route
 fastify.get('/', function (request, reply) {

test/bundler/webpack/webpack.config.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const path = require('node:path')
 
 module.exports = {