Remove sourceMaps (#126)

scripts/prepare-swagger-ui.js

@@ -16,16 +16,21 @@ const filesToCopy = [
   'index.css',
   'oauth2-redirect.html',
   'swagger-ui-bundle.js',
-  'swagger-ui-bundle.js.map',
   'swagger-ui-standalone-preset.js',
-  'swagger-ui-standalone-preset.js.map',
   'swagger-ui.css',
-  'swagger-ui.css.map',
-  'swagger-ui.js',
-  'swagger-ui.js.map'
+  'swagger-ui.js'
 ]
 filesToCopy.forEach(filename => {
-  fse.copySync(`${swaggerUiAssetPath}/${filename}`, resolve(`./static/${filename}`))
+  fse.ensureFileSync(resolve(`./static/${filename}`))
+  const readableStream = fs.createReadStream(`${swaggerUiAssetPath}/${filename}`, 'utf8')
+  const writableStream = fs.createWriteStream(resolve(`./static/${filename}`))
+  // Matches sourceMappingURL comments in .js and .css files
+  const sourceMapRegex = new RegExp(String.raw`\/.# sourceMappingURL=${filename}.map(\*\/)?$`)
+
+  readableStream.on('data', (chunk) => {
+    // Copy file while removing sourceMappingURL comments
+    writableStream.write(chunk.replace(sourceMapRegex, ''))
+  })
 })
 
 const overrides = [

test/prepare.test.js

@@ -0,0 +1,38 @@
+'use strict'
+
+const { test } = require('tap')
+const Fastify = require('fastify')
+const fastifySwagger = require('@fastify/swagger')
+const fastifySwaggerUi = require('../index')
+
+test('Swagger source does not contain sourceMaps', async (t) => {
+  t.plan(2)
+  const fastify = Fastify()
+  await fastify.register(fastifySwagger)
+  await fastify.register(fastifySwaggerUi)
+
+  const res = await fastify.inject({
+    method: 'GET',
+    url: '/documentation/static/swagger-ui.js'
+  })
+
+  const includesSourceMap = res.payload.includes('sourceMappingURL')
+  t.equal(includesSourceMap, false)
+  t.equal(res.headers['content-type'], 'application/javascript; charset=UTF-8')
+})
+
+test('Swagger css does not contain sourceMaps', async (t) => {
+  t.plan(2)
+  const fastify = Fastify()
+  await fastify.register(fastifySwagger)
+  await fastify.register(fastifySwaggerUi)
+
+  const res = await fastify.inject({
+    method: 'GET',
+    url: '/documentation/static/swagger-ui.css'
+  })
+
+  const includesSourceMap = res.payload.includes('sourceMappingURL')
+  t.equal(includesSourceMap, false)
+  t.equal(res.headers['content-type'], 'text/css; charset=UTF-8')
+})