message: Fix some TS lint complaints
diff: @@ -23,9 +23,9 @@ exports.serveCodeSnippet = () => async (req, res, next) => {
  .find(new RegExp(`vuln-code-snippet start.*${challenge.key}`))
  if (matches[0]) { // TODO Currently only a single source file is supported
  const source = fs.readFileSync(path.resolve(matches[0].path), 'utf8')
  - let snippet = source.match(`[/#]{0,2} vuln-code-snippet start.*${challenge.key}([^])*vuln-code-snippet end.*${challenge.key}`)
  - if (snippet != null) {
  - snippet = snippet[0] // TODO Currently only a single code snippet is supported
  + const snippets = source.match(`[/#]{0,2} vuln-code-snippet start.*${challenge.key}([^])*vuln-code-snippet end.*${challenge.key}`)
  + if (snippets != null) {
  + let snippet = snippets[0] // TODO Currently only a single code snippet is supported
  snippet = snippet.replace(/[/#]{0,2} vuln-code-snippet start.*[\r\n]{0,2}/g, '')
  snippet = snippet.replace(/[/#]{0,2} vuln-code-snippet end.*/g, '')
  snippet = snippet.replace(/.*[/#]{0,2} vuln-code-snippet hide-line[\r\n]{0,2}/g, '')
  