It appears that the repository has undergone several changes and renamings:

backend/node_modules/tailwindcss/src/cli-peer-dependencies.js

@@ -1,15 +0,0 @@
-export function lazyPostcss() {
-  return require('postcss')
-}
-
-export function lazyPostcssImport() {
-  return require('postcss-import')
-}
-
-export function lazyAutoprefixer() {
-  return require('autoprefixer')
-}
-
-export function lazyCssnano() {
-  return require('cssnano')
-}