We are done with the transition

rollup.config.js

@@ -1,138 +0,0 @@
-import resolve from 'rollup-plugin-node-resolve'
-import replace from 'rollup-plugin-replace'
-import commonjs from 'rollup-plugin-commonjs'
-import svelte from 'rollup-plugin-svelte'
-import babel from 'rollup-plugin-babel'
-import { terser } from 'rollup-plugin-terser'
-import config from 'sapper/config/rollup.js'
-import pkg from './package.json'
-import svg from 'rollup-plugin-svg'
-import sveltePreprocess from 'svelte-preprocess'
-import typescript from '@rollup/plugin-typescript'
-
-const mode = process.env.NODE_ENV
-const dev = mode === 'development'
-const legacy = !!process.env.SAPPER_LEGACY_BUILD
-
-const onwarn = (warning, onwarn) =>
-  (warning.code === 'MISSING_EXPORT' && /'preload'/.test(warning.message)) ||
-  (warning.code === 'CIRCULAR_DEPENDENCY' &&
-    /[/\\]@sapper[/\\]/.test(warning.message)) ||
-  onwarn(warning)
-const dedupe = (importee) =>
-  importee === 'svelte' || importee.startsWith('svelte/')
-
-export default {
-  client: {
-    input: config.client.input().replace(/\.js$/, '.ts'),
-    output: config.client.output(),
-    plugins: [
-      replace({
-        'process.browser': true,
-        'process.env.NODE_ENV': JSON.stringify(mode),
-      }),
-      svelte({
-        compilerOptions: {
-          dev,
-          hydratable: true,
-        },
-        emitCss: true,
-        preprocess: sveltePreprocess({
-          sourceMap: dev,
-          defaults: {
-            script: 'typescript',
-          },
-        }),
-      }),
-      resolve({
-        browser: true,
-        dedupe,
-      }),
-      commonjs(),
-      svg(),
-
-      legacy &&
-        babel({
-          extensions: ['.js', '.mjs', '.html', '.svelte'],
-          runtimeHelpers: true,
-          exclude: ['node_modules/@babel/**'],
-          presets: [
-            [
-              '@babel/preset-env',
-              {
-                targets: '> 0.25%, not dead',
-              },
-            ],
-          ],
-          plugins: [
-            '@babel/plugin-syntax-dynamic-import',
-            [
-              '@babel/plugin-transform-runtime',
-              {
-                useESModules: true,
-              },
-            ],
-          ],
-        }),
-
-      !dev &&
-        terser({
-          module: true,
-        }),
-    ],
-
-    onwarn,
-  },
-
-  server: {
-    input: config.server.input().server.replace(/\.js$/, '.ts'),
-    output: config.server.output(),
-    plugins: [
-      replace({
-        'process.browser': false,
-        'process.env.NODE_ENV': JSON.stringify(mode),
-      }),
-      svelte({
-        compilerOptions: {
-          generate: 'ssr',
-          dev,
-          hydratable: true,
-        },
-        preprocess: sveltePreprocess({
-          sourceMap: dev,
-          defaults: {
-            script: 'typescript',
-          },
-        }),
-      }),
-      resolve({
-        dedupe,
-      }),
-      commonjs(),
-      typescript({ sourceMap: dev }),
-      svg(),
-    ],
-    external: Object.keys(pkg.dependencies).concat(
-      require('module').builtinModules ||
-        Object.keys(process.binding('natives'))
-    ),
-
-    onwarn,
-  },
-
-  serviceworker: {
-    input: config.serviceworker.input(),
-    output: config.serviceworker.output(),
-    plugins: [
-      resolve(),
-      replace({
-        'process.browser': true,
-        'process.env.NODE_ENV': JSON.stringify(mode),
-      }),
-      commonjs(),
-      !dev && terser(),
-    ],
-
-    onwarn,
-  },
-}