Merge pull request #514 from xmtp/rygine/rollup

Replace `tsup` with `rollup`

.eslintignore

@@ -1,5 +1,3 @@
-*.config.js
-*.config.ts
 *.test.js
 *.test.ts
 dist

.gitignore

@@ -125,3 +125,6 @@ tmp/
 
 # Benchmark results
 bench/results
+
+# rollup build plugin output
+build/rollup-plugin-resolve-extensions/index.js

.prettierignore

@@ -2,3 +2,4 @@ dist
 coverage
 docs
 tmp
+build/rollup-plugin-resolve-extensions/index.js

build/rollup-plugin-resolve-extensions/index.ts

@@ -0,0 +1,43 @@
+import { basename, dirname, extname, format } from 'node:path'
+import { existsSync } from 'node:fs'
+import { Plugin } from 'rollup'
+import { getResolvedPath, loadCompilerOptions } from '../utils'
+
+export const resolveExtensions = (
+  extensions: string[] = [],
+  tsconfigPath?: string
+): Plugin => {
+  const compilerOptions = loadCompilerOptions(tsconfigPath)
+  return {
+    name: 'resolve-extensions',
+    async resolveId(source, importer, options) {
+      if (extensions.length && !options.isEntry && importer) {
+        const resolvedPath = getResolvedPath(source, importer, compilerOptions)
+        let updatedSource = ''
+
+        if (resolvedPath) {
+          const ext = extname(resolvedPath)
+          const base = basename(resolvedPath, ext)
+          const dir = dirname(resolvedPath)
+          // check for extensions
+          extensions.some((extension) => {
+            const newPath = format({
+              dir,
+              name: base,
+              ext: `${extension}${ext}`,
+            })
+            const exists = existsSync(newPath)
+            if (exists) {
+              updatedSource = newPath
+              return true
+            }
+            return false
+          })
+
+          return updatedSource || null
+        }
+      }
+      return null
+    },
+  }
+}