chore: Enable typescript --rewriteRelativeImportExtensions

Author: eemeli

config/rollup.node-config.mjs

@@ -1,4 +1,33 @@
 import typescript from '@rollup/plugin-typescript'
+import * as ts from 'typescript'
+
+/**
+ * Strip out TS relative import path rewrite helper from dynamic import() calls
+ *
+ * Required due to
+ * https://github.com/rollup/plugins/issues/1820
+ *
+ * @param {ts.TransformationContext} context
+ */
+function fixDynamicImportRewrite(context) {
+  /** @param {ts.SourceFile} source */
+  return function fixDynamicImport(source) {
+    /** @param {ts.Node} node */
+    function visitor(node) {
+      if (
+        ts.isCallExpression(node) &&
+        ts.isIdentifier(node.expression) &&
+        String(node.expression.escapedText) ===
+          '___rewriteRelativeImportExtension' &&
+        node.arguments.length === 1
+      ) {
+        return node.arguments[0]
+      }
+      return ts.visitEachChild(node, visitor, context)
+    }
+    return ts.visitNode(source, visitor)
+  }
+}
 
 export default [
   {
@@ -20,6 +49,8 @@ export default [
     input: 'src/cli.ts',
     output: { file: 'dist/cli.mjs' },
     external: () => true,
-    plugins: [typescript()]
+    plugins: [
+      typescript({ transformers: { after: [fixDynamicImportRewrite] } })
+    ]
   }
 ]

eslint.config.mjs

@@ -38,6 +38,17 @@ export default [
       'no-control-regex': 'off',
       'no-fallthrough': ['error', { commentPattern: 'fallthrough' }],
       'no-implicit-globals': 'error',
+      'no-restricted-imports': [
+        'error',
+        {
+          patterns: [
+            {
+              regex: '^\\..*(?<!\\.ts)$',
+              message: 'Relative imports must use .ts extension.'
+            }
+          ]
+        }
+      ],
       'no-template-curly-in-string': 'warn',
       'no-var': 'error',
       'prefer-const': ['warn', { destructuring: 'all' }],

tsconfig.json

@@ -6,6 +6,7 @@
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "outDir": "dist",
+    "rewriteRelativeImportExtensions": true,
     "rootDir": "src",
     "strict": true,
     "target": "ES2020",