feat: add getResolveAgainstDir option to runTransform

Author: jedwards1211

src/node/AstxWorker.ts

@@ -55,6 +55,7 @@ export default class AstxWorker {
     source,
     transform,
     transformFile,
+    getResolveAgainstDir,
     config,
     signal,
   }: RunTransformOnFileOptions): Promise<IpcTransformResult> {
@@ -92,6 +93,7 @@ export default class AstxWorker {
         file,
         transform: transformFile ? undefined : transform,
         transformFile,
+        resolveAgainstDir: getResolveAgainstDir?.(),
         ...(source && { source }),
         ...(config && { config }),
       })

src/node/AstxWorkerEntry.ts

@@ -17,10 +17,21 @@ parentPort.on('message', async (message: any) => {
       return
     }
     case 'runTransformOnFile': {
-      const { seq, file, source, transform, transformFile, config } =
-        message as RunTransformOnFileOptions & {
-          seq: number
-        }
+      const {
+        seq,
+        file,
+        source,
+        transform,
+        transformFile,
+        resolveAgainstDir,
+        getResolveAgainstDir = resolveAgainstDir
+          ? () => resolveAgainstDir
+          : undefined,
+        config,
+      } = message as RunTransformOnFileOptions & {
+        seq: number
+        resolveAgainstDir?: string
+      }
       let result
       try {
         const abortController = new AbortController()
@@ -31,6 +42,7 @@ parentPort.on('message', async (message: any) => {
           source,
           transform,
           transformFile,
+          getResolveAgainstDir,
           config,
           signal,
           forWorker: true,

src/node/runTransform.ts

@@ -22,6 +22,7 @@ export type RunTransformOptions = {
   gitignore?: Gitignore | null
   transform?: Transform
   transformFile?: string
+  getResolveAgainstDir?: () => string
   paths?: readonly string[]
   exclude?: string
   cwd?: string
@@ -34,6 +35,7 @@ export default async function* runTransform({
   gitignore,
   transform: _transform,
   transformFile,
+  getResolveAgainstDir,
   paths: _paths,
   exclude,
   fs,
@@ -84,6 +86,7 @@ export default async function* runTransform({
         transformed = await runTransformOnFile({
           file,
           transform,
+          getResolveAgainstDir,
           config,
           signal,
           fs,

src/node/runTransformOnFile.ts

@@ -49,6 +49,7 @@ export type RunTransformOnFileOptions = {
   source?: string
   transform?: Transform
   transformFile?: string
+  getResolveAgainstDir?: () => string
   config?: Partial<AstxConfig>
   signal?: AbortSignal
   forWorker?: boolean
@@ -58,6 +59,8 @@ export type RunTransformOnFileOptions = {
 export default async function runTransformOnFile({
   transform: _transform,
   transformFile,
+  getResolveAgainstDir = () =>
+    transformFile ? Path.dirname(transformFile) : process.cwd(),
   config: configOverrides,
   file,
   source,
@@ -67,8 +70,6 @@ export default async function runTransformOnFile({
 }: RunTransformOnFileOptions): Promise<TransformResult> {
   // might try using callsites for this in the future in case a transform
   // script is broken up into multiple files
-  const getResolveAgainstDir = () =>
-    transformFile ? Path.dirname(transformFile) : process.cwd()
 
   const transform: Transform = transformFile
     ? await importTransformFile(transformFile)