Merge branch 'feat/infer-alias-from-tsconfig' of github.com:kricsleo/unbuild into feat/infer-alias-from-tsconfig

Author: kricsleo

src/builders/rollup/config.ts

@@ -15,7 +15,9 @@ import { cjsPlugin } from "./plugins/cjs";
 import { shebangPlugin } from "./plugins/shebang";
 import { DEFAULT_EXTENSIONS, getChunkFilename, resolveAliases } from "./utils";
 
-export async function getRollupOptions(ctx: BuildContext): Promise<RollupOptions> {
+export async function getRollupOptions(
+  ctx: BuildContext,
+): Promise<RollupOptions> {
   const _aliases = await resolveAliases(ctx);
   return (<RollupOptions>{
     input: Object.fromEntries(

src/builders/rollup/stub.ts

@@ -15,7 +15,7 @@ export async function rollupStub(ctx: BuildContext): Promise<void> {
     {
       ...ctx.options.stubOptions.jiti,
       alias: {
-        ...await resolveAliases(ctx),
+        ...(await resolveAliases(ctx)),
         ...ctx.options.stubOptions.jiti.alias,
       },
       transformOptions: {

src/builders/rollup/utils.ts

@@ -1,4 +1,4 @@
-import { dirname, resolve } from 'pathe'
+import { dirname, resolve } from "pathe";
 import type { PreRenderedChunk } from "rollup";
 import type { BuildContext } from "../../types";
 
@@ -14,7 +14,9 @@ export const DEFAULT_EXTENSIONS: string[] = [
   ".json",
 ];
 
-export async function resolveAliases(ctx: BuildContext): Promise<Record<string, string>> {
+export async function resolveAliases(
+  ctx: BuildContext,
+): Promise<Record<string, string>> {
   const aliases: Record<string, string> = {
     [ctx.pkg.name!]: ctx.options.rootDir,
     ...ctx.options.alias,
@@ -42,52 +44,65 @@ export async function resolveAliases(ctx: BuildContext): Promise<Record<string,
    * REVIEW: This makes alias resolution asynchronous (which is contagious),
    * because we are dynamic loading TypeScript (cause it's a peer dependency), 
    * or we can use a synchronous alternative [get-tsconfig](https://github.com/privatenumber/get-tsconfig).
-   * 
+   *
    * Additionally, do we need a flag to explicitly enable this feature?
    */
-  const tsconfigAliases = await tryInferTsconfigAliases()
-  if(tsconfigAliases) {
-    Object.assign(aliases, tsconfigAliases)
+  const tsconfigAliases = await tryInferTsconfigAliases();
+  if (tsconfigAliases) {
+    Object.assign(aliases, tsconfigAliases);
   }
 
   return aliases;
 }
 
-async function tryInferTsconfigAliases(): Promise<Record<string, string> | null> {
-  const ts = await import('typescript').catch(() => null)
+async function tryInferTsconfigAliases(): Promise<Record<
+  string,
+  string
+> | null> {
+  const ts = await import("typescript").catch(() => null);
 
-  if(!ts) {
-    return null
+  if (!ts) {
+    return null;
   }
 
-  const tsconfigPath = ts.findConfigFile(process.cwd(), ts.sys.fileExists, 'tsconfig.json')
+  const tsconfigPath = ts.findConfigFile(
+    process.cwd(),
+    ts.sys.fileExists,
+    "tsconfig.json",
+  );
 
-  if(!tsconfigPath)  {
-    return null
+  if (!tsconfigPath) {
+    return null;
   }
 
-  const tsconfigDir = dirname(tsconfigPath)
-  const { config: rawTsconfig } = ts.readConfigFile(tsconfigPath, ts.sys.readFile)
-  const { options: tsconfig } = ts.parseJsonConfigFileContent(rawTsconfig, ts.sys, tsconfigDir)
+  const tsconfigDir = dirname(tsconfigPath);
+  const { config: rawTsconfig } = ts.readConfigFile(
+    tsconfigPath,
+    ts.sys.readFile,
+  );
+  const { options: tsconfig } = ts.parseJsonConfigFileContent(
+    rawTsconfig,
+    ts.sys,
+    tsconfigDir,
+  );
 
-  if(!tsconfig.paths) {
-    return null
+  if (!tsconfig.paths) {
+    return null;
   }
 
-  const resolvedBaseUrl = resolve(tsconfigDir, tsconfig.baseUrl || '.');
+  const resolvedBaseUrl = resolve(tsconfigDir, tsconfig.baseUrl || ".");
 
   const aliases = Object.fromEntries(
-    Object.entries(tsconfig.paths)
-      .map(([pattern, substitutions]) => {
-        const find = pattern.replace(/\/\*$/, '')
-        // Pick only the first path.
-        const replacement = substitutions[0].replace(/\*$/, '')
-        const resolvedReplacement = resolve(resolvedBaseUrl, replacement)
-        return [find, resolvedReplacement]
-      })
-  )
+    Object.entries(tsconfig.paths).map(([pattern, substitutions]) => {
+      const find = pattern.replace(/\/\*$/, "");
+      // Pick only the first path.
+      const replacement = substitutions[0].replace(/\*$/, "");
+      const resolvedReplacement = resolve(resolvedBaseUrl, replacement);
+      return [find, resolvedReplacement];
+    }),
+  );
 
-  return aliases
+  return aliases;
 }
 
 export function getChunkFilename(