fix: dont mangle passed tsconfig on bundle & cleanup on error

Author: Floffah

src/lib/generateBundle.ts

@@ -29,7 +29,7 @@ export function generateBundle(
     entryPoints: string[],
     compilerOptions: ts.CompilerOptions,
     tsconfigPath?: string,
-    originalConfig: any = {},
+    originalConfig?: any,
 ) {
     const commonOutDir = getHighestCommonDirectory(entryPoints);
 
@@ -39,46 +39,60 @@ export function generateBundle(
     const postbundleOutDir = resolve(compilerOptions.declarationDir!, "..");
 
     let shouldDeleteTsConfig = false;
-    if (!tsconfigPath) {
-        const tempid = randomBytes(20).toString("hex");
+    if (!tsconfigPath && originalConfig) {
+        const tempid = randomBytes(6).toString("hex");
 
         tsconfigPath = resolve(process.cwd(), `tsconfig.${tempid}.json`);
 
+        console.log(originalConfig)
         writeFileSync(
             tsconfigPath,
             JSON.stringify({
                 ...originalConfig,
-                compilerOptions,
+                compilerOptions: {
+                    ...originalConfig.compilerOptions,
+                    declaration: true,
+                    emitDeclarationOnly: true,
+                    declarationDir: postbundleOutDir,
+                },
                 include: entryPoints,
             }),
         );
 
         shouldDeleteTsConfig = true;
     }
 
-    const bundles = generateDtsBundle(
-        relativeDeclarationPaths.map((path) => ({
-            filePath: resolve(compilerOptions.declarationDir!, path),
-        })),
-        {
-            preferredConfigPath: tsconfigPath,
-        },
-    );
+    try {
+        const bundles = generateDtsBundle(
+            relativeDeclarationPaths.map((path) => ({
+                filePath: resolve(compilerOptions.declarationDir!, path),
+            })),
+            {
+                preferredConfigPath: tsconfigPath,
+            },
+        );
 
-    for (let i = 0; i < bundles.length; i++) {
-        const bundle = bundles[i];
-        const originalPath = relativeDeclarationPaths[i];
+        for (let i = 0; i < bundles.length; i++) {
+            const bundle = bundles[i];
+            const originalPath = relativeDeclarationPaths[i];
 
-        const outputPath = resolve(postbundleOutDir, originalPath);
+            const outputPath = resolve(postbundleOutDir, originalPath);
 
-        writeFileSync(outputPath, bundle);
-    }
+            writeFileSync(outputPath, bundle);
+        }
 
-    if (compilerOptions.declarationDir!.endsWith("dts-prebundle")) {
-        rmSync(compilerOptions.declarationDir!, { recursive: true });
-    }
+        if (compilerOptions.declarationDir!.endsWith("dts-prebundle")) {
+            rmSync(compilerOptions.declarationDir!, { recursive: true });
+        }
+
+        if (shouldDeleteTsConfig && tsconfigPath) {
+            rmSync(tsconfigPath);
+        }
+    } catch (e) {
+        if (shouldDeleteTsConfig && tsconfigPath) {
+            rmSync(tsconfigPath);
+        }
 
-    if (shouldDeleteTsConfig) {
-        rmSync(tsconfigPath);
+        throw e;
     }
 }

tests/bundle/__snapshots__/bundle.test.ts.snap

@@ -19,3 +19,13 @@ export declare function c(): string;
 export {};
 "
 `;
+
+exports[`Pass tsconfig as object 1`] = `
+"// Generated by dts-bundle-generator v9.5.1
+
+export declare function a(): string;
+export declare function b(): string;
+
+export {};
+"
+`;

tests/bundle/bundle.test.ts

@@ -3,6 +3,7 @@ import { distDir, readOutputFile } from "../_utils";
 import { expect, test } from "bun:test";
 import { build } from "esbuild";
 import { resolve } from "path";
+import {TsConfigJson} from "type-fest";
 
 test("Basic config", async () => {
     const tsconfig = resolve(__dirname, "./tsconfig.json");
@@ -21,3 +22,28 @@ test("Basic config", async () => {
     expect(readOutputFile("bundle")).toMatchSnapshot();
     expect(readOutputFile("secondBundle")).toMatchSnapshot();
 });
+
+test.only("Pass tsconfig as object", async () => {
+    const tsconfig: TsConfigJson = {
+        compilerOptions: {
+            emitDeclarationOnly: true,
+            allowImportingTsExtensions: true,
+            "target": "es6",
+            "module": "commonjs",
+            "lib": ["dom", "es6", "es2017", "esnext.asynciterable"],
+        }
+    }
+
+    await build({
+        plugins: [dtsPlugin({ tsconfig, experimentalBundling: true })],
+        entryPoints: [
+            resolve(__dirname, "./inputs/bundle.ts"),
+            resolve(__dirname, "./inputs/secondBundle.ts"),
+        ],
+        outdir: distDir,
+        tsconfigRaw: tsconfig,
+        bundle: true,
+    });
+
+    expect(readOutputFile("bundle")).toMatchSnapshot();
+});