feat: allow custom tsconfig

src/utils/get-rollup-configs.ts

@@ -45,7 +45,7 @@
 	) => {
 		const [dts, ts] = await Promise.all([
 			import('rollup-plugin-dts'),
 			import('typescript'),
 		]);
 		return {
 			input: [] as string[],
@@ -59,6 +59,7 @@
 				),
 				resolveTypescriptMjsCts(),
 				dts.default({
+					tsconfig: tsconfig?.path,
 					respectExternal: true,
 
 					/**
@@ -80,7 +81,7 @@
 						module: ts.default.ModuleKind.Preserve,
 						moduleResolution: ts.default.ModuleResolutionKind.Bundler,
 					},
 					tsconfig: tsconfig?.path,
 				}) as Plugin,
 			],
 			output: [] as unknown as Output,
@@ -169,7 +170,7 @@
 	aliases: AliasMap,
 	packageJson: PackageJson,
 	tsconfig: TsConfigResult | null,
 ) => {
 	const executablePaths = inputs
 		.filter(({ exportEntry }) => exportEntry.isExecutable)
 		.map(({ exportEntry }) => exportEntry.outputPath);

tests/specs/builds/typescript.ts

@@ -215,5 +215,47 @@ export default testSuite(({ describe }, nodePath: string) => {
 			expect(pkgrollProcess.exitCode).toBe(1);
 			// expect(pkgrollProcess.stderr).toMatch('Cannot resolve tsconfig at path:');
 		});
+
+		test('should pass custom tsconfig.json to dts module', async () => {
+			const fixture = await createFixture({
+				...installTypeScript,
+				src: {
+					'index.tsx': 'export default () => (<div>hi</div>);',
+				},
+				'package.json': createPackageJson({
+					main: './dist/index.js',
+					dependencies: {
+						working: '*',
+					},
+				}),
+				'tsconfig.json': createTsconfigJson({
+					compilerOptions: {
+						jsx: 'react-jsx',
+						jsxImportSource: 'breaking',
+					},
+				}),
+				'tsconfig.build.json': createTsconfigJson({
+					compilerOptions: {
+						jsx: 'react-jsx',
+						jsxImportSource: 'working',
+					},
+				}),
+			});
+
+			const pkgrollProcess = await pkgroll([
+				'--env.NODE_ENV=test',
+				'--tsconfig=tsconfig.build.json',
+			], {
+				cwd: fixture.path,
+				nodePath,
+				reject: false,
+			});
+
+			expect(pkgrollProcess.exitCode).toBe(0);
+			expect(pkgrollProcess.stderr).toBe('');
+
+			const code = await fixture.readFile('dist/index.js', 'utf8');
+			expect(code).toMatch('working');
+		});
 	});
 });