fix: use compiler options from tsconfig.json schema, not ts module

src/clean-addon/index.ts

@@ -1,4 +1,5 @@
-import { EmitOptions, CompilerOptions } from '../interfaces'
+import { CompilerOptions } from 'typescript'
+import { EmitOptions } from '../interfaces'
 import { ensureAbsolutePath, relativePath, normalizePath, parentPaths } from '../path.utils'
 import rmrf from './rmrf'
 

src/index.test.ts

@@ -1,6 +1,5 @@
 import { existsSync } from 'fs'
-import { join, normalize } from 'path'
-import ts from 'typescript'
+import { join } from 'path'
 import { createProgramFromConfig, build } from '.'
 
 jest.mock('./clean-addon/rmrf')
@@ -9,6 +8,8 @@ const basePath = join(__dirname, '__fixtures__')
 const configFilePath = 'tsconfig.fixture.json'
 
 test('Create program by overriding config file', async () => {
+	const consoleWarnSpy = spyOn(console, 'warn')
+
 	const program = createProgramFromConfig({
 		basePath,
 		configFilePath,
@@ -24,10 +25,12 @@ test('Create program by overriding config file', async () => {
 	expect(program.getCompilerOptions()).toMatchObject({
 		strict: true,
 		// `compilerOptions` properties returns unix separators in windows paths
-		rootDir: normalize(join(basePath, 'src')),
-		declaration: 'true',
+		rootDir: join(basePath, 'src').replace(/\\/g, '/'),
+		declaration: undefined,
 	})
 
+	expect(consoleWarnSpy).toHaveBeenCalledWith(expect.stringContaining("'declaration' requires a value of type boolean"))
+
 	expect(program.getRootFileNames()).toHaveLength(1)
 })
 
@@ -39,9 +42,10 @@ test('Build without errors with config from scratch', async () => {
 		// configFilePath,
 		clean: { outDir: true },
 		compilerOptions: {
-			module: ts.ModuleKind.ES2015,
-			moduleResolution: ts.ModuleResolutionKind.NodeJs,
-			target: ts.ScriptTarget.ES5,
+			module: 'es2015',
+			moduleResolution: 'node',
+			target: 'es2019',
+			lib: ['es2019'],
 			rootDir: 'src',
 			outDir: 'dist',
 			declaration: false,

src/index.ts

@@ -38,7 +38,7 @@ export function createProgramFromConfig({
 		config = readResult.config
 	}
 
-	// config.compilerOptions = Object.assign({}, config.compilerOptions, compilerOptions)
+	config.compilerOptions = Object.assign({}, config.compilerOptions, compilerOptions)
 	if (include) config.include = include
 	if (exclude) config.exclude = exclude
 	if (files) config.files = files
@@ -49,14 +49,12 @@ export function createProgramFromConfig({
 		config,
 		ts.sys,
 		basePath,
-		compilerOptions,
+		undefined,
 		configFilePath
 	)
 
 	logDiagnostics(errors, true)
 
-	normalizeOptionValues(options, basePath)
-
 	const program = ts.createProgram({
 		options,
 		rootNames: fileNames,
@@ -108,29 +106,3 @@ function logDiagnostics(diagnostics: ts.Diagnostic[], better = false) {
 
 	console.warn(message)
 }
-
-/**
- * @see https://github.com/microsoft/TypeScript/blob/v3.5.3/src/compiler/commandLineParser.ts#L2528
- * @internal
- */
-function normalizeOptionValues(options: ts.CompilerOptions, basePath: string) {
-	// https://github.com/microsoft/TypeScript/blob/v3.5.3/src/compiler/commandLineParser.ts#L76
-	const pathOptions = [
-		'outFile',
-		'outDir',
-		'rootDir',
-		'tsBuildInfoFile',
-		'baseUrl',
-		'rootDirs',
-		'typeRoots',
-		'declarationDir',
-	]
-
-	for (const o of pathOptions) {
-		if (options[o] == null) continue
-
-		options[o] = Array.isArray(options[o])
-			? (options[o] as string[]).map((value) => ensureAbsolutePath(value, basePath))
-			: ensureAbsolutePath(options[o] as string, basePath)
-	}
-}