92 lines
2.5 KiB
TypeScript
92 lines
2.5 KiB
TypeScript
import { dirname, extname, join } from 'path';
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import { resolve as resolveExports } from 'resolve.exports';
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import type defaultResolver from 'jest-resolve/build/defaultResolver';
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interface ResolveOptions {
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rootDir: string;
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basedir: string;
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paths: string[];
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moduleDirectory: string[];
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browser: boolean;
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extensions: string[];
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defaultResolver: typeof defaultResolver;
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}
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let compilerSetup;
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let ts;
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function getCompilerSetup(rootDir: string) {
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const tsConfigPath =
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ts.findConfigFile(rootDir, ts.sys.fileExists, 'tsconfig.spec.json') ||
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ts.findConfigFile(rootDir, ts.sys.fileExists, 'tsconfig.test.json') ||
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ts.findConfigFile(rootDir, ts.sys.fileExists, 'tsconfig.jest.json');
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if (!tsConfigPath) {
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console.error(
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`Cannot locate a tsconfig.spec.json. Please create one at ${rootDir}/tsconfig.spec.json`
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);
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}
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const readResult = ts.readConfigFile(tsConfigPath, ts.sys.readFile);
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const config = ts.parseJsonConfigFileContent(
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readResult.config,
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ts.sys,
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dirname(tsConfigPath)
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);
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const compilerOptions = config.options;
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const host = ts.createCompilerHost(compilerOptions, true);
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return { compilerOptions, host };
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}
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module.exports = function (path: string, options: ResolveOptions) {
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const ext = extname(path);
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if (
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ext === '.css' ||
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ext === '.scss' ||
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ext === '.sass' ||
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ext === '.less' ||
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ext === '.styl'
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) {
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return require.resolve('identity-obj-proxy');
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}
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try {
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try {
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// Try to use the defaultResolver with default options
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return options.defaultResolver(path, options);
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} catch {
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// Try to use the defaultResolver with a packageFilter
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return options.defaultResolver(path, {
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...options,
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packageFilter: (pkg) => ({
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...pkg,
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main: pkg.main || pkg.es2015 || pkg.module,
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}),
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pathFilter: (pkg) => {
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if (!pkg.exports) {
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return path;
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}
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return resolveExports(pkg, path) || path;
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},
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});
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}
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} catch (e) {
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if (
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path === 'jest-sequencer-@jest/test-sequencer' ||
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path === '@jest/test-sequencer'
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) {
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return;
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}
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// Fallback to using typescript
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ts = ts || require('typescript');
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compilerSetup = compilerSetup || getCompilerSetup(options.rootDir);
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const { compilerOptions, host } = compilerSetup;
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return ts.resolveModuleName(
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path,
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join(options.basedir, 'fake-placeholder.ts'),
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compilerOptions,
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host
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).resolvedModule.resolvedFileName;
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}
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};
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