feat:mvp1 initial commit

jest.base.config.ts

@@ -0,0 +1,35 @@
+import type { Config as JestConfig } from 'jest';
+import { pathsToModuleNameMapper } from 'ts-jest';
+import { compilerOptions as tsConfigCompilerOptions } from './tsconfig.json';
+
+type ArrayElement<A> = A extends readonly (infer T)[] ? T : never;
+type JestProjectConfig = Exclude<ArrayElement<JestConfig['projects']>, string>;
+
+const baseJestConfig: JestConfig = {
+  // ...
+};
+const baseJestProjectConfig: JestProjectConfig = {
+  testEnvironment: 'node',
+  transform: {
+    '^.+\\.(t|j)s$': 'ts-jest',
+  },
+  moduleNameMapper: pathsToModuleNameMapper(tsConfigCompilerOptions.paths, { prefix: '<rootDir>' }),
+  globalSetup: '<rootDir>/test/global-setup.ts',
+};
+const projects: { name?: string; rootDir: string }[] = [{ rootDir: '.' }];
+
+export function buildJestConfig(config?: {
+  jestConfigs?: JestConfig;
+  jestProjectConfigs?: JestProjectConfig;
+}): JestConfig {
+  return {
+    ...baseJestConfig,
+    ...config?.jestConfigs,
+    projects: projects.map(({ name, rootDir }) => ({
+      ...baseJestProjectConfig,
+      ...config?.jestProjectConfigs,
+      ...(name && { displayName: name }),
+      rootDir,
+    })),
+  };
+}