fix: correctly link types in package.json exports field (#1395)

* fix: correctly link types in `package.json` `exports` field

* test: add typings tests for node16 module resolution

* test: allow to use per-version tsconfig files

* chore: add logs to typings tests ts version

* chore: use "ts-node" in typings tests

Co-authored-by: Artem Zakharchenko <kettanaito@gmail.com>

package.json

@@ -9,9 +9,11 @@
       "default": "./lib/index.js"
     },
     "./native": {
+      "types": "./lib/native/index.d.ts",
       "default": "./lib/native/index.js"
     },
     "./node": {
+      "types": "./lib/node/index.d.ts",
       "require": "./lib/node/index.js",
       "default": "./lib/node/index.mjs"
     }
@@ -31,7 +33,7 @@
     "test:unit": "cross-env BABEL_ENV=test jest --maxWorkers=3",
     "test:integration": "jest --config=./test/jest.config.js --maxWorkers=1",
     "test:smoke": "./config/scripts/smoke.sh",
-    "test:ts": "yarn tsc -p ./test/typings/tsconfig.json",
+    "test:ts": "ts-node test/typings/run.ts",
     "prepare": "yarn simple-git-hooks init",
     "prepack": "yarn build",
     "release": "release publish",

test/typings/index.test-d.cts

@@ -0,0 +1,3 @@
+export * from 'msw'
+export { setupServer } from 'msw/node'
+export { setupServer as setupNativeServer } from 'msw/native'

test/typings/index.test-d.mts

@@ -0,0 +1,3 @@
+export * from 'msw'
+export { setupServer } from 'msw/node'
+export { setupServer as setupNativeServer } from 'msw/native'

test/typings/run.ts

@@ -0,0 +1,31 @@
+import * as fs from 'fs'
+import * as path from 'path'
+import { spawnSync } from 'child_process'
+import { invariant } from 'outvariant'
+import tsPackageJson from 'typescript/package.json'
+
+const tsInstalledVersion = tsPackageJson.version
+invariant(
+  tsInstalledVersion,
+  'Failed to run typings tests: unable to determine TypeScript version',
+)
+
+const tsVersionMajorMinor = tsInstalledVersion.substring(
+  0,
+  tsInstalledVersion.lastIndexOf('.'),
+)
+
+const tsConfigPaths = [
+  path.resolve(__dirname, `tsconfig.${tsVersionMajorMinor}.json`),
+  path.resolve(__dirname, 'tsconfig.json'),
+]
+const tsConfigPath = tsConfigPaths.find((path) => fs.existsSync(path)) as string
+
+console.log('Using tsconfig at "%s"', tsConfigPath)
+
+const { status } = spawnSync('tsc', ['-p', tsConfigPath], {
+  cwd: path.resolve(__dirname, '../..'),
+  stdio: 'inherit',
+})
+
+process.exit(status || 0)

test/typings/tsconfig.4.7.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "moduleResolution": "Node16"
+  }
+}

test/typings/tsconfig.4.8.json

@@ -0,0 +1,3 @@
+{
+  "extends": "./tsconfig.4.7.json"
+}

test/typings/tsconfig.json

@@ -1,18 +1,21 @@
 {
   "compilerOptions": {
     "strict": true,
+    "target": "esnext",
+    "module": "commonjs",
     "noEmit": true,
     "esModuleInterop": true,
     "resolveJsonModule": true,
     "moduleResolution": "Node",
+    "types": ["node"],
+    "typeRoots": ["../../node_modules/@types"],
     "lib": ["dom"],
     "baseUrl": ".",
-    "typeRoots": ["node_modules/@types"],
     "paths": {
-      "msw": ["../../"],
+      "msw": ["../.."],
       "msw/*": ["../../*"]
     }
   },
-  "include": ["../../global.d.ts", "**/*.test-d.ts"],
+  "include": ["../../global.d.ts", "**/*.test-d.*"],
   "exclude": ["node_modules"]
 }