fix(esm): added export mapping to package.json for proper cjs/esm entrypoints

resources/build-npm.ts

@@ -71,7 +71,7 @@ function buildPackage(outDir: string, isESMOnly: boolean): void {
  const versionTag = splittedTag[2] ?? splittedTag[0];
  assert(
  ['alpha', 'beta', 'rc'].includes(versionTag) ||
-  versionTag.startsWith('experimental-'),
+ versionTag.startsWith('experimental-'),
  `"${versionTag}" tag is not supported.`,
  );
  assert.equal(
@@ -105,8 +105,201 @@ function buildPackage(outDir: string, isESMOnly: boolean): void {
  packageJSON.version += '+esm';
  } else {
  delete packageJSON.type;
- packageJSON.main = 'index';
+ packageJSON.main = 'index.js';
  packageJSON.module = 'index.mjs';
+ packageJSON.types = 'index.d.ts';
+ packageJSON.exports = {
+ '.': {
+ import: {
+ types: './index.d.ts',
+ default: './index.mjs'
+ },
+ require: {
+ types: './index.d.ts',
+ default: './index.js'
+ }
+ },
+ './graphql': {
+ import: {
+ types: './graphql.d.ts',
+ default: './graphql.mjs'
+ },
+ require: {
+ types: './graphql.d.ts',
+ default: './graphql.js'
+ }
+ },
+ './version': {
+ import: {
+ types: './version.d.ts',
+ default: './version.mjs'
+ },
+ require: {
+ types: './version.d.ts',
+ default: './version.js'
+ }
+ },
+ './error': {
+ import: {
+ types: './error/index.d.ts',
+ default: './error/index.mjs'
+ },
+ require: {
+ types: './error/index.d.ts',
+ default: './error/index.js'
+ }
+ },
+ './error/*': {
+ import: {
+ types: './error/*.d.ts',
+ default: './error/*.mjs'
+ },
+ require: {
+ types: './error/*.d.ts',
+ default: './error/*.js'
+ }
+ },
+ './execution': {
+ import: {
+ types: './execution/index.d.ts',
+ default: './execution/index.mjs'
+ },
+ require: {
+ types: './execution/index.d.ts',
+ default: './execution/index.js'
+ }
+ },
+ './execution/*': {
+ import: {
+ types: './execution/*.d.ts',
+ default: './execution/*.mjs'
+ },
+ require: {
+ types: './execution/*.d.ts',
+ default: './execution/*.js'
+ }
+ },
+ './jsutils': {
+ import: {
+ types: './jsutils/index.d.ts',
+ default: './jsutils/index.mjs'
+ },
+ require: {
+ types: './jsutils/index.d.ts',
+ default: './jsutils/index.js'
+ }
+ },
+ './jsutils/*': {
+ import: {
+ types: './jsutils/*.d.ts',
+ default: './jsutils/*.mjs'
+ },
+ require: {
+ types: './jsutils/*.d.ts',
+ default: './jsutils/*.js'
+ }
+ },
+ './language': {
+ import: {
+ types: './language/index.d.ts',
+ default: './language/index.mjs'
+ },
+ require: {
+ types: './language/index.d.ts',
+ default: './language/index.js'
+ }
+ },
+ './language/*': {
+ import: {
+ types: './language/*.d.ts',
+ default: './language/*.mjs'
+ },
+ require: {
+ types: './language/*.d.ts',
+ default: './language/*.js'
+ }
+ },
+ './subscription': {
+ import: {
+ types: './subscription/index.d.ts',
+ default: './subscription/index.mjs'
+ },
+ require: {
+ types: './subscription/index.d.ts',
+ default: './subscription/index.js'
+ }
+ },
+ './subscription/*': {
+ import: {
+ types: './subscription/*.d.ts',
+ default: './subscription/*.mjs'
+ },
+ require: {
+ types: './subscription/*.d.ts',
+ default: './subscription/*.js'
+ }
+ },
+ './type': {
+ import: {
+ types: './type/index.d.ts',
+ default: './type/index.mjs'
+ },
+ require: {
+ types: './type/index.d.ts',
+ default: './type/index.js'
+ }
+ },
+ './type/*': {
+ import: {
+ types: './type/*.d.ts',
+ default: './type/*.mjs'
+ },
+ require: {
+ types: './type/*.d.ts',
+ default: './type/*.js'
+ }
+ },
+ './utilities': {
+ import: {
+ types: './utilities/index.d.ts',
+ default: './utilities/index.mjs'
+ },
+ require: {
+ types: './utilities/index.d.ts',
+ default: './utilities/index.js'
+ }
+ },
+ './utilities/*': {
+ import: {
+ types: './utilities/*.d.ts',
+ default: './utilities/*.mjs'
+ },
+ require: {
+ types: './utilities/*.d.ts',
+ default: './utilities/*.js'
+ }
+ },
+ './validation': {
+ import: {
+ types: './validation/index.d.ts',
+ default: './validation/index.mjs'
+ },
+ require: {
+ types: './validation/index.d.ts',
+ default: './validation/index.js'
+ }
+ },
+ './validation/*': {
+ import: {
+ types: './validation/*.d.ts',
+ default: './validation/*.mjs'
+ },
+ require: {
+ types: './validation/*.d.ts',
+ default: './validation/*.js'
+ }
+ }
+ }
  emitTSFiles({ outDir, module: 'commonjs', extension: '.js' });
  emitTSFiles({ outDir, module: 'es2020', extension: '.mjs' });
  }

resources/utils.ts

@@ -218,14 +218,25 @@ export function writeGeneratedFile(filepath: string, body: string): void {
  fs.writeFileSync(filepath, formatted);
 }
 
+interface PackageJsonExportMapping {
+ import: {
+ types: string;
+ default: string;
+ };
+ require: {
+ types: string;
+ default: string;
+ }
+}
+
 interface PackageJSON {
  description: string;
  version: string;
  private?: boolean;
  repository?: { url?: string };
  scripts?: { [name: string]: string };
  type?: string;
- exports: { [path: string]: string };
+ exports: { [path: string]: string | PackageJsonExportMapping };
  types?: string;
  typesVersions: { [ranges: string]: { [path: string]: Array<string> } };
  devDependencies?: { [name: string]: string };