diff --git a/resources/build-npm.ts b/resources/build-npm.ts
index 4ccd249a76..ef9a7a5dc2 100644
--- a/resources/build-npm.ts
+++ b/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' });
   }
diff --git a/resources/utils.ts b/resources/utils.ts
index 112f3a7072..99febef4f7 100644
--- a/resources/utils.ts
+++ b/resources/utils.ts
@@ -218,6 +218,17 @@ 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;
@@ -225,7 +236,7 @@ interface PackageJSON {
   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 };