Update types

release/core/publish/steps/generate-tarballs.ts

@@ -303,8 +303,34 @@ async function convertTypesToModules(pkg: Package, subdir: 'unstable-preview-typ
   }
 }
 
+function exposeTypes(pkg: Package, subdir: 'unstable-preview-types' | 'preview-types' | 'types') {
+  if (pkg.pkgData.exports) {
+    /**
+     * Allows tsconfig.json#compilerOptions#types to use import paths,
+     * rather than file paths (there are no file path guarantees for any given package manager)
+     */
+    pkg.pkgData.exports[`./${subdir}`] = {
+      /**
+       * No default, import, or require here, because there are no actual modules to import.
+       */
+      types: `./${subdir}/index.d.ts`,
+    };
+
+    /**
+     * For older tsconfig.json settings
+     */
+    pkg.pkgData.typesVersions = {
+      // very loose TS version
+      '*': {
+        [subdir]: [`./${subdir}`],
+      },
+    };
+  }
+}
+
 async function makeTypesAlpha(pkg: Package) {
   scrubTypesFromExports(pkg);
+  exposeTypes(pkg, 'unstable-preview-types');
 
   // enforce that the correct types directory is present
   const present = new Set(pkg.pkgData.files);
@@ -331,6 +357,7 @@ async function makeTypesAlpha(pkg: Package) {
 
 async function makeTypesBeta(pkg: Package) {
   scrubTypesFromExports(pkg);
+  exposeTypes(pkg, 'preview-types');
 
   // enforce that the correct types directory is present
   const present = new Set(pkg.pkgData.files);

release/utils/package.ts

@@ -59,6 +59,7 @@ export type PACKAGEJSON = {
   scripts?: Record<string, string>;
   files?: string[];
   exports?: ExportConfig;
+  typesVersions?: { [tsVersion: string]: { [relativeImportPath: string]: string[] } };
   'ember-addon'?: {
     main?: 'addon-main.js';
     type?: 'addon';