Add regression test for 1328 (#1341)

Author: jakebailey

testdata/baselines/reference/compiler/subpathImportDeclarationEmit.js

@@ -0,0 +1,55 @@
+//// [tests/cases/compiler/subpathImportDeclarationEmit.ts] ////
+
+//// [package.json]
+{
+  "name": "pkg",
+  "type": "module",
+  "imports": {
+    "#subpath": "./src/subpath.ts"
+  },
+  "exports": {
+    "./*": "./dist/*"
+  }
+}
+
+//// [subpath.ts]
+async function bar(): Promise<string> {
+  return "bar";
+}
+export const barrel = { bar };
+
+//// [indirect.ts]
+import { barrel } from "#subpath";
+const { bar } = barrel;
+export { bar };
+
+//// [main.ts]
+import { bar } from "./indirect.js";
+console.log(await bar());
+
+
+//// [subpath.js]
+async function bar() {
+    return "bar";
+}
+export const barrel = { bar };
+//// [indirect.js]
+import { barrel } from "#subpath";
+const { bar } = barrel;
+export { bar };
+//// [main.js]
+import { bar } from "./indirect.js";
+console.log(await bar());
+
+
+//// [subpath.d.ts]
+declare function bar(): Promise<string>;
+export declare const barrel: {
+    bar: typeof bar;
+};
+export {};
+//// [indirect.d.ts]
+declare const bar: () => Promise<string>;
+export { bar };
+//// [main.d.ts]
+export {};

testdata/baselines/reference/compiler/subpathImportDeclarationEmit.symbols

@@ -0,0 +1,34 @@
+//// [tests/cases/compiler/subpathImportDeclarationEmit.ts] ////
+
+=== /src/main.ts ===
+import { bar } from "./indirect.js";
+>bar : Symbol(bar, Decl(main.ts, 0, 8))
+
+console.log(await bar());
+>console.log : Symbol(log, Decl(lib.dom.d.ts, --, --))
+>console : Symbol(console, Decl(lib.dom.d.ts, --, --))
+>log : Symbol(log, Decl(lib.dom.d.ts, --, --))
+>bar : Symbol(bar, Decl(main.ts, 0, 8))
+
+=== /src/subpath.ts ===
+async function bar(): Promise<string> {
+>bar : Symbol(bar, Decl(subpath.ts, 0, 0))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  return "bar";
+}
+export const barrel = { bar };
+>barrel : Symbol(barrel, Decl(subpath.ts, 3, 12))
+>bar : Symbol(bar, Decl(subpath.ts, 3, 23))
+
+=== /src/indirect.ts ===
+import { barrel } from "#subpath";
+>barrel : Symbol(barrel, Decl(indirect.ts, 0, 8))
+
+const { bar } = barrel;
+>bar : Symbol(bar, Decl(indirect.ts, 1, 7))
+>barrel : Symbol(barrel, Decl(indirect.ts, 0, 8))
+
+export { bar };
+>bar : Symbol(bar, Decl(indirect.ts, 2, 8))
+

testdata/baselines/reference/compiler/subpathImportDeclarationEmit.types

@@ -0,0 +1,38 @@
+//// [tests/cases/compiler/subpathImportDeclarationEmit.ts] ////
+
+=== /src/main.ts ===
+import { bar } from "./indirect.js";
+>bar : () => Promise<string>
+
+console.log(await bar());
+>console.log(await bar()) : void
+>console.log : (...data: any[]) => void
+>console : Console
+>log : (...data: any[]) => void
+>await bar() : string
+>bar() : Promise<string>
+>bar : () => Promise<string>
+
+=== /src/subpath.ts ===
+async function bar(): Promise<string> {
+>bar : () => Promise<string>
+
+  return "bar";
+>"bar" : "bar"
+}
+export const barrel = { bar };
+>barrel : { bar: () => Promise<string>; }
+>{ bar } : { bar: () => Promise<string>; }
+>bar : () => Promise<string>
+
+=== /src/indirect.ts ===
+import { barrel } from "#subpath";
+>barrel : { bar: () => Promise<string>; }
+
+const { bar } = barrel;
+>bar : () => Promise<string>
+>barrel : { bar: () => Promise<string>; }
+
+export { bar };
+>bar : () => Promise<string>
+

testdata/tests/cases/compiler/subpathImportDeclarationEmit.ts

@@ -0,0 +1,37 @@
+// @Filename: /tsconfig.json
+{
+  "compilerOptions": {
+    "module": "nodenext",
+    "outDir": "dist",
+    "rootDir": "src",
+    "declaration": true,
+  },
+  "files": ["src/main.ts"]
+}
+
+// @Filename: /package.json
+{
+  "name": "pkg",
+  "type": "module",
+  "imports": {
+    "#subpath": "./src/subpath.ts"
+  },
+  "exports": {
+    "./*": "./dist/*"
+  }
+}
+
+// @Filename: /src/subpath.ts
+async function bar(): Promise<string> {
+  return "bar";
+}
+export const barrel = { bar };
+
+// @Filename: /src/indirect.ts
+import { barrel } from "#subpath";
+const { bar } = barrel;
+export { bar };
+
+// @Filename: /src/main.ts
+import { bar } from "./indirect.js";
+console.log(await bar());