Share example code to repro microsoft/TypeScript#8113

To repro:

1. git clean -xdf
2. cd ext && npm install
3. cd ../A && npm install
4. cd ../B && npm install

Note, TSC is set as npm prepublish, which runs it automatically after npm install.

.gitignore

@@ -0,0 +1,5 @@
+/**/node_modules/
+/**/*.d.ts
+/**/*.js
+/**/npm-debug.log
+

A/.npmignore

@@ -0,0 +1,13 @@
+# ship a minimal package, of runnable JS files
+# and d.ts type definitions
+
+# exclude the original .ts files
+/**/*.ts
+
+# re-include the d.ts files
+!/**/*.d.ts
+
+# exclude design-time metadata
+/.npmignore
+/tsconfig.json
+

A/A.ts

@@ -0,0 +1,7 @@
+import ext from 'ext';
+
+// module augmentation block for 'ext'
+declare module 'ext' {
+}
+
+export default {};

A/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "a",
+  "version": "0.1.0",
+  "private": true,
+  "main": "A",
+  "typings": "A",
+  "devDependencies": {
+    "typescript": "^1.8.10"
+  },
+  "scripts": {
+    "prepublish": "tsc"
+  },
+  "dependencies": {
+    "ext": "file:../ext"
+  }
+}

A/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noImplicitAny": true,
+    "target": "es5",
+    "declaration": true
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}

B/.npmignore

@@ -0,0 +1,12 @@
+# ship a minimal package, of runnable JS files
+# and d.ts type definitions
+
+# exclude the original .ts files
+/**/*.ts
+
+# re-include the d.ts files
+!/**/*.d.ts
+
+# exclude design-time metadata
+/.npmignore
+/tsconfig.json

B/B.ts

@@ -0,0 +1,3 @@
+// Uncomment the below line to demo the workaround
+// import ext from 'ext';
+import modA from 'a';

B/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "b",
+  "version": "0.1.0",
+  "private": true,
+  "main": "B",
+  "typings": "B",
+  "devDependencies": {
+    "typescript": "^1.8.10"
+  },
+  "scripts": {
+    "prepublish": "tsc"
+  },
+  "dependencies": {
+    "a": "file:../A",
+    "ext": "file:../ext"
+  }
+}

B/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noImplicitAny": true,
+    "target": "es5",
+    "declaration": true
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}

ext/.npmignore

@@ -0,0 +1,12 @@
+# ship a minimal package, of runnable JS files
+# and d.ts type definitions
+
+# exclude the original .ts files
+/**/*.ts
+
+# re-include the d.ts files
+!/**/*.d.ts
+
+# exclude design-time metadata
+/.npmignore
+/tsconfig.json

ext/ext.ts

@@ -0,0 +1 @@
+export default {};

ext/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "ext",
+  "version": "0.1.0",
+  "private": true,
+  "main": "ext",
+  "typings": "ext",
+  "devDependencies": {
+    "typescript": "^1.8.10"
+  },
+  "scripts": {
+    "prepublish": "tsc"
+  }
+}

ext/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noImplicitAny": true,
+    "target": "es5",
+    "declaration": true
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}