Start testing TypeScript output on CI

Cargo.toml

@@ -53,9 +53,10 @@ wasm-bindgen-test-crate-b = { path = 'tests/crates/b', version = '0.1' }
 members = [
   "crates/cli",
   "crates/js-sys",
+  "crates/macro/ui-tests",
   "crates/test",
   "crates/test/sample",
-  "crates/macro/ui-tests",
+  "crates/typescript-tests",
   "crates/web-sys",
   "crates/webidl",
   "crates/webidl-tests",
@@ -64,8 +65,8 @@ members = [
   "examples/char",
   "examples/closures",
   "examples/console_log",
-  "examples/duck-typed-interfaces",
   "examples/dom",
+  "examples/duck-typed-interfaces",
   "examples/fetch",
   "examples/guide-supported-types-examples",
   "examples/hello_world",

azure-pipelines.yml

@@ -119,6 +119,14 @@ jobs:
           echo "##vso[task.setvariable variable=PATH;]$PATH:$PWD"
       - script: cargo test -p wasm-bindgen-wasm-interpreter
 
+  - job: test_typescript_output
+    displayName: "Test TypeScript output of wasm-bindgen"
+    steps:
+      - template: ci/azure-install-rust.yml
+      - template: ci/azure-install-sccache.yml
+      - template: ci/azure-install-node.yml
+      - script: cd crates/typescript-tests && ./run.sh
+
   - job: build_examples
     displayName: "Build almost all examples"
     steps:

crates/typescript-tests/.gitignore

@@ -0,0 +1,2 @@
+pkg
+dist

crates/typescript-tests/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "typescript-tests"
+version = "0.1.0"
+authors = ["The wasm-bindgen Developers"]
+edition = "2018"
+
+[dependencies]
+wasm-bindgen = { path = '../..' }
+
+[lib]
+crate-type = ['cdylib']

crates/typescript-tests/index.ts

@@ -0,0 +1,11 @@
+import * as wbg from './pkg/typescript_tests';
+import * as wasm from './pkg/typescript_tests_bg';
+
+const a1: (a: string) => void = wbg.greet;
+const a2: (a: number, b: number) => void = wasm.greet;
+const a3: WebAssembly.Memory = wasm.memory;
+
+const c = new wbg.A();
+wbg.A.other();
+c.foo();
+c.free();

crates/typescript-tests/package.json

@@ -0,0 +1,9 @@
+{
+  "scripts": {
+    "tsc": "tsc"
+  },
+  "devDependencies": {
+    "@types/webassembly-js-api": "0.0.2",
+    "typescript": "^3.3.3333"
+  }
+}

crates/typescript-tests/run.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -ex
+
+cargo build --target wasm32-unknown-unknown
+
+rm -rf pkg
+mkdir pkg
+cargo run -p wasm-bindgen-cli --bin wasm-bindgen -- \
+  ../../target/wasm32-unknown-unknown/debug/typescript_tests.wasm \
+  --out-dir pkg \
+  --typescript
+
+if [ ! -d node_modules ]; then
+  npm install
+fi
+
+npm run tsc

crates/typescript-tests/src/lib.rs

@@ -0,0 +1,20 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn greet(_: &str) {}
+
+#[wasm_bindgen]
+struct A {
+}
+
+#[wasm_bindgen]
+impl A {
+    #[wasm_bindgen(constructor)]
+    pub fn new() -> A {
+        A {}
+    }
+
+    pub fn other() {}
+
+    pub fn foo(&self) {}
+}

crates/typescript-tests/tsconfig.json

@@ -0,0 +1,14 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "esModuleInterop": true,
+        "target": "es6",
+        "noImplicitAny": true,
+        "sourceMap": true,
+        "outDir": "dist",
+        "baseUrl": "."
+    },
+    "include": [
+        "index.ts"
+    ]
+}